MARSHALL & ILSLEY CORP/WI/
10-Q, 1998-05-15
NATIONAL COMMERCIAL BANKS
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<PAGE>
                            FORM 10-Q

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

          (Mark One)

    [X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                     SECURITIES EXCHANGE ACT OF 1934

               For the quarterly period ended March 31, 1998
               ---------------------------------------------
                                       OR

         [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

           For the transition period from __________ to __________

                        Commission file number  0-1220
                        ------------------------------

                         MARSHALL & ILSLEY CORPORATION
                         -----------------------------
             (Exact name of registrant as specified in its charter)

              Wisconsin                                   39-0968604
              ---------                                   ----------
     (State or other jurisdiction of                  (I.R.S. Employer
     incorporation or organization)                  Identification No.)

         770 North Water Street
          Milwaukee, Wisconsin                                   53202
         ----------------------                                  -----
(Address of principal executive offices)                      (Zip Code)

                                (414) 765 - 7801
                                ----------------
              (Registrant's telephone number, including area code)

                                      None
                                      ----
             (Former name, former address and former fiscal year,
                         if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period
that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days.

                     Yes   [X]                    No   [ ]

Indicate the number of shares outstanding of each of the issuer's
classes of common stock, as of the latest practicable date.

                                                        Outstanding at
            Class                                       April 30, 1998
            -----                                      -----------------
Common Stock, $1.00 Par Value                             105,855,245
<PAGE>
<PAGE>
                                 MARSHALL & ILSLEY CORPORATION
                            CONSOLIDATED BALANCE SHEETS (Unaudited)
                                  ($000's except share data)
<TABLE>
<CAPTION>
                                                     March 31,    December 31,   March 31,
Assets                                                  1998          1997          1997
- ------                                          ------------------------------------------
<C>                                            <S>           <S>           <S>
Cash and cash equivalents:
  Cash and due from banks                       $     702,579 $     800,120 $     683,073
  Federal funds sold and
    security resale agreements                         85,301        26,880       108,776
  Money market funds                                   74,845        62,787        56,376
                                                  ------------  ------------  ------------
Total cash and cash equivalents                       862,725       889,787       848,225

Trading securities                                     39,080        43,644        42,076
Other short-term investments                           47,035        37,008        48,139
Investment securities available for sale at
  market value                                      4,088,984     4,038,713     2,977,094
Investment securities held to maturity,
  market value $1,006,107 ($953,316 December 31,
  and $813,497 March 31, 1997)                        983,574       930,090       812,122
                                                  ------------  ------------  ------------
Total investment securities                         5,072,558     4,968,803     3,789,216

Loans and leases                                   12,638,369    12,542,281     9,576,716
  Less: Allowance for loan and lease losses           210,307       202,818       154,599
                                                  ------------  ------------  ------------
Net loans and leases                               12,428,062    12,339,463     9,422,117

Premises and equipment, net                           343,423       338,818       318,092
Accrued interest and other assets                     860,011       859,929       422,351
                                                  ------------  ------------  ------------
Total Assets                                    $  19,652,894 $  19,477,452 $  14,890,216
                                                  ============  ============  ============

Liabilities and Shareholders' Equity
- ------------------------------------
Deposits:
  Noninterest bearing                           $   2,601,390 $   2,722,757 $   2,261,330
  Interest bearing                                 11,651,478    11,633,241     8,574,325
                                                  ------------  ------------  ------------
Total deposits                                     14,252,868    14,355,998    10,835,655
Funds purchased and security
    repurchase agreements                           1,887,393     1,424,359     1,656,974
Other short-term borrowings                           277,899       478,421       401,598
Accrued expenses and other liabilities                479,332       507,427       367,776
Long-term borrowings                                  787,141       791,176       348,042
                                                  ------------  ------------  ------------
Total liabilities                                  17,684,633    17,557,381    13,610,045

Shareholders' equity:
  Series A convertible preferred stock,
    $1.00 par value; 685,314 shares issued                685           685           685
  Common stock, $1.00 par value; 109,302,590
    shares issued (99,494,335 at March 31, 1997)      109,303       109,303        99,494
  Additional paid-in capital                          604,963       608,087       209,855
  Retained earnings                                 1,427,383     1,376,336     1,246,450
  Less: Treasury common stock, at cost;
        7,522,162 shares (7,765,169 December 31,
        and 10,846,046 March 31, 1997)                211,312       215,787       286,186
        Deferred compensation                           7,443         7,132         1,170
  Net unrealized gains on securities
    available for sale, net of related taxes           44,682        48,579        11,043
                                                  ------------  ------------  ------------
Total shareholders' equity                          1,968,261     1,920,071     1,280,171
                                                  ------------  ------------  ------------
Total Liabilities and
  Shareholders' Equity                          $  19,652,894 $  19,477,452 $  14,890,216
                                                  ============  ============  ============

</TABLE>

See notes to financial statements.
<PAGE>
<PAGE>
                         MARSHALL & ILSLEY CORPORATION
                 CONSOLIDATED STATEMENTS OF INCOME (Unaudited)
                        ($000's except per share data)

                                               Three Months Ended March 31,
                                             ------------------------------
Interest income                                    1998            1997
- ---------------                              ------------------------------
  Loans                                      $     253,406   $     194,946
  Investment securities:
    Taxable                                         66,725          50,091
    Exempt from Federal income taxes                12,268          10,008
  Trading securities                                   488             483
  Short-term investments                             2,020           2,395
                                               ------------    ------------
Total interest income                              334,907         257,923

Interest expense
- ----------------
  Deposits                                         134,302          94,309
  Short-term borrowings                             29,896          23,823
  Long-term borrowings                              14,072          10,149
                                               ------------    ------------
Total interest expense                             178,270         128,281
                                               ------------    ------------
Net interest income                                156,637         129,642
Provision for loan and lease losses                  4,705           4,311
                                               ------------    ------------
Net interest income after
  provision for loan and lease losses              151,932         125,331

Other income
- ------------
  Data processing services                          96,838          80,140
  Trust services                                    21,464          18,931
  Other customer services                           36,242          29,557
  Net securities gains                               6,375             803
  Other                                             15,331           8,164
                                               ------------    ------------
Total other income                                 176,250         137,595

Other expense
- -------------
  Salaries and employee benefits                   123,669         105,382
  Net occupancy                                     10,955          10,130
  Equipment                                         24,332          20,864
  Software expenses                                  5,199           4,572
  Payments to regulatory agencies                    1,065             601
  Processing charges                                 5,996           5,770
  Supplies and printing                              4,372           4,115
  Professional services                              4,417           4,126
  Other                                             34,245          25,207
                                               ------------    ------------
Total other expense                                214,250         180,767
                                               ------------    ------------
Income before income taxes                         113,932          82,159
Provision for income taxes                          41,001          27,360
                                               ------------    ------------
Net income                                   $      72,931   $      54,799
                                               ============    ============

Net income per common share
- ---------------------------
  Basic                                      $        0.70   $        0.61
  Diluted                                             0.66            0.56

Dividends paid per common share              $       0.200   $       0.185


Weighted average common shares outstanding:
  Basic                                            101,587          88,691
  Diluted                                          111,121          98,290

See notes to financial statements.
<PAGE>
<PAGE>
                         MARSHALL & ILSLEY CORPORATION
               CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)
                                   ($000's)

                                                Three Months Ended March 31
                                               ----------------------------
                                                   1998            1997
                                               ------------    ------------
Net Cash Provided by Operating Activities    $      89,275   $      57,872

Cash Flows From Investing Activities:
- -------------------------------------
  Net (increase)decrease in securities with
    maturities of three months or less             (10,050)          2,500
  Proceeds from sales of securities 
    available for sale                               6,076          80,207
  Proceeds from maturities of longer
    term securities                                322,951         155,923
  Purchases of longer term securities             (317,593)       (216,703)
  Net increase in loans                           (243,116)       (284,630)
  Purchases of assets to be leased                 (51,039)        (52,542)
  Principal payments on lease receivables           56,730          39,622
  Fixed asset purchases, net                       (19,288)        (14,445)
  Other                                              5,321           2,004
                                               ------------    ------------
    Net cash used in
       investing activities                       (250,008)       (288,064)
                                               ------------    ------------
Cash Flows From Financing Activities:
- -------------------------------------
  Net decrease in deposits                        (103,129)       (116,703)
  Proceeds from issuance of commercial paper       302,922          79,743
  Payments for maturity of commercial paper       (299,210)        (81,036)
  Net increase in other short-term
    borrowings                                     308,007         374,325
  Proceeds from issuance of long-term debt           2,844           8,916
  Payments of long-term debt                       (56,250)       (125,369)
  Dividends paid                                   (21,885)        (17,516)
  Purchases of treasury stock                       (4,577)        (22,190)
  Other                                              4,949          10,323
                                               ------------    ------------
    Net cash provided by financing
       activities                                  133,671         110,493
                                               ------------    ------------
Net decrease in cash and cash equivalents          (27,062)       (119,699)

Cash and cash equivalents, beginning of year       889,787         967,924
                                               ------------    ------------
Cash and cash equivalents, end of period     $     862,725   $     848,225
                                               ============    ============
Supplemental cash flow information:
- -----------------------------------
  Cash paid (received) during the period for:
    Interest                                 $     177,239   $     123,467
    Income taxes                                    (3,430)          8,914

See notes to financial statements.
<PAGE>
<PAGE>
                            MARSHALL & ILSLEY CORPORATION
                            Notes to Financial Statements

                           March 31, 1998 & 1997 (Unaudited)


1.   The accompanying unaudited consolidated financial statements should be
     read in conjunction with Marshall & Ilsley Corporation's ("Corporation")
     1997 Annual Report on Form 10-K.  The unaudited financial information
     included in this report reflects all adjustments (consisting only of
     normal recurring accruals) which are  necessary for a fair statement of
     the financial position and results of operations as of and for the three
     months ended March 31, 1998 and 1997.  The results of operations for the
     three months ended March 31, 1998 and 1997 are not necessarily indicative
     of results to be expected for the entire year. Certain amounts in the
     1997 consolidated financial statements and analyses have been
     reclassified to conform with the 1998 presentation.


2.   The Corporation has 5,000,000 shares of preferred stock authorized, of
     which the Board of Directors has designated 2,000,000 shares as Series A
     convertible, with a $100 value per share for conversion and liquidation
     purposes.

     The Corporation has 160,000,000 shares of its $1.00 par value common
     stock authorized.


3.   A reconciliation of the numerators and denominators of the basic and
     diluted per share computations are as follows (dollars and shares in
     thousands, except per share data):
                                                 Period Ending March 31, 1998
                                              ---------------------------------
                                                                          Per
                                                 Income    Average Share  Share
                                               (Numerator) (Denominator) Amount
                                              ---------------------------------
Net Income                                    $  72,931
Convertible Preferred Dividends                  (1,535)
                                               ---------
Basic Earnings Per Share
     Income Available to Common Shareholders  $  71,396      101,587    $ 0.70

Effect of Dilutive Securtities
    Convertible Preferred Stock                   1,535        7,677
    Stock Option and Restricted Stock Plans         --         1,857
                                               --------- -----------
Diluted Earnings Per Share
    Income Available to Common Shareholders
        Plus Assumed Conversions              $  72,931      111,121    $ 0.66



                                                 Period Ending March 31, 1997
                                              ---------------------------------
                                                                          Per
                                                 Income    Average Share  Share
                                               (Numerator) (Denominator) Amount
                                              ---------------------------------
Net Income                                    $  54,799
Convertible Preferred Dividends                  (1,065)
                                               ---------
Basic Earnings Per Share
     Income Available to Common Shareholders  $  53,734       88,691    $ 0.61

Effect of Dilutive Securtities
    Convertible Preferred Stock                   1,065        5,776
    8.5% Convertible Debt                           232        1,901
    Stock Options, Restricted Stock and
       Performance Plans                             --        1,709
    Forward Repurchase Contract                      --          213
                                               --------- -----------
Diluted Earnings Per Share
    Income Available to Common Shareholders
        Plus Assumed Conversions              $  55,031       98,290    $ 0.56
<PAGE>
<PAGE>
                           MARSHALL & ILSLEY CORPORATION
                       Notes to Financial Statements - Continued

                          March 31, 1998 & 1997 (Unaudited)


4.   Investment securities, by type, held by the Corporation are as follows
     ($000's):
                                         March 31,   December 31,  March 31,
                                            1998         1997         1997
                                       ---------------------------------------
   Investment securities available for sale:
      U.S. treasury and
        government agencies            $  3,814,382 $  3,786,390 $  2,830,401
      State and political subdivisions          224          487          717
      Other                                 274,378      251,836      145,976
                                       ---------------------------------------
   Investment securities
      available for sale                  4,088,984    4,038,713    2,977,094

   Investment securities held to maturity:
      State and political subdivisions      979,153      925,644      808,072
      Other                                   4,421        4,446        4,050
                                       ---------------------------------------
   Investment securities
      held to maturity                      983,574      930,090      812,122
                                       ---------------------------------------
    Total investment securities        $  5,072,558 $  4,968,803 $  3,789,216
                                       =======================================

5.   The Corporation's loan portfolio consists of the following ($000's):

                                          March 31,   December 31,  March 31,
                                             1998         1997         1997
                                        ---------------------------------------
   Commercial, financial & agricultural $  3,569,977 $  3,375,519 $  3,056,559 
   Real estate:
      Construction                           395,806      402,892      315,401
      Residential Mortgage                 3,638,424    3,782,181    2,245,344
      Commercial Mortgage                  3,410,293    3,339,592    2,461,223
                                        ---------------------------------------
   Total real estate                       7,444,523    7,524,665    5,021,968
   Personal                                1,131,607    1,153,003    1,144,859
   Lease financing                           492,262      489,094      353,330
                                        ---------------------------------------
                                        $ 12,638,369 $ 12,542,281 $  9,576,716
                                        =======================================


6.   The Corporation's deposit liabilities consists of the following ($000's):

                                          March 31,   December 31,  March 31,
                                             1998         1997         1997
                                        ---------------------------------------
   Noninterest bearing demand           $  2,601,390 $  2,722,757 $  2,261,330

   Savings and NOW                         5,822,897    5,610,445    4,374,810
   Other time deposits $100 and over       1,468,529    1,390,464    1,188,661
   Other time deposits under $100          4,360,052    4,632,332    3,010,854
                                        ---------------------------------------
                                        $ 14,252,868 $ 14,355,998 $ 10,835,655
                                        =======================================


7.   On March 31, 1997, $16.8 million of the Corporation's 8.5% convertible
     subordinated notes were converted by the holder into 1,922,114 shares of
     the Corporation's common stock.  The common stock acquired by conversion
     of the notes was  exchanged for 168,185 shares of the Corporation's
     Series A convertible preferred stock.  This is a noncash transaction for
     purposes of the Consolidated Statements of Cash Flows.
<PAGE>
<PAGE>
                           MARSHALL & ILSLEY CORPORATION
                       Notes to Financial Statements - Continued

                          March 31, 1998 & 1997 (Unaudited)


8.   Comprehensive Income

     On January 1, 1998, the Corporation adopted Statement of Financial
     Accounting Standards No. 130, "Reporting Comprehensive Income."  This
     statement establishes standards for reporting and display of
     comprehensive income and its components in a complete set of financial
     statements.  Comprehensive income is the total of reported net income and
     all other revenues, expenses, gains and losses that under generally
     accepted accounting principles are not includable in reported net income
     but are reflected in shareholders' equity.  The standard permits the
     statement of changes in shareholders' equity to be used to satisfy its
     requirements and requires companies to report comparative totals for
     comprehensive income in interim reports.  The following table presents
     the Corporation's comprehensive income ($000's):

                                                     Three Months Ended
                                            ----------------------------------
                                               March 31,            March 31,
                                                 1998                 1997
                                            -------------        -------------
     Net income                            $     72,931         $     54,799

     Other comprehensive income

       Net change in unrealized securities
        gains (losses), net                      (3,897)             (16,822)
                                            -------------        -------------
     Total comprehensive income            $     69,034         $     37,977
                                            =============        =============


     Other comprehensive income as shown is net of deferred income tax
     benefits of $2,093 and $9,703 for the three months ended March 31, 1998
     and 1997, respectively.
<PAGE>
<PAGE>
                         MARSHALL & ILSLEY CORPORATION
                CONSOLIDATED AVERAGE BALANCE SHEETS (Unaudited)
                                   ($000's)

                                              Three Months Ended March 31
                                            ------------------------------
Assets                                             1998            1997
- ------                                      ------------------------------
Cash and due from banks                     $     645,383   $     578,564
Short-term investments                            151,533         180,108
Trading securities                                 37,727          40,528

Investment securities:
  Taxable                                       3,975,709       3,027,293
  Tax-exempt                                    1,024,921         848,712
                                              ------------    ------------
Total investment securities                     5,000,630       3,876,005

Loans and leases:
  Commercial                                    3,381,047       2,946,136
  Real estate                                   7,486,639       4,933,500
  Personal                                      1,136,516       1,159,720
  Lease financing                                 484,706         342,995
                                              ------------    ------------
                                               12,488,908       9,382,351
  Less: Allowance for loan and lease losses       205,106         157,314
                                              ------------    ------------
Total loans and leases                         12,283,802       9,225,037

Premises and equipment, net                       340,112         316,588
Accrued interest and other assets                 852,569         390,713
                                              ------------    ------------
Total Assets                                $  19,311,756   $  14,607,543
                                              ============    ============

Liabilities and Shareholders' Equity
- ------------------------------------
Deposits:
  Noninterest bearing                       $   2,362,304   $   2,087,103
  Interest bearing                             11,439,013       8,513,308
                                              ------------    ------------
Total deposits                                 13,801,317      10,600,411
Funds purchased and security repurchase
  agreements                                    1,958,933       1,645,089
Other short-term borrowings                       239,194         164,563
Long-term borrowings                              872,763         574,791
Accrued expenses and other liabilities            483,972         344,549
                                              ------------    ------------
Total liabilities                              17,356,179      13,329,403

Shareholders' equity                            1,955,577       1,278,140
                                              ------------    ------------
Total Liabilities and Shareholders' Equity  $  19,311,756   $  14,607,543
                                              ============    ============
<PAGE>
<PAGE>
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL POSITION AND RESULTS OF
OPERATIONS

THREE MONTHS ENDED MARCH 31, 1998 AND 1997
- ------------------------------------------
Net income for the first quarter of 1998 amounted to $72.9 million compared to
$54.8 million for the same period in the prior year.  Basic and diluted earnings
per share were $.70 and $.66 respectively for the three months ended March 31,
1998, compared with $.61 and $.56, respectively for the three months ended March
31, 1997. The return on average assets and average equity were 1.53% and 15.12%
for the quarter ended March 31, 1998 and 1.52% and 17.39% for the quarter ended
March 31, 1997.

The Corporation's results of operations and average financial position for the
first quarter of 1998 includes the effects of the merger with Security Capital
Corporation ("Security") which was completed on October 1, 1997 and accounted
for as a purchase.  Security had approximately $2.2 billion of consolidated
loans and $2.3 billion of deposits at the time of merger.

The following tables present a summary of each of the major elements of the
consolidated operating income statement, certain financial statistics and a
summary of  the major operating income statement elements stated as a percent
of average consolidated assets - converted to a fully taxable equivalent basis
(FTE) where appropriate -  for the current quarter and previous four quarters. 

SUMMARY CONSOLIDATED OPERATING INCOME STATEMENTS AND FINANCIAL STATISTICS
- -------------------------------------------------------------------------
($000's except per share data)
- ------------------------------
<TABLE>
<CAPTION>
                                      1998                       1997
                                   ---------- -------------------------------------------
                                     First      Fourth     Third      Second     First
                                    Quarter    Quarter    Quarter    Quarter    Quarter
                                   ---------- ---------- ---------- ---------- ----------
<S>                              <C>        <C>        <C>        <C>        <C>
Interest Income                   $  334,907 $  343,884 $  274,583 $  267,280 $  257,923
Interest Expense                    (178,270)  (178,237)  (139,065)  (134,040)  (128,281)
                                   ---------- ---------- ---------- ---------- ----------
Net Interest Income                  156,637    165,647    135,518    133,240    129,642

Provision for Loan and Lease Losses   (4,705)    (4,378)    (4,258)    (4,306)    (4,311)

Net Securities Gains                   6,375      2,285        137         13        803

Other Income                         169,875    168,178    152,076    138,574    136,792

Other Expense                       (214,250)  (221,958)  (190,149)  (182,527)  (180,767)
                                   ---------- ---------- ---------- ---------- ----------
Income Before Taxes                  113,932    109,774     93,324     84,994     82,159

Income Tax Provision                 (41,001)   (37,915)   (31,460)   (28,372)   (27,360)
                                   ---------- ---------- ---------- ---------- ----------
Operating Income                  $   72,931 $   71,859 $   61,864 $   56,622 $   54,799
                                   ========== ========== ========== ========== ==========
Per Common Share
   Operating Income Per Share
      Basic                       $     0.70 $     0.69 $     0.68 $     0.62 $     0.61
      Diluted                           0.66       0.65       0.63       0.58       0.56
   Dividends                           0.200      0.200      0.200      0.200      0.185

Return on Average Equity
   Based on Operating Income           15.12 %    15.06 %    18.01 %    17.37 %    17.39 %
</TABLE>
<PAGE>
<PAGE>
CONSOLIDATED OPERATING INCOME STATEMENT COMPONENTS AS A PERCENT OF
- ------------------------------------------------------------------
AVERAGE TOTAL ASSETS
- --------------------
<TABLE>
<CAPTION>
                                      1998                        1997
                                   ---------- -------------------------------------------
                                     First      Fourth     Third      Second     First
                                    Quarter    Quarter    Quarter    Quarter    Quarter
                                   ---------- ---------- ---------- ---------- ----------
<S>                                <C>        <C>        <C>        <C>        <C>
Interest Income (FTE)                   7.16 %     7.27 %     7.29 %     7.35 %     7.30 %
Interest Expense                       (3.74)     (3.69)     (3.62)     (3.61)     (3.56)
                                   ---------- ---------- ---------- ---------- ----------
Net Interest Income                     3.42       3.58       3.67       3.74       3.74

Provision for Loan and Lease Losses    (0.10)     (0.09)     (0.11)     (0.12)     (0.12)

Net Securities Gains                    0.13       0.05       0.00       0.00       0.02

Other Income                            3.57       3.49       3.96       3.74       3.80

Other Expense                          (4.50)     (4.61)     (4.95)     (4.92)     (5.02)
                                   ---------- ---------- ---------- ---------- ----------
Income Before Taxes                     2.52       2.42       2.57       2.44       2.42

Income Tax Provision                   (0.99)     (0.93)     (0.96)     (0.91)     (0.90)
                                   ---------- ---------- ---------- ---------- ----------
Return on Average Assets
   Based on Operating Income            1.53 %     1.49 %     1.61 %     1.53 %     1.52 %
                                   ========== ========== ========== ========== ==========
</TABLE>

The following table reconciles net income to operating income before
amortization of intangibles ("tangible operating income").  Amortization
includes amortization of goodwill and core deposit premiums and is net of
negative goodwill accretion and the income tax expense or benefit, if any, 
related to each component.  These calculations were specifically formulated by
the Corporation and may not be comparable to similarly titled measures reported
by other companies.


SUMMARY CONSOLIDATED TANGIBLE OPERATING INCOME AND FINANCIAL STATISTICS
- -----------------------------------------------------------------------
($000's except per share data)
- ------------------------------
<TABLE>
<CAPTION>
                                      1998                       1997
                                   ---------- -------------------------------------------
                                     First      Fourth     Third      Second     First
                                    Quarter    Quarter    Quarter    Quarter    Quarter
                                   ---------- ---------- ---------- ---------- ----------
<S>                              <C>        <C>        <C>        <C>        <C>
Net Income                        $   72,931 $   71,859 $   61,864 $   56,622 $   54,799

Amortization, net of tax               5,193      5,093        871        872        870
                                   ---------- ---------- ---------- ---------- ----------
Tangible Operating Income         $   78,124 $   76,952 $   62,735 $   57,494 $   55,669
                                   ========== ========== ========== ========== ==========

Tangible Operating Income Per Share

   Basic                          $     0.75 $     0.74 $     0.69 $     0.63 $     0.62

   Diluted                              0.70       0.69       0.64       0.59       0.57

Return on Average

   Tangible Assets                      1.67       1.62 %     1.64 %     1.56 %     1.55 %

   Tangible Equity                     19.11      19.24      18.80      18.19      18.25
</TABLE>

NET INTEREST INCOME
- -------------------
Net interest income for the first quarter of 1998 amounted to $156.6  million,
an increase of $27.0 million or 20.8% from the $129.6 million reported for the
first quarter of 1997.  The increase in the volume of average earning assets
contributed approximately $84.4 million while the decrease in yield on earning
assets, primarily loans, decreased interest income by approximately $7.4
million.  The increase in the volume of average interest bearing liabilities
contributed approximately $42.8 million and the increase in the cost of interest
bearing liabilities contributed approximately $7.2 million to the increase in
interest expense.  The large changes attributable to volume reflect the effect
of the acquisition of Security in the fourth quarter of 1997.
<PAGE>
<PAGE>
Average earning assets increased $4.2 billion or 31.2% in the first quarter of
1998 compared to the same period a year ago and increased $116.6 million or .7%
since the fourth quarter of 1997.  Including securitized adjustable rate
mortgage loans (ARMS), average loans grew approximately $3.6 billion or 36.1%
compared to the first quarter of last year and were relatively unchanged since
the fourth quarter of 1997. Average securities, excluding securitized ARMs,
increased $649.6 million for the three months ended March 31, 1998 compared with
the same period in the prior year and increased $131.5 million since the fourth
quarter of 1997.

Average interest bearing liabilities increased $3.6 billion or 33.1%  in the
first quarter of 1998 compared to the same period in 1997 and increased $272.2
million or 1.9% since the fourth quarter of 1997.  Since the fourth quarter of
1997, average interest bearing deposits increased $249.4 million or 2.2% while
average total borrowings increased $22.9 million.

The growth and composition of the Corporation's quarterly average loan portfolio
for the current quarter and previous four quarters are reflected in the
following table.  Securitized ARM loans which are classified in the consolidated
balance sheets as investment securities available for sale are included to
provide a more meaningful comparison ($ in millions):

Marshall & Ilsley Corporation's quarterly average loan and lease portfolio
<TABLE>
<CAPTION>
                                                                               Growth Pct.
                                                                            -----------------
                                1998                    1997                       First Qtr
                              --------  -----------------------------------         1998 Vs.
                               First     Fourth   Third    Second   First          Fourth Qtr
                              Quarter   Quarter  Quarter  Quarter  Quarter  Annual    1997
                              --------  -------- -------- ----------------- ------- --------
<S>                         <C>       <C>      <C>      <C>      <C>      <C>       <C>
Commercial Loans             $  3,381  $  3,285 $  3,143 $  3,057 $  2,946    14.8 %    2.9 %

Real Estate Loans
 Construction                     402       397      336      320      323    24.1      1.2
 Commercial Mortgages           3,365     3,295    2,526    2,496    2,417    39.2      2.1
  Residential Mortgages         3,720     3,919    2,480    2,329    2,193    69.6     (5.1)
  Securitized ARM loans         1,025       972      436      512      550    86.4      5.5
                              --------  -------- -------- -------- -------- ------- --------
 Residential Mortgages          4,745     4,891    2,916    2,841    2,743    73.0     (3.0)
                              --------  -------- -------- -------- -------- ------- --------
Total Real Estate Loans         8,512     8,583    5,778    5,657    5,483    55.2     (0.8)

Personal Loans
 Personal Loans                   857       876      854      850      872    (1.7)    (2.1)
 Student Loans                    279       274      267      277      288    (3.0)     1.9
                              --------  -------- -------- -------- -------- ------- --------
Total Personal Loans            1,136     1,150    1,121    1,127    1,160    (2.0)    (1.2)

Lease Financing Receivables
 Commercial                       322       321      287      280      279    15.3      0.4
 Personal                         163       141      114       88       64   155.4     15.1
                              --------  -------- -------- -------- -------- ------- --------
Lease Financing Receivables       485       462      401      368      343    41.3      4.9
                              --------  -------- -------- -------- -------- ------- --------
Total Consolidated Average
  Loans, Leases and ARMS     $ 13,514  $ 13,480 $ 10,443 $ 10,209 $  9,932    36.1 %    0.3 %
                              ========  ======== ======== ======== ======== ======= ========
Total Consolidated
  Average Loans and Leases   $ 12,489  $ 12,508 $ 10,007 $  9,697 $  9,382    33.1 %   (0.2)%
                              ========  ======== ======== ======== ======== ======= ========
</TABLE>

As previously discussed, the annual growth is largely attributable to the
Security merger.

During the first quarter of 1998, approximately $117 million of ARM loans were
converted into government guaranteed agency pool securities. Approximately $218
million of  ARM loans were securitized in all of 1997.   In addition,
approximately $580 million of securitized ARMs were acquired in the Security
merger.
<PAGE>
<PAGE>
Compared with the fourth quarter of 1997, total consolidated average loans,
leases and securitized ARMs were relatively unchanged. The growth in commercial
and commercial real estate loans and lease financing receivables of
approximately $188.7 million was offset by declines in total residential real
estate loans and securitized ARMs of $145.3 million.  The decrease in
residential real estate loans and securitized ARMs reflects the effect of
increased prepayments associated with customer refinancings to fixed rate loans
in response to the recent interest rate environment.  Generally, the Corporation
sells fixed rate residential real estate loans in the secondary market.

The growth and composition of the Corporation's quarterly average deposits for
the current and prior year's quarters are as follows ($ in millions):

Marshall & Ilsley Corporation's quarterly average deposits                 
<TABLE>
<CAPTION>
                                                                               Growth Pct.
                                                                            -----------------
                                1998                    1997                       First Qtr
                              --------  -----------------------------------         1998 Vs.
                               First     Fourth   Third    Second   First          Fourth Qtr
                              Quarter   Quarter  Quarter  Quarter  Quarter  Annual    1997
                              --------  -------- -------- ----------------- ------- --------
<S>                         <C>       <C>      <C>      <C>      <C>      <C>       <C>
Noninterest Bearing
  Commercial                 $  1,539  $  1,670 $  1,476 $  1,388 $  1,362    13.0 %   (7.9)%
  Personal                        482       468      443      443      430    12.1      3.0
  Other                           341       402      349      324      295    15.6    (15.2)
                              --------  -------- -------- -------- -------- ------- --------
Total Noninterest
  Bearing Deposits              2,362     2,540    2,268    2,155    2,087    13.2     (7.0)

Interest Bearing
  Savings & NOW                 2,043     2,060    1,753    1,732    1,753    16.5     (0.9)
  Money Market                  3,647     3,517    2,695    2,642    2,613    39.6      3.7
  Other CDs & Time Deposits     4,314     4,237    3,122    3,032    3,027    42.5      1.8
  Cds Greater than $100,000       831       776      678      672      662    25.5      7.0
  Brokered CDs                    604       600      600      559      458    31.8      0.7
                              --------  -------- -------- -------- -------- ------- --------
Total Interest
  Bearing Deposits             11,439    11,190    8,848    8,637    8,513    34.4      2.2
                              --------  -------- -------- -------- -------- ------- --------
Total Consolidated
  Average Deposits           $ 13,801 $  13,730 $ 11,116 $ 10,792 $ 10,600    30.2 %    0.5 %
                              ========  ======== ======== ======== ======== ======= ========
</TABLE>

Compared with the fourth quarter of 1997, average deposit growth amounted to
$71.6 million or .5%.  Money market, CDs greater than $100 and foreign time
deposits exhibited the largest growth and accounted for approximately $332.7
million of the growth in average deposits.  Offsetting this growth were declines
in noninterest bearing deposits of $177.8 million, other time deposits,
excluding foreign time, of $70.1 million and savings and NOW declines of $17.5
million. This shift in deposit mix had a negative impact on the net interest
margin.

The Corporation's consolidated average interest earning assets and interest
bearing liabilities, interest earned and interest paid for the current quarter,
prior year fourth quarter and prior year first quarter are presented in the
following table.  Securitized ARM loans that are classified as investment
securities available for sale are included with loans to make the comparative
information more meaningful.
<PAGE>
<PAGE>
YIELD & COST ANALYSIS
($ in millions)
<TABLE>
<CAPTION>
                        Three Months Ended Mar. 31,   Three Months Ended Dec. 31,  Three Months Ended Mar. 31,
                       ----------------------------  ---------------------------- ----------------------------
                                    1998                         1997                         1997
                       ----------------------------  ----------------------------- ----------------------------
                                           Average                        Average                      Average
                         Average           Yield or    Average            Yield or   Average           Yield or
                         Balance  Interest Cost (b)    Balance  Interest Cost (b)    Balance  Interest Cost (b)
                       ----------------------------  ----------------------------- ----------------------------
<S>                   <C>        <C>      <C>       <C>        <C>      <C>       <C>        <C>      <C>
Loans and Leases (a)   $13,513.8  $  273.2    8.22 % $13,479.0  $  281.4    8.30 % $ 9,932.2  $  205.4    8.40 %

Investment Securities:
   Taxable               2,950.8      47.4    6.55     2,883.3      46.3    6.41     2,477.4      40.1    6.59
   Tax Exempt (a)        1,024.9      17.9    7.33       961.0      19.8    8.36       848.7      14.6    7.09

Other Short-term
 Investments (a)           189.3       2.5    5.38       238.9       3.2    5.39       220.7       2.9    5.29
                       ---------------------------- ------------------------------ -----------------------------
Total Interest
 Earning Assets        $17,678.8  $  341.0    7.86 % $17,562.2  $  350.7    7.95 % $13,479.0  $  263.0    7.94 %
                       ============================= ============================= =============================

Money Market Savings   $ 3,647.5  $   40.8    4.54 % $ 3,517.2  $   39.5    4.46 % $ 2,613.0  $   27.0    4.18 %
Regular Savings
 & NOW                   2,042.6      11.1    2.20     2,060.1      11.3    2.17     1,752.9       9.1    2.12
Other CDs & Time
 Deposits                4,314.3      61.4    5.77     4,236.5      61.7    5.78     3,027.3      42.3    5.67
CDs Greater than
 $100 & Brokered CDs     1,434.6      21.0    5.93     1,375.8      20.8    6.00     1,120.1      15.9    5.74
                       ----------------------------- ----------------------------- -----------------------------
Total Interest
  Bearing Deposits      11,439.0     134.3    4.76    11,189.6     133.3    4.73     8,513.3      94.3    4.49
Short-term
 Borrowings              2,198.1      29.9    5.52     2,221.1      31.2    5.57     1,809.7      23.8    5.34
Long-term
 Borrowings                872.8      14.1    6.54       826.9      13.7    6.58       574.8      10.2    7.16
                       ----------------------------- ----------------------------- -----------------------------
Total Interest
 Bearing Liabilities   $14,509.9  $  178.3    4.98 % $14,237.6  $  178.2    4.97 % $10,897.8  $  128.3    4.77 %
                       ============================= ============================= =============================
Net Interest Margin
 (FTE) as a Percent
 of Average Earning
 Assets                           $  162.7    3.75 %            $  172.5    3.91 %            $  134.7    4.06 %
                                  ==================            ==================            ==================

</TABLE>

 (a) Fully taxable equivalent basis (FTE), assuming a Federal income tax rate
     of 35%, and excluding disallowed interest expense.
 (b) Based on average balances excluding fair value adjustments for available
     for sale securities.
<PAGE>
<PAGE>
The net interest margin as a percent of average earning assets declined 31 basis
points since the first quarter of 1997 and decreased 16 basis points from 3.91%
in the fourth quarter of 1997 to 3.75% in the current quarter. The yield on
average earning assets decreased 9 basis points since the fourth quarter of
1997.  The yield on loans and securitized ARMs, the largest earning asset,
declined 8 basis points and contributed approximately $8.8 million to the
decline in net interest income compared with the fourth quarter of 1997.  This
decline reflects, in part, accelerated run-off of higher yielding loans and
securitized ARMs due to prepayments and refinancings in response to the interest
rate environment.  As a result, the Corporation increased the amortization
associated with the purchase accounting premium assigned to loans and investment
securities acquired in the Security merger.  Net interest income may continue
to be adversely affected if the current prepayment experience continues.  In
addition, the decline in tax-free dividend income of $1.9 million also
contributed to the decrease in net interest income in the current quarter
compared with the fourth quarter of 1997.  The cost of interest bearing deposits
increased 3 basis points while short-term and long-term borrowing costs
decreased 5 and 4 basis points, respectively compared with the fourth quarter
of 1997.

At March 31, 1998, the Corporation had standard receive fixed/pay floating
interest rate swaps and interest rate caps and floors designated as hedges to
manage the interest rate volatility associated with variable rate loans and
variable rate debt.  In addition, the Corporation had callable receive fixed /
pay floating interest rate swaps designated as hedges to offset the brokered
callable CDs previously discussed.

The Corporation's position with respect to interest rate swaps and interest rate
caps and floors at March 31, 1998 consisted of the following ($ in millions):

    Interest Rate Swaps
    -------------------
      Notional Value                                   $575
      Weighted average receive rate                    6.24%
      Weighted average pay rate                        5.68%
      Weighted average remaining term (in years)       2.06
      Estimated fair value                            $4.20
    
    Callable Interest Rate Swaps
    ----------------------------
      Notional Value                                   $230
      Weighted average receive rate                    6.47%
      Weighted average pay rate                        5.46%
      Weighted average remaining term (in years)       7.16
      Estimated fair value                           ($0.67)
    
    Interest Rate Caps and Floors
    -----------------------------
      Notional Value                                    $50
      Strike Rate                                      5.63%
      Index                                            5.75%
      Weighted average remaining term (in years)       2.63
      Estimated fair value                            $0.18
      Unamortized premium                             $0.30


For the three months ended March 31, 1998, the effect on net interest income
resulting from the swaps, net of cap and floor premium amortization, was a
positive $1.1 million compared with a positive $.8 million in the same period
in 1997.
<PAGE>
<PAGE>
PROVISION FOR LOAN AND LEASE LOSSES AND CREDIT QUALITY
- ------------------------------------------------------
At March 31, 1998, nonperforming assets were $84.9 million compared to $87.3
million at December 31, 1997 and $77.6 million at March 31, 1997.  Nonaccrual
loans and leases, the largest component of nonperforming assets, increased $2.4
million since the fourth quarter and increased $3.9 million since March 31,
1997.  Other real estate owned decreased $3.5 million and loans and leases past
due 90 days or more decreased $1.2 million while since the fourth quarter of
1997.  Compared to March 31, 1997, renegotiated loans and loans and leases past
due 90 days or more decreased $.5 million and $.4 million, respectively. Other
real estate owned increased $4.3 million since March 31, 1997,which is primarily
due to branch closures associated with the Security merger which occurred in the
fourth quarter of 1997.

Total nonaccrual commercial loans and leases increased $2.9 million since the
fourth quarter but decreased $1.1 million since March 31, 1997.  Nonaccrual
commercial loans and leases are substantially responsible for the increase in
nonaccrual loans at March 31, 1998 compared to December 31, 1997.  Increases in
nonaccrual construction and land development loans and nonaccrual commercial
real estate loans were offset by declines in nonaccrual residential 
real estate loans.  As a result total nonaccrual real estate loans at March 31,
1998 were relatively unchanged since December 31, 1997.
 
Net recoveries in the first quarter of 1998 amounted to $2.8 million or (.09)%
of average loans and leases compared to net charge-offs of $2.2 million or .07%
of average loans and leases in the fourth quarter of 1997 and $5.6 million or
 .24% of average loans and leases in the first quarter of 1997.  One larger
commercial loan at the Corporation's lead bank accounted for $4.3 million of the
recoveries for the three months ended March 31, 1998.

The allowance for loan and lease losses amounted to $210.3 million or 1.66% of
total loans at March 31, 1998 compared to $202.8 million or 1.62% at December
31, 1997 and $154.6 million or 1.61% at March 31, 1997.  The coverage ratio of
the allowance for loan and lease losses to nonperforming loans and leases was
281% at March 31, 1998 compared with 275% at December 31, 1997 and 215% at March
31, 1997.

The provision for loan and lease losses amounted to $4.7 million in the first
quarter of 1998 compared to $4.3 million in the first quarter of 1997.  The
increase is primarily due to loan growth.
<PAGE>
<PAGE>
CONSOLIDATED CREDIT QUALITY INFORMATION  ($000's)

                                1998                   1997
                             --------  -----------------------------------
                               First     Fourth   Third    Second   First
NONPERFORMING ASSETS          Quarter   Quarter  Quarter  Quarter  Quarter
- --------------------         --------  -------- -------- -------- --------
Nonaccrual                   $ 66,517  $ 64,153 $ 61,685 $ 56,723 $ 62,576

Renegotiated                    1,241     1,338    1,242    1,636    1,736

Past Due 90 Days or More        7,080     8,238    7,721    7,461    7,517
                             --------  -------- -------- -------- --------
Total Nonperforming
   Loans and Leases            74,838    73,729   70,648   65,820   71,829

Other Real Estate Owned        10,042    13,567    3,637    5,625    5,729
                             --------  -------- -------- -------- --------
Total Nonperforming Assets   $ 84,880  $ 87,296 $ 74,285 $ 71,445 $ 77,558
                             ========  ======== ======== ======== ========

ALLOWANCE FOR LOAN
   AND LEASE LOSSES          $210,307  $202,818 $157,893 $155,620 $154,599
                             ========  ======== ======== ======== ========

CONSOLIDATED STATISTICS
- -----------------------
Net Charge-offs (Recoveries)
   to Average Loans and Leases
   Annualized                   (0.09)%    0.07 %   0.08 %   0.14 %   0.24 %

Total Nonperforming Loans
   and Leases to Total
   Loans and Leases              0.59      0.59     0.69     0.66     0.75

Total Nonperforming Assets
   to Total Loans and Other
   Real Estate Owned             0.67      0.70     0.73     0.72     0.81

Allowance for Loan and
   Lease Losses to Total
   Loans and Leases              1.66      1.62     1.54     1.57     1.61

Allowance for Loan and
   Lease Losses to Nonperforming
   Loans and Leases               281       275      223      236      215

<PAGE>
<PAGE>
                               1998                   1997
NONACCRUAL LOANS             --------  -----------------------------------
- ----------------               First     Fourth   Third    Second   First
AND LEASES BY TYPE            Quarter   Quarter  Quarter  Quarter  Quarter
- ------------------           --------  -------- -------- -----------------
Commercial
  Commercial, Financial &
    Agricultural             $ 16,491  $ 12,362 $ 17,229 $ 13,462 $ 17,945
  Lease Financing
    Receivables                 2,648     3,855    2,073    1,430    2,290
                             --------  -------- -------- -------- --------
Total Commercial               19,139    16,217   19,302   14,892   20,235

Real Estate
  Construction and Land
    Development                 1,869     1,329      573    1,311    1,650
  Commercial Mortgage          14,942    13,901   19,631   18,185   19,987
  Residential Mortgage         27,640    29,320   18,848   19,203   17,286
                             --------  -------- -------- -------- --------
Total Real Estate              44,451    44,550   39,052   38,699   38,923

Personal                        2,927     3,386    3,331    3,132    3,418
                             --------  -------- -------- -------- --------
Total Nonaccrual Loans
  and Leases                 $ 66,517  $ 64,153 $ 61,685 $ 56,723 $ 62,576
                             ========  ======== ======== ======== ========


RECONCILIATION OF CONSOLIDATED ALLOWANCE FOR LOAN AND LEASE LOSSES ($000's)
- ---------------------------------------------------------------------------

                                1998                   1997
                             --------  -----------------------------------
                               First     Fourth   Third    Second   First
                              Quarter   Quarter  Quarter  Quarter  Quarter
                             --------  -------- -------- -----------------
Beginning Balance            $202,818  $157,893 $155,620 $154,599 $155,895

Provision for Loan and
  Lease Losses                  4,705     4,378    4,258    4,306    4,311

Allowance of Bank Acquired        --     42,773      --       --       -- 

Loans and Leases Charged-off
   Commercial                     396     1,249    1,024    2,773    3,305
   Real Estate                    906       911      807      446    1,466
   Personal                     2,367     1,992    1,841    1,706    2,003
   Leases                         165       416      208      462       80
                             --------  -------- -------- -------- --------
Total Charge-offs               3,834     4,568    3,880    5,387    6,854

Recoveries on Loans and Leases
   Commercial                   5,704     1,387      916    1,089      349
   Real Estate                    150       302      249      314      235
   Personal                       759       619      596      617      652
   Leases                           5        34      134       82       11
                             --------  -------- -------- -------- --------
Total Recoveries                6,618     2,342    1,895    2,102    1,247
                             --------  -------- -------- -------- --------
Net Loans and Leases 
  Charge-offs (Recoveries)     (2,784)    2,226    1,985    3,285    5,607
                             --------  -------- -------- -------- --------
Ending Balance               $210,307 $ 202,818 $157,893 $155,620 $154,599
                             ========  ======== ======== ======== ========
<PAGE>
<PAGE>
OTHER INCOME
- ------------
Total other income in the first quarter of 1998 amounted to $176.3 million, an
increase of $38.7 million or 28.1%, compared to $137.6 million in the same
period last year.

Data  processing revenue increased $16.7 million or 20.8% from $80.1 million in
the first quarter of 1997 to $96.8 million in the current quarter. Processing 
revenue increased $10.3 million or 18.4%.  Software revenue increased $4.2
million or 31.9%.  Buyout fees, which can vary from period to period, decreased
$2.4 million  while conversion fees increased $1.5 million or 54.8%.  Revenues
from professional services such as contract programming and consulting increased
$3.1 million.  Compared to the fourth quarter of 1997, revenue from data
processing services increased $2.1 million or 2.2%.

Trust services revenue amounted to $21.5 million in the first quarter of 1998,
an increase of $2.5 million or 13.4% compared to $18.9 million in the first
quarter of 1997.  All components of trust services revenue experienced an
increase led by  personal trust fees and corporate trust fees which increased
$.9 million and $1.0 million, respectively.

Other customer services revenue amounted to $36.2 million in the first quarter
of 1998 compared to $29.6 million in the first quarter of 1997.  Other customer
services  revenue for the current quarter include the effects of the Security
merger. Service charges on deposits amounted to $14.4 million in the first
quarter of 1998 a decrease of $.4 million compared to the fourth quarter of
1997.  Compared with the fourth quarter of 1997, real estate loan and late fees
increased $1.1 million and Corporate finance fees associated with the
Corporation's Capital Markets Group increased $0.2 million in the first quarter
of 1998.

Net securities gains in the first quarter of 1998 amounted to $6.4 million
compared with $.8 million in the first quarter of 1997. The Corporation's
Capital Markets Group realized gains of $6.4 million in the three months ended
March 31, 1998 compared to $2.1 million for the same period in the prior year. 
The Capital Markets Group gain recognized in the first quarter of 1997 was
offset by $1.3 million of losses recognized  by the Corporation from the sale
of available for sale securities.

All other income amounted to $15.3 million in the first quarter of 1998 compared
to $8.2 million in the first quarter of 1997.  Gains from the sale of
residential mortgage loans, which includes the servicing rights, increased $6.2
million. Revenue from bank-owned life insurance acquired in the Security merger
amounted to $.8 million for the three months ended March 31, 1998.


OTHER EXPENSE
- -------------
Total other expenses in the first quarter of 1998 amounted to $214.3 million
compared with $222.0 million in the fourth quarter of 1997 and $180.8 million
in the first quarter of 1997.

Expenses of the Corporation's banking business in the first quarter of 1998
include the effects of the Security merger.  The Corporation added approximately
400 full-time equivalent employees as a direct result of the merger even though
the majority of Security' branches and operations facilities were closed due to
customer service and operating overlap.

The Corporation's nonbanking businesses, especially its Data Services segment
("Data Services"), continue to be the primary contributor to operating expense
growth. Data Services expense growth represents over half of the consolidated
operating expense growth and reflects the cost of adding  processing capacity
and other related costs associated with increased revenue growth and maintenance
activities for Year 2000.
<PAGE>
<PAGE>
Expense Control is sometimes measured in the financial services industry by the
efficiency ratio statistic.  The efficiency ratio is calculated by taking total
other expense (excluding nonrecurring charges) divided by the sum of total other
income (excluding securities gains or losses) and net interest income on a fully
taxable equivalent basis. The Corporation's efficiency ratios for the three
months ended March 31, 1998 and years ended December 31, 1997 and 1996:

                                          Three
                                          Months       Years Ended Dec. 31,
                                          Ended      -----------------------
          Efficiency Ratios            Mar. 31, 1998     1997        1996
- -------------------------------------- ------------- ----------- -----------
Consolidated Corporation                     64.4 %      65.6 %      65.9 %

Consolidated Corporation
   Excluding Data Services                   54.6 %      56.6 %      57.9 %


Salaries and employee benefits expense amounted to $123.7 million in the first
quarter of 1998 compared to $105.4 million in the first quarter of 1997, an
increase of $18.3 million or 17.4%.  Salaries and employee benefits expense of
Data Services increased $12.0 million or 24.7% in the current quarter compared
to the same period last year.  At March 31, 1998  Data Services had on average
approximately 621 more full time equivalent employees when compared to March 31,
1997 which reflects, in part, additional processing and service centers.  In
addition, expense associated with contract programmers and other temporary help
primarily used in the Year 2000 project increased $.8 million over the
comparative periods.

Data Services expense growth accounted for approximately $3.4 million or 69% of
the increase in net occupancy, equipment and software expenses in the first
quarter of 1998 compared to the first quarter of 1997.

The increase in payments to regulatory agencies in the first quarter of 1998
compared to the like period in the prior year reflects the additional deposits
acquired in the Security merger.

Other expense amounted to $34.2 million in the first quarter of 1998, an
increase of $9.0 million or 35.9% compared to the first quarter of 1997.  Other
expenses associated with Data Services accounted for approximately $2.2 million
of the increase including the effect of the capitalization of costs, net of
amortization, associated with software development and data processing
conversions.  Amortization expense for goodwill, core deposit premiums and
mortgage servicing rights, primarily attributable to the Security merger,
increased $7.4 million.


INCOME TAXES
- ------------
The provision for income taxes for the three months ended March 31, 1998
amounted to $41.0 million or 36% of pre-tax income compared to $27.4 million or
33% of pre-tax income for the three months ended March 31, 1997. The change in
the effective tax is primarily due to the increase in nondeductible goodwill
amortization expense and the decrease in tax-exempt income relative to total
pre-tax income in the current quarter compared to the prior year quarter.


CAPITAL RESOURCES
- -----------------
Shareholders' equity was $1.97 billion at March 31, 1998 compared to $1.92
billion at December 31, 1997 and $1.28 billion at March 31, 1997.

Net unrealized gains on securities available for sale at March 31, 1998
decreased $3.9 million compared to December 31, 1997.

On February 19, 1998, the Corporation announced that its Board of Directors
voted to rescind the Corporation's Stock Repurchase Program effective March 16,
1998.  During the first quarter of 1998, prior to March 16, 1998, 74,500 shares
of common stock were acquired with an aggregate cost of $4.3 million.

The Corporation continues to have a strong capital base and its regulatory 
capital ratios are significantly above the minimum requirements as shown in the
following tables.
<PAGE>
<PAGE>
<TABLE>
<CAPTION>
                                                       RISK-BASED CAPITAL RATIOS ($in millions)
                                    -------------------------------------------------------------------------
                                                March 31, 1998                      December 31, 1997
                                    ------------------------------------ ------------------------------------
                                           Amount             Ratio             Amount             Ratio
                                    ------------------- ---------------- ------------------- ----------------
<S>                                <C>                 <C>              <C>                 <C>
Tier 1 Capital                      $   1,785.3         12.51 %          $   1,735.5         12.19 %
Tier 1 Capital Minimum Requirement        570.6          4.00                  569.7          4.00
                                      ----------        ------             ----------        ------
Excess                              $   1,214.7          8.51 %          $   1,165.8          8.19 %
                                      ==========        ======             ==========        ======

Total Capital                       $   2,064.0         14.47 %          $   2,013.9         14.14 %
Total Capital Minimum Requirement       1,141.3          8.00                1,139.4          8.00
                                      ----------        ------             ----------        ------
Excess                              $     922.7          6.47 %          $     874.5          6.14 %
                                      ==========        ======             ==========        ======

Risk-Adjusted Assets                $  14,265.9                          $  14,241.9
                                      ==========                           ==========
</TABLE>
<TABLE>
<CAPTION>
                                                           LEVERAGE RATIOS ($in millions)
                                    -------------------------------------------------------------------------
                                                March 31, 1998                      December 31, 1997
                                    ------------------------------------ ------------------------------------
                                           Amount             Ratio             Amount             Ratio
                                    ------------------- ---------------- ------------------- ----------------
<S>                                <C>                 <C>              <C>                 <C>
Tier 1 Capital                      $   1,785.3          9.45 %          $   1,735.5          9.25 %
Minimum Leverage Requirement              567.0 -945.1   3.00 -  5.00          562.7 -937.8   3.00 -  5.00
                                      ----------------- --------------     ----------------- --------------
Excess                              $   1,218.3 -840.2   6.45 -  4.45 %  $   1,172.8 -797.7   6.25 -  4.25 %
                                      ================= ==============     ================= ==============

Adjusted Average Total Assets       $  18,901.4                          $  18,756.0
                                      ==========                           ==========

</TABLE>


Year 2000 Update
- ----------------
At December 31, 1997, Data Services estimated that the net cost to change
existing computer programs for both internal and external software will be
approximately $30 million.  As of March 31, 1998, the most recent estimate
places the net cost at approximately $34 million.  During the first quarter of
1998, Data Services had net expense related to Year 2000 of approximately $3.1
million and estimates total net expense in 1998 will be approximately $15
million compared with $10 million net expense in 1997.  Currently there are
approximately 150 full-time equivalent people on the Year 2000 project which
generally consists of service bureau code testing and system verification which
is scheduled to take place throughout 1998.  The majority of Data Services'
contracts do not provide for reimbursement over and above the previously
contracted maintenance amounts.  Future data processing revenue is critically
dependent upon the successful implementation of the necessary changes.

The Corporation and its other affiliates continue to anticipate that its program
for hardware, software, office machines and building systems will be completed
late in 1998 in order to allow for adequate testing and contingency planning. 
Replacement equipment and software will be expensed or capitalized in accordance
with the Corporation's normal accounting policies.  The effect of writing off
the net book value of equipment or software that is not Year 2000 compliant is
not considered material.
<PAGE>
<PAGE>
RECENT DEVELOPMENTS
- -------------------
On April 1, 1998, the Corporation completed the merger with Advantage Bancorp,
Inc. ("Advantage") a Kenosha, Wisconsin based savings and loan holding company
for 1.2 shares of the Corporation's Common Stock for each share of Advantage
Common Stock.  The transaction was accounted for as a pooling-of-interests.

In conjunction with this transaction, in the second quarter of 1998, the
Corporation will record a merger / restructuring charge of approximately $16.3
million ($23.4 million before-tax) consisting of approximately $9.4 million
related to operations and $6.9 million of non-cash employee benefit expenses.
<PAGE>
<PAGE>
Item 3 - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
- -------------------------------------------------------------------

     Market risk arises from exposure to changes in interest rates, exchange
rates, commodity prices, and other relevant market rate or price risk. The
Corporation faces market risk  through trading and other than trading
activities. While market risk that arises from trading activities in the form
of foreign exchange and interest rate risk is immaterial to the Corporation,
market risk from other than trading activities in the form of interest rate risk
is measured and managed through a number of methods. The Corporation uses
financial modeling techniques which measure the sensitivity of future earnings
and the change in fair value due to changing rate environments to measure
interest rate risk. Policies established by the Corporate Asset/Liability
Committee and approved by the Corporate Board of Directors limit exposure for
both earnings and fair value at risk. General interest rate movements are used
to develop sensitivity as the Corporation feels it has no primary exposure to
a specific point on the yield curve. These limits are based on the Corporation's
exposure to a 100 basis point immediate and sustained parallel rate move, either
upward or downward. The Corporation manages interest rate risk through the use
of a limited array of derivative financial instruments. These instruments allow
the Corporation to produce the desired balance sheet repricing structure while
simultaneously meeting the desired objectives of both its borrowing and
depositing customers. For additional information on the Corporation's derivative
financial instruments, see Management's Discussion and Analysis of Financial
Position and Results of Operations.

Interest Rate Risk
- ------------------
     In order to measure earnings and fair value sensitivity to changing rates,
the Corporation uses three different measurement tools including static gap
analysis, simulation of earnings, and market value sensitivity (fair value at
risk).  The static gap analysis starts with contractual repricing information
for assets, liabilities and off-balance sheet instruments. These items are then
combined with repricing estimations for administered rate (NOW, Savings, and
Money Market accounts) and non rate related products (DDA accounts, Other Assets
and Other Liabilities) to create a baseline repricing balance sheet. In addition
to the contractual information, residential mortgage whole loan product and
mortgage-backed securities are adjusted based on industry estimates of
prepayment speeds that capture the expected prepayment of principal above the
contractual amount based on how far away the contractual coupon is from market
coupon rates. The resulting static gap is the base for the earnings sensitivity
calculation. The Corporation's consolidated static gap position as of March 31,
1998 has not materially changed since December 31, 1997.

     The static gap analysis provides a representation of the Corporation's
earnings sensitivity to changes in interest rates. Interest rate risk of
embedded positions including prepayment and early withdrawal options, lagged
interest rate changes, administered interest rate products, and cap and floor
options within products require a more dynamic measuring tool to capture
earnings and fair value risk. Earnings simulation and fair value sensitivity
analysis are used to create a more complete assessment of interest rate risk.

     Along with the static gap analysis, determining the sensitivity of future
earnings to a hypothetical +/- 100 basis point parallel rate shock can be
accomplished through the use of simulation modeling. In addition to the
assumptions used to create the static gap, simulation of earnings includes the
modeling of the balance sheet as an  ongoing entity. Future business assumptions
involving administered rate products, prepayments for future rate sensitive
balances, and the reinvestment of maturing assets and liabilities are included.
These items are then modeled to project income based on a hypothetical change
in interest rates. The resulting pretax income for the next 12 month period  is
compared to the pretax income amount calculated using flat rates. This
difference represents the Corporation's earnings sensitivity to a  +/- 100 basis
point parallel rate shock. The following table illustrates these amounts as of
March 31, 1998 and December 31, 1997, which are within the limits established
by the Corporation:
<PAGE>
<PAGE>
Hypothetical Change
in Interest Rates                                Impact to Pretax Net Income
- -----------------                           -----------------------------------
                                            March 31, 1998    December 31, 1997
                                            --------------    -----------------
100 basis point Shock Up                         (7.2%)             (7.1%)
100 basis point Shock Down                        6.0                6.1%


     These results are based solely on immediate and sustained parallel changes
in market rates and do not reflect the earnings sensitivity that may arise from
other factors such as changes in the shape of the yield curve, the change in
spread between key market rates, or accounting recognition for impairment of
certain intangibles. The above results are also considered to be conservative
estimates due to the fact that no management action to mitigate potential income
variances are included within the simulation process. This action would include,
but would not be limited to, adjustments to the repricing characteristics of any
on or off balance sheet item with regard to short-term rate projections and
current market value assessments.

     Another component of interest rate risk, fair value at risk,  is
determined by the Corporation through the technique of simulating the fair value
of equity in changing rate environments. This technique involves determining the
present value of all contractual asset and liability cash flows (adjusted for
prepayments) based on a predetermined discount rate. The net result of all these
balance sheet items determine the fair value of equity. The fair value of equity
resulting from the current flat rate scenario is compared to the fair value of
equity calculated using discount rates +/- 100 basis points from flat rates to
determine the fair value of equity at risk. Currently, fair value of equity at
risk is less than 1.0% of the market value of the Corporation as of March 31,
1998.

Equity Risk
- -----------
     In addition to interest rate risk, the Corporation incurs market risk
in the form of equity risk. M&I's Capital Markets Group invests in private,
medium-sized companies to help establish new businesses or recapitalize
existing ones. Exposure to the change in equity values for the companies that
are held in their portfolio exists, but due to the nature of the investments,
cannot be quantified within acceptable levels of precision.

     M&I Trust Services administers more than $39 billion in assets and
directly manages a portfolio of more than $9 billion. Exposure exists to
changes in equity values due to the fact that fee income is partially based
on equity balances. While this exposure is present, quantification remains
difficult due to the number of other variables affecting fee income. Interest
rate changes can also have an effect on fee income for the above stated
reasons.

     In addition to the above market risks, material limitations exist in
determining the overall net market risk exposure of the Corporation.
Computation of prospective effects of hypothetical interest rate changes are
based on many assumptions, including levels of market interest rates,
predicted prepayment speeds, and projected decay rates of core deposits.
Other items, such as post retirement benefit obligations can also have fair
value at risk exposure due to changes in interest rates. Therefore, the above
outcomes should not be relied upon as indicative of actual results.
<PAGE>
<PAGE>
                                PART II - OTHER INFORMATION


Item 6 - Exhibits and Reports on Form 8-K
- -----------------------------------------

A.   Exhibits:

     Exhibit 10 - Amended 1995 Directors Stock Option Plan

     Exhibit 11 - Statements - Computation of Earnings Per Share

     Exhibit 12 - Computation of Ratio of Earnings to Fixed Charges

     Exhibit 27 - Financial Data Schedule


B.   Reports on Form 8-K:

     None.
<PAGE>
<PAGE>
                               SIGNATURES



Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



                                  MARSHALL & ILSLEY CORPORATION
                                          (Registrant)



                                  /s/  P.R. Justiliano
                                  ______________________________________

                                  P.R. Justiliano
                                  Senior Vice President and
                                  Corporate Controller 
                                  (Chief Accounting Officer)




                                  /s/  J.E. Sandy 
                                  ______________________________________

                                  J.E. Sandy 
                                  Vice President 


May 14, 1998


<PAGE>
                                                              EXHIBIT 10
<PAGE>
MARSHALL & ILSLEY CORPORATION
1995 DIRECTORS STOCK OPTION PLAN, AS AMENDED
(March 30, 1998)

     1.   PURPOSE OF THE PLAN
     -------------------------
     The purpose of the Marshall & Ilsley Corporation 1995 Directors Stock
Option Plan (the "Plan") is to promote the best interests of Marshall &
Ilsley Corporation (the "Company") and its shareholders by providing the non-
employee directors of the Company with an opportunity to acquire a
proprietary interest in the Company thereby more closely aligning their
interests with those of shareholders and providing a stronger incentive for
them to put forth maximum effort for the continued success and growth of the
Company.  In addition, the opportunity to acquire a proprietary interest in
the Company will aid the Company in attracting and retaining qualified
personnel to serve as directors of the Company.

     2.   ADMINISTRATION OF THE PLAN
     --------------------------------
     (a)  Procedure; Disinterested Directors.  The Board of Directors will
administer the Plan; provided, however, that the Board of Directors may
appoint a committee (the "Committee") of not less than three (3) directors to
administer the Plan if the Board of Directors deems it necessary or advisable
to appoint such Committee, or if it is otherwise necessary to appoint such
Committee in order to comply with the exemptive rules promulgated pursuant to
Section 16(b) of the Securities Exchange Act of 1934, as amended (the
"Exchange Act").

     (b)  Powers.  Grants of options to purchase the common stock, par
value $1.00 per share ("Common Stock"), of the Company under the Plan (the
"Options") and the amount, price, and timing of the awards to be granted will
be automatic as described in Section 5.  However, all questions of
interpretation of the Plan will be determined by the Board of Directors or
the Committee, as applicable, and such determination will be final and
binding upon all parties.

     3.   PARTICIPANTS IN THE PLAN
     ------------------------------
     Participants in the Plan shall consist of all present or future
directors of the Company who are not employees of the Company or its
subsidiaries.  Any director who is an employee of the Company or its
subsidiaries and who subsequently ceases to be an employee of the Company and
its subsidiaries, but remains a director of the Company, shall become
eligible to participate in the Plan at the time such director ceases to be
employed by the Company or its subsidiaries.

     4.   SHARES RESERVED UNDER THE PLAN
     ------------------------------------
     The aggregate number of shares of the Company's Common Stock which may
be issued under the Plan shall not exceed an aggregate of five hundred
thousand (500,000) shares of Common Stock, which may be treasury shares or
authorized but unissued shares, or a combination of the two, subject to
adjustment as provided in Paragraph 11 hereof.  Any shares of Common Stock
which are subject to an Option which expires or terminates for any reason
(whether by voluntary surrender, lapse of time, or otherwise) and which is
unexercised as to such shares, may again be the subject of an Option under
the Plan.  The holder of an Option shall be entitled to the rights and
privileges of ownership with respect to the shares of Common Stock subject to
the Option only after actual purchase and issuance of such shares of Common
Stock pursuant to the exercise of all or part of an Option.
<PAGE>
<PAGE>
     5.   NUMBER OF SHARES TO BE GRANTED EACH ELIGIBLE DIRECTOR; EXERCISE
     ---------------------------------------------------------------------
     (a)  Automatic Grant.  On the date of the Company's 1995 Annual
Meeting of Shareholders, each eligible director of the Company whose term of
office continues after the Company's 1995 Annual Meeting of Shareholders
shall be granted an Option to purchase that number of shares of Common Stock
equal to the multiple of two thousand five hundred (2,500) and the number of
years remaining in such director's term as a director of the Company.  On the
date of each Annual Meeting of Shareholders of the Company after the
Company's 1995 Annual Meeting of Shareholders, each eligible director elected
or re-elected at such Annual Meeting shall be granted an Option to purchase
that number of shares of Common Stock equal to the multiple of two thousand
five hundred (2,500) and the number of years in the term to which such
director has been elected to the Company's Board of Directors.

     (b)  Exercise.  An Option may be exercised in whole at any time or in
part from time to time on or after the date of grant; provided, however, that
if an Option is exercised within six (6) months from the date of grant, the
Common Stock issued upon exercise of such Option may not be sold,
transferred, or otherwise disposed of by the director exercising such Option
until such six (6) month period has expired.

     (c)  Written Agreement.  Each Option shall be evidenced by an
appropriate written agreement, the form of which shall be consistent with the
terms and conditions of the Plan and applicable law, and which shall be
signed by one or more designated members of the Board of Directors or the
Committee and the non-employee director.

     (d)  Tax Status of Options.  Options granted hereunder shall not
comply with the provisions of Section 422 of Internal Revenue Code of 1986,
as amended.

     6.   OPTION PRICE; TERM
     ------------------------
     Options granted hereunder shall consist of options to purchase shares
of Common Stock at purchase prices per share of not less than 100 percent of
the fair market value per share of the shares of Common Stock on the date the
Option is granted.  For purposes of this Plan, the fair market value per
share of the Common Stock on any date shall be the closing sale price per
share of the Common Stock on the National Association of Securities Dealers
Automated Quotation/National Market System ("NASDAQ/NMS") on the business day
immediately preceding such date.  If the Common Stock ceases to be listed on
the NASDAQ/NMS, the Board of Directors or the Committee, as applicable, shall
designate an alternative method of determining the fair market value per
share of the Common Stock.  No Option will be exercisable after the
expiration of ten (10) years after the date of its grant, and each Option
will terminate no later than three (3) years after the holder thereof ceases
to be a director of the Company for any reason (but in no event later than
ten (10) years after its date of grant).

     7.   FORM OF PAYMENT
     ---------------------
     The exercise price of the Option shall be payable in whole or in part
in cash or in shares of Common Stock held by the director for more than six
(6) months.  If the director elects to pay all or a part of the exercise
price in shares of Common Stock, such director may make such payment by
delivering to the Company a number of shares already owned by the director
equal to the exercise price.  All shares of Common Stock so delivered shall
be valued at their fair market value per share on the date delivered.

     8.   TAXES
     -----------
     The Company shall be entitled to pay or withhold the amount of any tax
which it believes is required as a result of the grant or exercise of any
Option under the Plan, and the Company may defer making delivery with respect
to the Common Stock obtained pursuant to exercise of any Option until
arrangements satisfactory to it have been made with respect to any such
withholding obligations.  A director exercising an Option may, at such
director's election and subject to Paragraph 5(b), satisfy the obligation for
payment of withholding taxes either by having the Company retain a number of
shares having an aggregate fair market value per share on the date the shares
are withheld equal to the amount of the withholding tax or by delivering to
the Company shares already owned by the director having an aggregate fair
market value per share on the date the shares are delivered equal to the
amount of the withholding tax.
<PAGE>
<PAGE>
     9.   TRANSFERABILITY
     ---------------------
     Except as provided below, Options granted to a director under this Plan
shall not be transferable and during the lifetime of such director shall be
exercisable only by such director.  Notwithstanding the foregoing, a director
may transfer Options to members of the director's immediate family, to trusts
for the benefit of the director and/or such immediate family members and to
partnerships and other entities in which such director and/or such immediate
family members own all the equity interests, provided any such holder shall
be subject to all the terms and conditions of this Plan as the director,
except as otherwise expressly provided herein.  For purposes of the preceding
sentence, "immediate family" shall be a director's spouse, issue and spouses
of issue.

     A holder of an Option shall have the right to transfer the Option upon
such holder's death, either by the terms of such holder's will or under the
laws of descent and distribution, subject to the limitations set forth
herein, and all such distributees shall be subject to all terms and
conditions of this Plan to the same extent as would such holder if still
alive, except as otherwise expressly provided herein.

     10.  SECURITIES LAW
     --------------------
     Each Option agreement shall contain such representations, warranties
and other terms and conditions as shall be necessary in the opinion of
counsel to the Company to comply with all applicable federal and state
securities law.  The Company shall have the right to delay the issue or
delivery of any shares of Common Stock under the Plan until (a) the
completion of such registration or qualification of such shares under any
federal or state law, ruling or regulation as the Company shall determine to
be necessary or advisable, and (b) receipt from the holder of the Option of
such documents and information as the Company may deem necessary or
appropriate in connection with such registration or qualification.

     11.  ADJUSTMENT PROVISIONS
     ---------------------------
     If the Company shall effect a subdivision or consolidation of the
Common Stock or other capital readjustment, the payment of a stock dividend,
or other increase or reduction in the number of shares of Common Stock
outstanding, or shall effect a spin-off, split-off, or other distribution of
assets to shareholders, in any case without receiving consideration therefor
in money, services or property, the number of shares of Common Stock then
remaining subject to or available for Options, including shares as to which
Options have been granted but which remain unexercised and shares of Common
Stock reserved for Options, shall be appropriately adjusted by the Board of
Directors or the Committee, as applicable, subject to the express terms and
conditions of this Plan.

     Subject to any required action by the Company's shareholders, if the
Company shall be a party to any merger or consolidation in which the Company
is not the surviving corporation or any other transaction or series of
transactions which has a reasonable likelihood or a purpose of causing the
Common Stock to be neither listed on any national securities exchange nor
authorized to be quoted on an inter-dealer quotation system of any registered
national securities association, or registered under Section 12 of the
Exchange Act, each outstanding Option shall pertain to and apply to the
securities which a holder of the number of shares of Common Stock subject to
the Option would have been entitled to receive pursuant to such transaction,
with any such adjustment in the exercise price as the Board of Directors or
the Committee, as applicable, shall deem appropriate.  A dissolution of the
Company or a sale of all or substantially all of the assets and property of
the Company shall cause each outstanding Option to terminate forthwith;
provided, however, the holders of outstanding Options may exercise such
Options to the extent exercisable immediately prior to such dissolution or
sale.

     12.  EFFECTIVENESS OF THE PLAN
     -------------------------------
     The Plan shall become effective on February 16, 1995, subject to
approval of the Plan by the shareholders of the Company.
<PAGE>
<PAGE>
     13.  RULE 16b-3
     ----------------
     It is intended that the Plan and any award made to a person subject to
Section 16 of the Exchange Act, and any transaction or election hereunder by
any such person, shall meet all of the requirements of Rule 16b-3.  If any
provision of the Plan or any award hereunder would disqualify the Plan or
such award hereunder, or would not comply with Rule 16b-3, such provision or
award shall be construed or deemed amended to conform to Rule 16b-3.

     14.  TENURE
     ------------
     The Plan shall not be construed as conferring any rights upon any
person for continuation as a member of the Board of Directors of the Company.

     15.  TERMINATION AND AMENDMENT
     -------------------------------
     Unless the Plan shall theretofore have been terminated  as hereinafter
provided, no Option hereunder shall be granted after February 16, 2005.  The
Plan may be terminated, modified or amended by the affirmative vote of the
holders of a majority of the shares of Common Stock present, or represented,
and entitled to vote at a meeting of the shareholders of the Company.  The
Board of Directors of the Company may also terminate the Plan or make such
modifications or amendments thereof as it shall deem advisable, including
such modifications or amendments as it shall deem advisable in order to
conform to any law or regulation applicable thereto; provided, however, that
the Board of Directors may not, unless otherwise permitted under the federal
securities laws, without further approval of the shareholders of the Company,
adopt any amendment to the Plan which would cause the Plan to no longer
comply with Rule 16b-3, or any successor rule or other regulatory
requirements.  No termination, modification or amendment of the Plan may,
without the consent of the holder an Option granted hereunder, adversely
affect the rights of such holder under an outstanding Option then held by the
holder.

MW1-116334-1

<PAGE>
                                                              EXHIBIT 11
<PAGE>
                         MARSHALL & ILSLEY CORPORATION        EXHIBIT 11
                      COMPUTATION OF EARNINGS PER SHARE
                        ($000's except per share data)

                                              Three Months Ended March 31,
                                            -----------------------------
BASIC                                             1998           1997
- -----                                         ------------   ------------
Earnings:
  Net income                                $      72,931  $      54,799
  Less: Convertible preferred dividends            (1,535)        (1,065)
                                              ------------   ------------
Income available to common shareholders     $      71,396  $      53,734
                                              ============   ============
Shares:
  Weighted average number of common shares
    outstanding                                   101,692         88,838
  Less: Unvested restricted stock                    (105)          (147)
                                              ------------   ------------
Total average basic shares outstanding            101,587         88,691
                                              ============   ============

Basic earnings per share                    $        0.70  $        0.61
                                              ============   ============
DILUTED
- -------
Earnings:
  Net income                                $      72,931  $      54,799
  Add: Interest on convertible notes,
    net of income tax effect                          --             232
                                              ------------   ------------
Income available to common shareholders
  plus conversions                          $      72,931  $      55,031
                                              ============   ============
Shares:
  Weighted average number of common shares
    outstanding                                   101,692         88,838
  Additional shares relating to:
    Convertible preferred stock                     7,677          5,776
    8.5% convertible debt                             --           1,901
    Stock options, restricted stock and
        performance plans                           1,752          1,562
    Forward repurchase contracts                      --             213
                                              ------------   ------------
  Total average diluted shares outstanding        111,121         98,290
                                              ============   ============

Diluted earnings per share                  $        0.66  $        0.56
                                              ============   ============

<PAGE>
                                                               EXHIBIT 12
<PAGE>
                                                               EXHIBIT 12
                           MARSHALL & ILSLEY CORPORATION
                  COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
                                    ($000's)
<TABLE>
<CAPTION>
                                                     Three
                                                     Months
                                                      Ended                     Years Ended December 31,
                                                    March 31,   ----------------------------------------------------------
Earnings:                                              1998        1997        1996        1995        1994        1993
                                                    ----------  ----------  ----------  ----------  ----------  ----------
<S>                                              <C>         <C>         <C>         <C>         <C>         <C>
  Earnings before income taxes, extraordinary
   items and cumulative effect of changes
    in accounting principles                      $   113,932 $   370,251 $   313,141 $   299,879 $   167,803 $   264,584

  Fixed charges, excluding interest on deposits        46,508     159,977     113,515     108,683      77,074      47,905
                                                    ----------  ----------  ----------  ----------  ----------  ----------
      Earnings including fixed charges but
        excluding interest on deposits                160,440     530,228     426,656     408,562     244,877     312,489

  Interest on deposits                                134,302     429,805     360,838     331,734     255,861     272,100
                                                    ----------  ----------  ----------  ----------  ----------  ----------
      Earnings including fixed charges and
        interest on deposits                      $   294,742 $   960,033 $   787,494 $   740,296 $   500,738 $   584,589
                                                    ==========  ==========  ==========  ==========  ==========  ==========

Fixed Charges:

  Interest Expense:

    Short-term borrowings                         $    29,896 $   108,398 $    62,071 $    47,740 $    39,681 $    18,010

    Long-term borrowings                               14,072      41,420      42,808      53,709      30,537      23,088

    One-third of rental expense for all operating
      leases (the amount deemed representative
      of the interest factor)                           2,540      10,159       8,636       7,234       6,856       6,807
                                                    ----------  ----------  ----------  ----------  ----------  ----------
    Fixed charges excluding interest on deposits       46,508     159,977     113,515     108,683      77,074      47,905

    Interest on deposits                              134,302     429,805     360,838     331,734     255,861     272,100
                                                    ----------  ----------  ----------  ----------  ----------  ----------
    Fixed charges including interest on deposits  $   180,810 $   589,782 $   474,353 $   440,417 $   332,935 $   320,005
                                                    ==========  ==========  ==========  ==========  ==========  ==========
Ratio of Earnings to Fixed Charges:

  Excluding interest on deposits                         3.45 x      3.31 x      3.76 x      3.76 x      3.18 x      6.52 x

  Including interest on deposits                         1.63 x      1.63 x      1.66 x      1.68 x      1.50 x      1.83 x

</TABLE>

<TABLE> <S> <C>

<PAGE>
<ARTICLE>                                  9
<MULTIPLIER>                               1,000
       
<S>                                       <C>
<PERIOD-TYPE>                              3-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-END>                               MAR-31-1998
<CASH>                                        702,579
<INT-BEARING-DEPOSITS>                        121,880
<FED-FUNDS-SOLD>                               85,301
<TRADING-ASSETS>                               39,080
<INVESTMENTS-HELD-FOR-SALE>                 4,088,984
<INVESTMENTS-CARRYING>                        983,574
<INVESTMENTS-MARKET>                        1,006,107
<LOANS>                                    12,638,369
<ALLOWANCE>                                   210,307
<TOTAL-ASSETS>                             19,652,894
<DEPOSITS>                                 14,252,868
<SHORT-TERM>                                2,165,292
<LIABILITIES-OTHER>                           479,332
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                               0
                                       685
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