KOPP INVESTMENT ADVISORS INC
13F-HR, 1999-10-29
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                   UNITED STATES
        SECURITIES AND EXCHANGE COMMISSION
              Washington, D.C.  20549

                     Form 13F

                Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended:             09/30/99

Check here if Amendment [     ] ; Amendment Number:
     This Amendment  (Check only one.): [     ]  is a restatement.
                              [     ]  adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:             Kopp Investment Advisors, Inc.
Address:          7701 France Ave. So., Suite 500
                        Edina, MN  55435


Form 13F File Number:  28- 03099

The institutional investment manager filing this report and the person by
whom it is signed hereby represent that the person signing the report is
authorized to submit it, that all information contained herein is true, correct
and complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:       Donald B. Cornelius
Title:         Secretary/Treasurer
Phone:       (612) 841-0400

Signature, Place and Date of Signing:

                    Edina, MN              10/29/99


Report Type  (Check only one.):

[ X ]  13F HOLDINGS REPORT.  (Check here if all holdings of this
          reporting manager are reported in this report.)

[     ]  13F NOTICE.  (Check here if no holdings reported are in this
          report, and all holdings are reported by other reporting manager(s.))

[     ]  13F COMBINATION REPORT.  (Check here if a portion of the
          holdings for this reporting manager are reported in this report and
          a portion are reported by other reporting manager(s).)
<PAGE>
<PAGE>
               Form 13F SUMMARY PAGE


Report Summary:


Number of Other Included Managers:                    0

Form 13F Information Table Entry Total:        216

Form 13F Information Table Value Total:  $         3,050,715
                                   (thousands)

List of Other Included Managers:    NONE

<PAGE>
<PAGE>
<TABLE>
                                                                  FORM 13F INFORMATION TABLE
                                                           VALUE   SHARES/  SH/ PUT/ INVSTMT    OTHER          VOTING AUTHORITY
        NAME OF ISSUER          TITLE OF CLASS    CUSIP   (x$1000) PRN AMT  PRN CALL DSCRETN   MANAGERS     SOLE    SHARED    NONE
- ------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
<S>                            <C>              <C>       <C>      <C>      <C> <C>  <C>     <C>          <C>      <C>      <C>
3 Com Corporation              COM              885535104    48531  1688018 SH       OTHER                   29350           1658668
ADC Telecommunications         COM              000886101    25163   600000 SH       SOLE                   600000
                                                            158700  3784158 SH       OTHER                  257200           3526958
AT&T Co.                       COM              001957109      788    18112 SH       OTHER                     600             17512
AVT Corporation                COM              002420107    12250   400000 SH       SOLE                   400000
                                                             52733  1721900 SH       OTHER                  138200           1583700
Adept Tech Inc.                COM              006854103     4618   637000 SH       SOLE                   637000
                                                              6868   947300 SH       OTHER                  142000            805300
Advanced Fibre Communications  COM              00754A105     7120   320000 SH       SOLE                   320000
                                                             52232  2347500 SH       OTHER                   64000           2283500
Aeroflex Inc.                  COM              007768104     1205    98850 SH       OTHER                                     98850
Aetrium Inc.                   COM              00817R103     2579   370000 SH       SOLE                   370000
                                                              9963  1429681 SH       OTHER                  189000           1240681
Alcatel ADR                    COM              013904305     3984   143585 SH       OTHER                                    143585
Anadigics Inc.                 COM              032515108     8437   300000 SH       SOLE                   300000
                                                             54163  1925785 SH       OTHER                  218000           1707785
Analog Devices Inc.            COM              032654105    13711   267532 SH       OTHER                    2000            265532
Ansys Inc.                     COM              03662Q105     3950   400000 SH       SOLE                   400000
                                                              1965   199000 SH       OTHER                  140000             59000
Applied Digital Access         COM              038181103      208    40000 SH       SOLE                    40000
                                                              8153  1571550 SH       OTHER                  130000           1441550
Applied Innovation Inc.        COM              037916103      109    28500 SH       OTHER                                     28500
Applied Microsystems           COM              037935103     1559   430000 SH       SOLE                   430000
                                                               985   271600 SH       OTHER                   90000            181600
Applied Science & Tech         COM              038236105     7353   356500 SH       SOLE                   356500
                                                             22844  1107612 SH       OTHER                  123750            983862
Ardent Software Inc.           COM              039794102      539    20000 SH       SOLE                    20000
                                                              1185    44000 SH       OTHER                                     44000
Artesyn Technologies           COM              043127109     5691   300000 SH       SOLE                   300000
                                                             18810   991600 SH       OTHER                  157700            833900
Arthrocare Corp.               COM              043136100     7953   145600 SH       OTHER                                    145600
Artisan Components Inc.        COM              042923102     1725   200000 SH       SOLE                   200000
                                                              2097   243100 SH       OTHER                   15000            228100
Aspect Telecomm. Corp.         COM              045237104      419    24700 SH       OTHER                                     24700
Asyst Technologies Inc.        COM              04648X107     4290   130000 SH       SOLE                   130000
                                                              1287    39000 SH       OTHER                                     39000
BMC Software                   COM              055921100     5954    83195 SH       OTHER                   50000             33195
Biosite Diagnostic Inc.        COM              090945106    15062  1656250 SH       OTHER                  140000           1516250
Brooks Automation Inc.         COM              11434A100     2810   160000 SH       SOLE                   160000
                                                             17360   988439 SH       OTHER                  218000            770439
Burr Brown Corp.               COM              122574106     2188    55400 SH       OTHER                                     55400
Celeritek Inc.                 COM              150926103      190    31100 SH       OTHER                   15000             16100
Centigram Comms                COM              152317103     4211   385000 SH       SOLE                   385000
                                                             14293  1306769 SH       OTHER                  185000           1121769
Cholestech Corp.               COM              170393102     2614   410000 SH       SOLE                   410000
                                                              8021  1258200 SH       OTHER                  192500           1065700
Cisco System Inc.              COM              17275R102     3428    50000 SH       SOLE                    50000
                                                             17996   262475 SH       OTHER                   80698            181777
Cognos Inc. (Canada)           COM              19244C109     2606   100000 SH       SOLE                   100000
                                                             33179  1273030 SH       OTHER                   93000           1180030
Complete Business Solutions    COM              20452F107      259    18920 SH       OTHER                                     18920
Computer Network Tech Corp.    COM              204925101     2142   230000 SH       SOLE                   230000
                                                              2596   278800 SH       OTHER                   25000            253800
Conductus Inc.                 COM              206784100       43    20400 SH       OTHER                                     20400
Conexant Systems Inc.          COM              207142100     2906    40000 SH       SOLE                    40000
                                                             28274   389150 SH       OTHER                   85000            304150
Credence Systems Corp          COM              225302108     8975   200000 SH       SOLE                   200000
                                                              8813   196400 SH       OTHER                   95000            101400
Cyberoptics Corp.              COM              232517102     2249   140000 SH       SOLE                   140000
                                                             15380   957475 SH       OTHER                  152500            804975
Cylink Corp.                   COM              232565101    10429  1438498 SH       SOLE                  1438498
                                                             21877  3017550 SH       OTHER                  490000           2527550
Dallas Semiconductor           COM              235204104      240     4500 SH       OTHER                                      4500
Davox Corp.                    COM              239208101     4245   325000 SH       SOLE                   325000
                                                              6274   480300 SH       OTHER                  145000            335300
Digital Link Corp.             COM              253856108     2590   259000 SH       SOLE                   259000
                                                              5030   503025 SH       OTHER                  125000            378025
Digital Microwave              COM              253859102    48162  3070000 SH       SOLE                  3070000
                                                            132965  8475602 SH       OTHER                  860000           7615602
Dionex Corp.                   COM              254546104     1045    24450 SH       OTHER                                     24450
Documentum Inc.                COM              256159104     2162   100000 SH       SOLE                   100000
                                                             12365   571800 SH       OTHER                   15000            556800
EMS Technologies Inc.          COM              26873N108     2940   245000 SH       SOLE                   245000
                                                              9332   777696 SH       OTHER                   25000            752696
Eclipse Surgical Tech          COM              278849104     3795   230000 SH       SOLE                   230000
                                                              8103   491100 SH       OTHER                   33000            458100
Emulex Corp.                   COM              292475209      945    11000 SH       SOLE                    11000
                                                                17      200 SH       OTHER                                       200
Epicor Software Corp.          COM              29426L108     1150   200000 SH       SOLE                   200000
                                                              7652  1330810 SH       OTHER                  166500           1164310
Ericsson L M Tel Co. ADR Cl. B COM              294821400     8271   264685 SH       OTHER                    2000            262685
Ezenia!                        COM              926918103     2900   400000 SH       SOLE                   400000
                                                             10211  1408350 SH       OTHER                  211500           1196850
Flir Systems Inc.              COM              302445101      351    27140 SH       OTHER                                     27140
General Instruments            COM              370120107     8921   185850 SH       OTHER                    4000            181850
Gensym Corp.                   COM              37245R107      362   100000 SH       SOLE                   100000
                                                               312    86000 SH       OTHER                   75000             11000
Glenayre Technologies Inc.     COM              377899109       30    10000 SH       OTHER                                     10000
HNC Software Inc.              COM              40425P107     4868   122650 SH       OTHER                    2500            120150
Hi/fn Inc.                     COM              428358105     1061     9627 SH       OTHER                                      9627
Hyperion Solutions             COM              44914M104     4400   200000 SH       SOLE                   200000
                                                              1140    51815 SH       OTHER                                     51815
Image Premastering Services Lt COM              000000000       15    12500 SH       OTHER                                     12500
Imclone Systems Inc.           COM              45245W109     7647   230000 SH       SOLE                   230000
                                                             13204   397100 SH       OTHER                   40000            357100
Infinium Software Inc.         COM              45662Y109     1125   225000 SH       SOLE                   225000
                                                               393    78600 SH       OTHER                   20000             58600
Input Software Inc.            COM              457654101      100    25000 SH       SOLE                    25000
                                                              2292   573000 SH       OTHER                   44500            528500
Integrated Measurement System  COM              457923100     1147    89500 SH       OTHER                                     89500
Intel Corp.                    COM              458140100    36698   493836 SH       OTHER                   38600            455236
Inter-Tel Inc.                 COM              458372109     5017   282647 SH       OTHER                   15000            267647
Interim Services Inc.          COM              45868P100    10591   646750 SH       OTHER                   95000            551750
Intl. Business Machines        COM              459200101     4677    38650 SH       OTHER                     800             37850
Itron Inc.                     COM              465741106     3466   590000 SH       SOLE                   590000
                                                             14279  2430402 SH       OTHER                  370500           2059902
JDS Uniphase Corp.             COM              46612J101    83851   736745 SH       OTHER                   74100            662645
KLA-Tencor Corp.               COM              482480100     2658    40900 SH       OTHER                                     40900
Keane Inc.                     COM              486665102     1982    86900 SH       OTHER                    1500             85400
Keravision Inc.                COM              492061106     2600   200000 SH       SOLE                   200000
                                                              6001   461650 SH       OTHER                   45000            416650
Lam Research Corp              COM              512807108     3849    63100 SH       OTHER                   40000             23100
Larscom Inc.                   COM              51729Y108      744   340000 SH       SOLE                   340000
                                                              2126   971700 SH       OTHER                  120000            851700
Laser Power Corp.              COM              51806K104       70    23000 SH       OTHER                                     23000
Lattice Semiconductor          COM              518415104    15805   532370 SH       OTHER                                    532370
Lecroy Corp.                   COM              52324W109    13266   737000 SH       SOLE                   737000
                                                             20769  1153850 SH       OTHER                  161000            992850
Lightbridge Inc.               COM              532226107    11419   580000 SH       SOLE                   580000
                                                             31806  1615500 SH       OTHER                  268000           1347500
Lucent Technologies            COM              549463107      361     5572 SH       OTHER                                      5572
MMC Networks Inc.              COM              55308N102     3119   100000 SH       SOLE                   100000
                                                             22115   709100 SH       OTHER                   41000            668100
Macrovision Corp.              COM              555904101    21300   480000 SH       SOLE                   480000
                                                             69026  1555523 SH       OTHER                  255400           1300123
Manugistics Group Inc.         COM              565011103      292    27800 SH       OTHER                   20000              7800
Mapinfo Corp.                  COM              565105103      190    10000 SH       SOLE                    10000
                                                              3009   158350 SH       OTHER                   65000             93350
Medicis Pharmaceutical Cl A    COM              584690309    12085   424050 SH       OTHER                    4500            419550
Medtronic Inc.                 COM              585055106     4915   138205 SH       OTHER                    6000            132205
Micrel Inc.                    COM              594793101      946    21800 SH       OTHER                                     21800
Micro Component Tech           COM              59479Q100      542   140000 SH       SOLE                   140000
                                                              2793   720900 SH       OTHER                   95000            625900
Microtest Inc                  COM              594941106       36    10000 SH       OTHER                                     10000
Molecular Devices              COM              60851C107    11687   425000 SH       SOLE                   425000
                                                             40818  1484275 SH       OTHER                  179000           1305275
Motorola Inc.                  COM              620076109     5235    59490 SH       OTHER                     600             58890
National Data Corp.            COM              635621105     2600   100000 SH       SOLE                   100000
                                                             15598   599912 SH       OTHER                   52900            547012
National Instruments           COM              636518102     9505   268925 SH       OTHER                    3750            265175
Natl Computer Systems          COM              635519101     6902   180000 SH       SOLE                   180000
                                                             64873  1691875 SH       OTHER                  128500           1563375
Netmanage Inc.                 COM              641144100      856   415000 SH       SOLE                   415000
                                                              6581  3190214 SH       OTHER                  200000           2990214
Netrix Corp.                   COM              641148101      338   120000 SH       SOLE                   120000
                                                              1319   469000 SH       OTHER                   95000            374000
Network Equipment Technologies COM              641208103     1011   110000 SH       SOLE                   110000
                                                              2108   229425 SH       OTHER                                    229425
Norstan Inc.                   COM              656535101     1544   193000 SH       SOLE                   193000
                                                              3102   387700 SH       OTHER                  142500            245200
Nortel Networks Corp.          COM              656569100      510    10000 SH       SOLE                    10000
                                                             30446   596984 SH       OTHER                    1800            595184
Novellus Systems Inc           COM              670008101     2559    37950 SH       OTHER                                     37950
On Assignment Inc.             COM              682159108     6878   286600 SH       OTHER                   63800            222800
PMC-Sierra Inc.                COM              69344F106    10637   115000 SH       SOLE                   115000
                                                             17837   192830 SH       OTHER                   64000            128830
Perclose Inc.                  COM              71361C107      754    16200 SH       OTHER                                     16200
Power Integrations Inc.        COM              739276103     6142    88700 SH       OTHER                    6700             82000
Project Software & Dev         COM              74339P101    15247   285000 SH       SOLE                   285000
                                                             31936   596929 SH       OTHER                  114200            482729
Protocol Systems Inc.          COM              74371R106      140    20000 SH       SOLE                    20000
                                                              1986   283700 SH       OTHER                    4000            279700
Proxim Inc.                    COM              744284100     5290   115000 SH       SOLE                   115000
                                                             57624  1252690 SH       OTHER                  148500           1104190
RF Monolithics Inc.            COM              74955F106     1896   185000 SH       SOLE                   185000
                                                              3267   318700 SH       OTHER                   30000            288700
Rational Software Corp.        COM              75409P202    38358  1310000 SH       SOLE                  1310000
                                                            136076  4647229 SH       OTHER                  354000           4293229
Remec Inc.                     COM              759543101      588    42750 SH       OTHER                                     42750
SDL Inc.                       COM              784076101    54945   720000 SH       SOLE                   720000
                                                            253833  3326214 SH       OTHER                  340200           2986014
SPSS Inc.                      COM              78462K102      225    11600 SH       OTHER                                     11600
Sanmina Corp.                  COM              800907107      441     5700 SH       OTHER                     600              5100
Semtech Corp.                  COM              816850101     8372   228600 SH       OTHER                  160000             68600
Serena Software Inc.           COM              817492101    14042   820000 SH       OTHER                   55000            765000
Serologicals Corp.             COM              817523103      228    53750 SH       SOLE                    53750
                                                                13     3000 SH       OTHER                                      3000
Spectrian Corp.                COM              847608106    16312   750000 SH       SOLE                   750000
                                                             32046  1473400 SH       OTHER                  207000           1266400
Sprint Corp. Fon Group         COM              852061100      559    10300 SH       OTHER                                     10300
Stac Software Inc.             COM              852323203      314    75000 SH       SOLE                    75000
                                                              1245   297350 SH       OTHER                   15000            282350
Stanford Telecommunications    COM              854402104    61706  1939663 SH       OTHER                   25000           1914663
Steris Corp.                   COM              859152100    13086   951700 SH       OTHER                    5500            946200
Symbol Technologies            COM              871508107     4359   129623 SH       OTHER                   10500            119123
Synopsys Inc.                  COM              871607107     5616   100000 SH       SOLE                   100000
                                                             29994   534126 SH       OTHER                   13600            520526
Techne Corp.                   COM              878377100    13177   420000 SH       SOLE                   420000
                                                             69343  2210150 SH       OTHER                  233500           1976650
Technology Eighty (80) Inc.    COM              87868P102      169    32601 SH       OTHER                                     32601
Technology Solutions           COM              87872T108     3955   280000 SH       SOLE                   280000
                                                             20186  1429075 SH       OTHER                  157000           1272075
Tekelec                        COM              879101103     3177   230000 SH       SOLE                   230000
                                                             24867  1800271 SH       OTHER                  150000           1650271
Tellabs Inc.                   COM              879664100     5694   100000 SH       SOLE                   100000
                                                            138581  2433890 SH       OTHER                   23900           2409990
Teradyne Inc.                  COM              880770102     8996   255200 SH       OTHER                    3000            252200
US Oncology Inc.               COM              90338W103     7687   848200 SH       OTHER                    3000            845200
Unitrode Corp.                 COM              913283107     4200   100000 SH       OTHER                  100000
Vantive Corp.                  COM              922091103      869   100000 SH       SOLE                   100000
                                                              3037   349600 SH       OTHER                  125000            224600
Ventana Medical Systems        COM              92276H106     4420   260000 SH       SOLE                   260000
                                                              9017   530400 SH       OTHER                    3000            527400
Vitesse Semiconductor          COM              928497106     7684    90000 SH       SOLE                    90000
                                                             56937   666910 SH       OTHER                   62700            604210
Warner Chilcott ADR            COM              934435207      737   100000 SH       SOLE                   100000
                                                              2915   395200 SH       OTHER                   40000            355200
Wells Fargo & Co.              COM              949746101      618    15600 SH       OTHER                                     15600
Western Digital Corp.          COM              958102105       37    10100 SH       OTHER                                     10100
Williams Companies             COM              969457100     1689    44900 SH       OTHER                    1200             43700
World Access Inc.              COM              98141A101      895    80000 SH       SOLE                    80000
                                                              3365   300800 SH       OTHER                  123102            177698
Xomed Surgical Products        COM              98412V107    45656   800975 SH       OTHER                   48000            752975
Zomax Inc.                     COM              989929104    16899   653100 SH       OTHER                   23500            629600
Zygo Corp.                     COM              989855101     7416   525000 SH       SOLE                   525000
                                                             30708  2174050 SH       OTHER                  313500           1860550
</TABLE>


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