UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F
FORM 13F COVER PAGE
Report for the Calendar Year or Quarter Ended: March 31, 2000
Institutional Investment Manager Filing this Report:
Name: Cohen, Klingenstein & Marks Incorporated
Address: 2112 Broadway
Suite 417
New York, NY 10023
13F File Number: 801-17119
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: George M. Cohen
Title: Princial
Phone: 212-799-4880
Signature, Place, and Date of Signing:
George M. Cohen New York, New York April 15, 2000
Report Type (Check only one.):
[ X] 13F Holdings Report
[ ] 13F Notice
[ ] 13F Combination Report
List of Other Managers Reporting for this Manager:
None
I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE
ACT OF 1934.
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FORM 13F SUMMARY PAGE
Report Summary:
Number of Other Included Managers: 0
Form 13F Information Table Entry Total: 97,971
Form 13F Information Table Value Total: $3,780,630
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Form 13F Information Table
Value Shares/ Investment Voting
Name of Issuer Title of Cusip (x$1000) Discretion Authority
Abbott Labs com 002824100106,108,223,015,509 sole sole
Abgenix com 00339B107 477,913 3,460 sole sole
Adaptec Inc. com 00651F108 359,213 9,300 sole sole
ADC Telecomm. com 000886101 557,068 10,340 sole sole
Adobe Systems Inc com 00724F101 712,400 6,400 sole sole
Advanced Micro De com 007903107 457,927 8,025 sole sole
Affymetrix Inc. com 00826T108 512,109 3,450 sole sole
Alkermes com 01642T108 370,000 4,000 sole sole
Allstate Corp. com 020002101 754,856 31,700 sole sole
ALLTEL Corp. com 020039103101,573,491,605,905 sole sole
Amerada Hess Corp com 023551104 333,336 5,158 sole sole
America Online com 02364J104 252,216 3,740 sole sole
American Express com 025816109 3,365,988 22,600 sole sole
American Home Pro com 026609107107,320,581,996,662 sole sole
American Int'l Gr com 02687410715,660,197 143,016 sole sole
Americredit Corp. com 03060R101 450,225 27,600 sole sole
Amgen Inc. com 031162100145,731,192,374,439 sole sole
AT&T Corp. com 001957109 1,527,758 27,130 sole sole
AT&T Lbty Media A com 001957208 1,522,908 25,676 sole sole
Aurora Bioscience com 051920106 219,908 5,380 sole sole
Autonation Inc. com 05329W102 198,438 25,000 sole sole
Avant Immuno. Inc com 053491106 318,250 33,500 sole sole
Avon Products Inc com 054303102103,907,813,552,404 sole sole
Bank of Amer. Cor com 060505104 2,932,829 55,930 sole sole
Banta Corp. com 066821109 248,063 13,500 sole sole
Bea Systems com 073325102 419,705 5,720 sole sole
Becton, Dickinson com 07588710996,645,4443,672,986 sole sole
Bed, Bath & Beyon com 075896100133,305,203,385,529 sole sole
Berkshire Hathawa com 084670207 1,250,340 687 sole sole
Biogen Inc. com 090597105 234,780 3,360 sole sole
BMC Software com 055921100106,793,822,162,913 sole sole
Boston Scientific com 101137107100,988,214,738,450 sole sole
BP Amoco PLC com 055622104 281,799 5,292 sole sole
Bristol-Myers Squ com 110122108106,688,501,839,457 sole sole
Burlington N Sant com 12189T104 573,300 25,200 sole sole
Capital One Finan com 14040H105 426,644 8,900 sole sole
Catalytica com 148885106 553,375 38,000 sole sole
Cisco Systems Inc com 17275R102 776,218 10,040 sole sole
Clear Channel Com com 184502102 400,563 5,800 sole sole
CMG Investments com 125750109 339,938 3,000 sole sole
CNET Inc. com 125945105 328,455 6,480 sole sole
Coca-Cola Co. com 191216100100,083,932,132,281 sole sole
Cognex Corp. com 192422103 431,503 7,480 sole sole
Comcast Cl A SPL com 200300200 1,327,709 30,610 sole sole
Comcast Corp. Cl com 200300101 293,288 7,110 sole sole
Computer Assoc. I com 204912109114,598,741,936,198 sole sole
Computer Sciences com 205363104 242,123 3,060 sole sole
Compuware Corp com 20563810990,041,2404,274,955 sole sole
Conseco, Inc. com 20846410782,831,9427,242,137 sole sole
Corn Products Int com 219023108 397,031 16,500 sole sole
Delta and Pine La com 247357106 702,152 35,552 sole sole
Dollar General com 256669102113,808,314,234,728 sole sole
Donnelley (R.R.) com 257867101 670,000 32,000 sole sole
Eclipsys Corp. com 278856109 213,125 11,000 sole sole
Electronic Arts com 285512109 242,038 3,400 sole sole
Eli Lilly com 532457108 4,070,625 65,000 sole sole
EMC Corp. com 268648102156,736,441,243,940 sole sole
Expeditors Intl. com 302130109 612,150 15,400 sole sole
Extended Stay Ame com 30224P101 397,500 53,000 sole sole
Fannie Mae com 313586109113,619,412,008,741 sole sole
Federated Dept. S com 31410H101 490,100 11,600 sole sole
Finova Group com 317928109 228,650 13,600 sole sole
Fox Entertainment com 35138T107 473,013 15,800 sole sole
Franklin Resource com 354613101104,058,503,112,030 sole sole
Fritz Cos Inc. com 358846103 430,313 42,500 sole sole
Gannett Co. Inc. com 364730101 2,653,138 37,700 sole sole
Gap Inc. com 364760108122,391,102,457,036 sole sole
Gateway Inc. com 367833100 498,641 9,400 sole sole
General Electric com 369604103 1,995,891 12,825 sole sole
Gilat Satellite com 2369464 304,850 2,600 sole sole
Gilead Sciences I com 375558103 237,656 3,750 sole sole
Glaxo Wellcome AD com 37733W105 4,074,919 71,100 sole sole
Guidant Corp com 401698105 306,150 5,200 sole sole
Healthsouth com 421924101 312,813 55,000 sole sole
HNC Software Inc. com 40425P107 356,709 4,950 sole sole
Immunex Corp. com 452528102 437,719 6,900 sole sole
IMS Health Inc. com 449934108 299,794 17,700 sole sole
Incyte Pharm. com 45337c102 375,981 4,300 sole sole
Infocure com 45665A108 403,100 23,200 sole sole
Intel Corp. com 458140100156,021,761,182,543 sole sole
Intermedia Comm. com 458801107 343,985 7,120 sole sole
Jabil Circuit Inc com 466313103 470,560 10,880 sole sole
JDS Uniphase Corp com 46612j101 776,423 6,440 sole sole
JLK Direct Dist. com 46621C105 95,813 10,500 sole sole
Johnson & Johnson com 478160104 1,180,200 16,800 sole sole
Kansas City So. I com 485170104 3,300,000 38,400 sole sole
Kohls Corp. com 500255104 284,438 2,775 sole sole
LAM Research Corp com 512807108 243,338 5,400 sole sole
Legato Systems In com 524651106 390,915 8,760 sole sole
Lincare Holdings com 532791100 478,403 16,860 sole sole
Maxim Integrated com 57772K101 284,250 4,000 sole sole
MBNA Corp. com 55262L100100,004,563,921,748 sole sole
McDonald's Corp. com 580135101106,983,502,862,435 sole sole
MCI Worldcom Inc. com 55268B106107,625,172,375,176 sole sole
McKessonHBOC com 58155Q103107,350,295,111,919 sole sole
Memberworks Inc. com 586002107 308,963 7,700 sole sole
Merck & Co. com 589331107106,051,281,707,063 sole sole
Mercury Interacti com 589405109 530,975 6,700 sole sole
Mid Atlantic Medi com 59523C107 368,150 39,800 sole sole
Monsanto Company com 61166210759,247,5061,150,437 sole sole
Mutual Risk Mgmt. com 628351108 520,000 26,000 sole sole
National Computer com 63519101 416,150 8,200 sole sole
Network Appliance com 64120L104 926,800 11,200 sole sole
Neurocrine Biosc. com 64125C109 279,000 12,000 sole sole
Nextlink Comm. com 65333h707 816,338 6,600 sole sole
Nordstrom Inc. com 655664100 1,085,541 36,798 sole sole
Oracle Corp. com 68389X105 1,182,452 15,148 sole sole
Parametric Tech. com 699173100110,194,895,231,805 sole sole
PepsiCo Inc. com 713448108 3,874,613 111,100 sole sole
Pharmacia & Upjoh com 71694110972,305,8881,215,225 sole sole
Philip Morris com 718154107 551,363 26,100 sole sole
Pogo Producing com 730448107 1,156,296 40,483 sole sole
Primedia Inc. com 74157k101 480,000 15,000 sole sole
Providian Financi com 74406A102110,838,001,279,515 sole sole
Psinet Inc. com 74437C101 326,550 9,600 sole sole
QRS Corp. com 74726x105 361,200 4,800 sole sole
QuadraMed Corp. com 74730W101 431,250 75,000 sole sole
Qualcomm Inc. com 747525103 749,549 5,020 sole sole
Quintile Trans. com 748767100 240,837 14,115 sole sole
Rational Software com 75409P202 550,800 7,200 sole sole
Safeguard Scienti com 786449108 1,444,032 20,928 sole sole
SBC Communication com 78387G103 321,961 7,643 sole sole
Scientific-Atlant com 808655104 657,800 10,400 sole sole
Sealed Air Corp. com 81211K100 1,976,975 36,400 sole sole
Shared Medical Sy com 819486101 427,969 8,250 sole sole
Sprint PCS Grp. com 852061506 2,316,080 35,360 sole sole
Storage Technolog com 862111200 215,156 13,500 sole sole
Stryker Corp. com 863667101 237,150 3,400 sole sole
Sunrise Assist. L com 86768K106 361,725 27,300 sole sole
Sylvan Learning S com 871399101 398,597 25,010 sole sole
Tandy Corp. com 875382103108,858,752,145,000 sole sole
Telefonos Mexico com 879403780 652,925 9,800 sole sole
Telephone & Data com 879433100 555,000 5,000 sole sole
Tellabs Inc. com 879664100106,627,311,692,917 sole sole
Time Warner Inc. com 887315109 1,325,000 13,250 sole sole
Tricon Global Res com 895953107 291,056 9,370 sole sole
U.S. Bancorp com 902973106103,601,424,736,065 sole sole
Univisions Comm. com 914906102 648,620 5,740 sole sole
Vertex Pharma. com 92532F100 313,644 6,700 sole sole
Vitesse Semicon. com 928497106 808,500 8,400 sole sole
Walt Disney Co. com 25468710610,688,535 259,116 sole sole
Washington Post ' com 939640108 2,677,950 4,950 sole sole
Waters Corp. com 941848103 640,080 6,720 sole sole
Wellpoint Health com 94973H108 408,769 5,850 sole sole
Western Digital com 958102105 89,250 12,000 sole sole
Xerox Corp. com 984121103104,698,024,026,847 sole sole
Xilinx Inc. com 983919101 751,938 9,080 sole sole
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