AMERICAN CAPITAL MANAGEMENT INC - Stock Holdings in 13F Filings (SEC)

Updated on March 15, 2026.

Based on 13F Filings filed with the SEC on February 17, 2026, for the 2025 Q4 period, AMERICAN CAPITAL MANAGEMENT INC held in its portfolio 68 assets valued at $2,266,464,200 (i.e. $2.27B).

The most valuable assets in the portfolio included: AEROVIRONMENT INC ($156.68M), CYBERARK SOFTWARE LTD ($152.56M), and MEDPACE HOLDINGS INC ($126.02M).

The chart below shows the top 10 valuable assets, and the table below shows the top 68 valuable assets.

You can see similar for other investment managers.

Related Topics: SEC Topic List.
Data Source: SEC.
Top Valuable Stocks in AMERICAN CAPITAL MANAGEMENT INC Portfolio
AEROVIRONMENT INC
CYBERARK SOFTWARE LTD
MEDPACE HOLDINGS INC
KRATOS DEFENSE & SECURITY SOLUTIONS INC
IDEXX LABORATORIES INC
RBC BEARINGS INC
RESMED INC
FORTINET INC
COMMVAULT SYSTEMS INC
GUIDEWIRE SOFTWARE INC
AMERICAN CAPITAL MANAGEMENT INC - Stock Holdings in 13F Filings (SEC)
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Name of Issuer No. of Shares Value ($) Class
AEROVIRONMENT INC 647710 156674572 COM
CYBERARK SOFTWARE LTD 342015 152559211 COM
MEDPACE HOLDINGS INC 224374 126019657 COM
KRATOS DEFENSE & SECURITY SOLUTIONS INC 1634493 124074364 COM
IDEXX LABORATORIES INC 181745 122955945 COM
RBC BEARINGS INC 214117 96016486 COM
RESMED INC 306956 73936492 COM
FORTINET INC 925753 73514046 COM
COMMVAULT SYSTEMS INC 533806 66917920 COM
GUIDEWIRE SOFTWARE INC 325432 65415086 COM
MANHATTAN ASSOCIATES INC 366860 63580507 COM
COGNYTE SOFTWARE LTD 6708394 63058904 COM
COSTAR GROUP INC 825340 55495862 COM
BIO-TECHNE CORP 941149 55348973 COM
LIVE RAMP HOLDINGS INC 1877756 55149694 COM
REPLIGEN CORP 335115 54911944 COM
QUALYS INC 404119 53707415 COM
NCINO INC 2027809 51993023 COM
VEEVA SYSTEMS INC 222425 49651933 COM
VARONIS SYSTEMS INC 1509039 49496479 COM
SEI INVESTMENTS CO 574819 47146654 COM
JACK HENRY & ASSOCIATES INC 251337 45863976 COM
NOVANTA INC 381866 45438235 COM
GLOBUS MEDICAL INC 486212 42451170 COM
FACTSET RESEARCH SYSTEMS INC 134951 39161431 COM
AZENTA INC 1021436 33972961 COM
NICE LTD 291494 32950482 COM
PROTO LABS INC 631311 31938023 COM
CERENCE INC 2655131 28383350 COM
TRADEWEB MARKETS INC 258715 27822211 COM
SPS COMMERCE INC 306786 27343836 COM
NEOGENOMICS INC 2324366 27334544 COM
MORNINGSTAR INC 113064 24569938 COM
AAON INC 271737 20719946 COM
STAAR SURGICAL CO 739536 17075886 COM
IPG PHOTONICS CORP 235554 16865666 COM
DEXCOM INC 248774 16511130 COM
GENTEX CORP 579892 13494087 COM
COGNEX CORP 364373 13110141 COM
TYLER TECHNOLOGIES INC 22039 10004604 COM
NEOGEN CORP 1397898 9771307 COM
SYNOPSYS INC 20436 9599198 COM
MERIT MEDICAL SYSTEMS INC 93083 8204336 COM
O'REILLY AUTOMOTIVE INC 86235 7865494 COM
HAEMONETICS CORP 74415 5964362 COM
ISHARES TRUST 78709 5898452 COM
MONOLITHIC POWER SYSTEMS INC 6488 5880464 COM
INSULET CORP 18890 5369294 COM
ICON PLC 23732 4324445 COM
KORNIT DIGITAL LTD 284628 4092951 COM
ALARM.COM HOLDINGS INC 73687 3759511 COM
Quaker Houghton 26146 3590107 COM
GRAHAM CORP 46803 3006157 COM
DORMAN PRODUCTS INC 20407 2513938 COM
FRANKLIN ELECTRIC CO INC 22000 2101660 COM
SPDR S&P 500 ETF TRUST 2535 1728667 COM
TRIMBLE INC 19000 1488650 COM
DESCARTES SYSTEMS GROUP INC (THE) 16949 1485749 COM
VSE CORP 7523 1299749 COM
HOLOGIC INC 16280 1212697 COM
ACI WORLDWIDE INC 18410 880182 COM
BLACKBAUD INC 12930 818728 COM
ZEBRA TECHNOLOGIES CORP 3300 801306 COM
APPLE INC 2800 761208 COM
JFROG LTD 10945 683625 COM
ILLUMINA INC 2220 291175 COM
MERCK & COMPANY INC 2100 221046 COM
SPDR S&P MIDCAP 400 ETF TRUST 353 212958 COM