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AMERICAN CAPITAL MANAGEMENT INC
Period ended Jun 30, 2026 · Latest filing Aug 14, 2026
These quarterly holdings are delayed and may not include all assets or short positions.
Values are from the reporting date, not current prices or purchase costs.
The same security may appear in multiple rows.
Source: SEC
Reported portfolio value
Quarter-end reported holdings; not current value or investment performance.
View reported values
- Jun 30, 2026: $2,230,305,912
More quarters will appear as history becomes available.
Top holdings
Top 10 at Jun 30, 2026. Matching entries are combined; security classes and options remain separate. Shares exclude principal amounts; option shares reflect the reported underlying amount.
View top holdings values
- PALO ALTO NETWORKS INC · COM · 697435105 · shares: $195,381,953
- FORTINET INC · COM · 34959E109 · shares: $112,124,934
- MEDPACE HOLDINGS INC · COM · 58506Q109 · shares: $111,328,821
- VARONIS SYSTEMS INC · COM · 922280102 · shares: $94,061,900
- RBC BEARINGS INC · COM · 75524B104 · shares: $92,575,252
- IDEXX LABORATORIES INC · COM · 45168D104 · shares: $85,341,188
- NCINO INC · COM · 63947X101 · shares: $83,508,263
- AEROVIRONMENT INC · COM · 008073108 · shares: $69,745,046
- BIO-TECHNE CORP · COM · 09073M104 · shares: $68,798,193
- SEI INVESTMENTS COMPANY · COM · 784117103 · shares: $65,372,280
Reported holdings
80 reported entries| Issuer | Class | CUSIP | Type | Shares / principal | Reported value (USD) |
|---|---|---|---|---|---|
| PALO ALTO NETWORKS INC | COM | 697435105 | — | 572,934 shares | $195,381,953 |
| FORTINET INC | COM | 34959E109 | — | 729,885 shares | $112,124,934 |
| MEDPACE HOLDINGS INC | COM | 58506Q109 | — | 210,217 shares | $111,328,821 |
| VARONIS SYSTEMS INC | COM | 922280102 | — | 2,241,704 shares | $94,061,900 |
| RBC BEARINGS INC | COM | 75524B104 | — | 143,737 shares | $92,575,252 |
| IDEXX LABORATORIES INC | COM | 45168D104 | — | 162,110 shares | $85,341,188 |
| NCINO INC | COM | 63947X101 | — | 5,107,539 shares | $83,508,263 |
| AEROVIRONMENT INC | COM | 008073108 | — | 422,518 shares | $69,745,046 |
| BIO-TECHNE CORP | COM | 09073M104 | — | 973,789 shares | $68,798,193 |
| SEI INVESTMENTS COMPANY | COM | 784117103 | — | 745,323 shares | $65,372,280 |
| COMMVAULT SYSTEMS INC | COM | 204166102 | — | 440,931 shares | $62,493,151 |
| MERCURY SYSTEMS INC | COM | 589378108 | — | 486,064 shares | $59,460,209 |
| NOVANTA INC | COM | 67000B104 | — | 362,271 shares | $58,774,847 |
| DYNATRACE INC | COM | 268150109 | — | 1,332,429 shares | $58,506,957 |
| COGNYTE SOFTWARE LTD | COM | M25133105 | — | 6,183,567 shares | $54,291,718 |
| GLOBUS MEDICAL INC | COM | 379577208 | — | 653,072 shares | $51,599,219 |
| KRATOS DEFENSE & SECURITY SOLUTIONS INC | COM | 50077B207 | — | 1,029,653 shares | $51,338,499 |
| MANHATTAN ASSOCIATES INC | COM | 562750109 | — | 364,696 shares | $50,783,918 |
| PROTO LABS INC | COM | 743713109 | — | 619,845 shares | $50,523,566 |
| REPLIGEN CORP | COM | 759916109 | — | 361,055 shares | $49,262,344 |
| AAON INC | COM | 000360206 | — | 375,178 shares | $47,595,081 |
| RESMED INC | COM | 761152107 | — | 228,458 shares | $44,521,895 |
| GUIDEWIRE SOFTWARE INC | COM | 40171V100 | — | 328,983 shares | $40,481,358 |
| DORMAN PRODUCTS INC | COM | 258278100 | — | 284,244 shares | $38,785,094 |
| BADGER METER INC | COM | 056525108 | — | 258,243 shares | $38,318,096 |
| VEEVA SYSTEMS INC | COM | 922475108 | — | 196,848 shares | $34,934,615 |
| NEOGENOMICS INC | COM | 64049M209 | — | 2,237,707 shares | $32,648,145 |
| TYLER TECHNOLOGIES INC | COM | 902252105 | — | 101,210 shares | $29,599,877 |
| VSE CORP | COM | 918284100 | — | 128,934 shares | $29,461,419 |
| CERENCE INC | COM | 156727109 | — | 2,407,398 shares | $27,251,745 |
| AZENTA INC | COM | 114340102 | — | 1,061,490 shares | $27,089,225 |
| STAAR SURGICAL COMPANY | COM | 852312305 | — | 846,659 shares | $24,290,647 |
| TRADEWEB MARKETS INC | COM | 892672106 | — | 238,244 shares | $23,743,397 |
| IPG PHOTONICS CORP | COM | 44980X109 | — | 197,882 shares | $23,215,516 |
| ESCO TECHNOLOGIES INC | COM | 296315104 | — | 65,312 shares | $22,861,812 |
| COSTAR GROUP INC | COM | 22160N109 | — | 725,143 shares | $20,536,050 |
| COGNEX CORP | COM | 192422103 | — | 251,103 shares | $18,184,879 |
| MORNINGSTAR INC | COM | 617700109 | — | 114,947 shares | $17,934,031 |
| DEXCOM INC | COM | 252131107 | — | 235,152 shares | $15,837,487 |
| JACK HENRY & ASSOCIATES INC | COM | 426281101 | — | 99,930 shares | $13,764,358 |
| GENTEX CORP | COM | 371901109 | — | 531,229 shares | $13,424,157 |
| NICE LTD | COM | 653656108 | — | 136,644 shares | $12,414,107 |
| FACTSET RESEARCH SYSTEMS INC | COM | 303075105 | — | 40,986 shares | $9,430,059 |
| LIVE RAMP HOLDINGS INC | COM | 53815P108 | — | 246,042 shares | $9,261,021 |
| SYNOPSYS INC | COM | 871607107 | — | 19,196 shares | $8,562,760 |
| MONOLITHIC POWER SYSTEMS INC | COM | 609839105 | — | 5,897 shares | $8,151,777 |
| O'REILLY AUTOMOTIVE INC | COM | 67103H107 | — | 86,235 shares | $7,941,381 |
| MERIT MEDICAL SYSTEMS INC | COM | 589889104 | — | 104,967 shares | $7,278,412 |
| GRAHAM CORP | COM | 384556106 | — | 52,050 shares | $6,443,270 |
| HAEMONETICS CORP | COM | 405024100 | — | 66,915 shares | $5,018,625 |
| KORNIT DIGITAL LTD | COM | M6372Q113 | — | 282,976 shares | $4,598,360 |
| INSULET CORP | COM | 45784P101 | — | 29,455 shares | $4,484,524 |
| QUAKER CHEMICAL CORP | COM | 747316107 | — | 27,279 shares | $4,333,815 |
| SPS COMMERCE INC | COM | 78463M107 | — | 73,958 shares | $4,228,179 |
| ALARM.COM HOLDINGS INC | COM | 011642105 | — | 68,544 shares | $3,202,376 |
| BALCHEM CORP | COM | 057665200 | — | 16,067 shares | $2,714,520 |
| FRANKLIN ELECTRIC CO INC | COM | 353514102 | — | 22,000 shares | $2,358,180 |
| ISHARES TRUST | COM | 464287457 | — | 25,524 shares | $2,095,776 |
| SPDR S&P 500 ETF TRUST | COM | 78462F103 | — | 2,425 shares | $1,810,917 |
| MACOM TECHNOLOGY SOLUTIONS HOLDINGS INC | COM | 55405Y100 | — | 3,626 shares | $1,379,222 |
| DESCARTES SYSTEMS GROUP INC (THE) | COM | 249906108 | — | 19,605 shares | $1,357,450 |
| JFROG LTD | COM | M6191J100 | — | 13,479 shares | $1,224,972 |
| NEOGEN CORP | COM | 640491106 | — | 133,457 shares | $1,199,778 |
| ISHARES TRUST | COM | 464288646 | — | 21,496 shares | $1,126,605 |
| QUALYS INC | COM | 74758T303 | — | 7,125 shares | $979,616 |
| TRIMBLE INC | COM | 896239100 | — | 19,000 shares | $972,420 |
| ISHARES TRUST | COM | 464287242 | — | 8,702 shares | $949,127 |
| NOVANTA INC | CONV PR | 67000B203 | — | 14,035 shares | $945,959 |
| ACI WORLDWIDE INC | COM | 004498101 | — | 18,410 shares | $925,839 |
| ZEBRA TECHNOLOGIES CORP | COM | 989207105 | — | 3,300 shares | $868,758 |
| APPLE INC | COM | 037833100 | — | 2,800 shares | $810,208 |
| ISHARES TRUST | COM | 464288588 | — | 8,186 shares | $773,741 |
| ISHARES TRUST | COM | 464288513 | — | 7,173 shares | $573,625 |
| ICON PLC | COM | G4705A100 | — | 2,823 shares | $490,383 |
| ILLUMINA INC | COM | 452327109 | — | 2,220 shares | $390,343 |
| MERCK & COMPANY INC | COM | 58933Y105 | — | 2,100 shares | $269,850 |
| VANGUARD SCOTTSDALE FUNDS | COM | 92206C680 | — | 1,949 shares | $249,102 |
| SPDR S&P MIDCAP 400 ETF TRUST | COM | 78467Y107 | — | 353 shares | $248,279 |
| VANGUARD INDEX FUNDS | COM | 922908736 | — | 2,860 shares | $246,360 |
| ISHARES TRUST | COM | 464288240 | — | 3,220 shares | $245,074 |