New Positions
24 managers initiated
Top five by reported value
Innovative Solutions and Support Inc NASDAQ NMS - GLOBAL MARKET:ISSC
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
24 new32 added32 reduced26 exited
Total Institutional Holders
88
as of 2025-12-31
Top Holder
MARSHALL WACE, LLP
$14.3M
Largest QoQ Increase
PEAK6 LLC
+318,900 sh
Largest QoQ Decrease
CITADEL ADVISORS LLC
-179,848 sh
New Positions(24)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| PEAK6 LLC | 318,900 | +318,900 | $6.0M | +$6.0M | — |
| STIFEL FINANCIAL CORP | 291,945 | +291,945 | $5.5M | +$5.5M | — |
| Qube Research & Technologies Ltd | 80,975 | +80,975 | $1.5M | +$1.5M | — |
| Hennion & Walsh Asset Management, Inc. | 64,599 | +64,599 | $1.2M | +$1.2M | — |
| EAM Investors, LLC | 51,581 | +51,581 | $976.9K | +$976.9K | — |
| Point72 Asset Management, L.P. | 49,475 | +49,475 | $937.1K | +$937.1K | — |
| 683 Capital Management, LLC | 45,000 | +45,000 | $852.3K | +$852.3K | — |
| OMERS ADMINISTRATION Corp | 43,100 | +43,100 | $816.3K | +$816.3K | — |
| SEI INVESTMENTS CO | 31,399 | +31,399 | $594.7K | +$594.7K | — |
| Centiva Capital, LP | 27,360 | +27,360 | $518.2K | +$518.2K | — |
| Bank of New York Mellon Corp | 26,717 | +26,717 | $506.0K | +$506.0K | — |
| Hudson Bay Capital Management LP | 23,588 | +23,588 | $446.8K | +$446.8K | — |
| MANGROVE PARTNERS | 18,275 | +18,275 | $346.1K | +$346.1K | — |
| PharVision Advisers, LLC | 17,274 | +17,274 | $327.2K | +$327.2K | — |
| Quadrature Capital Ltd | 16,399 | +16,399 | $310.6K | +$310.6K | — |
| Graham Capital Management, L.P. | 13,825 | +13,825 | $261.8K | +$261.8K | — |
| BNP PARIBAS ARBITRAGE, SNC | 6,950 | +6,950 | $131.6K | +$131.6K | — |
| CANADA PENSION PLAN INVESTMENT BOARD | 6,300 | +6,300 | $119.3K | +$119.3K | — |
| Global Retirement Partners, LLC | 1,886 | +1,886 | $35.7K | +$35.7K | — |
| AdvisorNet Financial, Inc | 400 | +400 | $7.6K | +$7.6K | — |
| Allworth Financial LP | 21 | +21 | $263 | +$263 | — |
| JONES FINANCIAL COMPANIES LLLP | 4 | +4 | $76 | +$76 | — |
| Covestor Ltd | 649 | +649 | $12 | +$12 | — |
| Motiv8 Investments LLC | 250 | +250 | $5 | +$5 | — |
Added To(32)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| MARSHALL WACE, LLP | 754,488 | +275,286 | $14.3M | +$8.3M | 57.4% |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 595,174 | +288,479 | $11.3M | +$7.4M | 94.1% |
| VANGUARD GROUP INC | 696,748 | +140,560 | $13.2M | +$6.2M | 25.3% |
| MILLENNIUM MANAGEMENT LLC | 280,579 | +259,561 | $5.3M | +$5.1M | 1234.9% |
| MORGAN STANLEY | 671,528 | +30,119 | $12.7M | +$4.7M | 4.7% |
| JANE STREET GROUP, LLC | 192,822 | +172,868 | $3.7M | +$3.4M | 866.3% |
| WealthTrust Axiom LLC | 386,370 | +62,712 | $7.3M | +$3.3M | 19.4% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 316,645 | +39,026 | $6.0M | +$2.5M | 14.1% |
| DIMENSIONAL FUND ADVISORS LP | 377,833 | +5,525 | $7.2M | +$2.5M | 1.5% |
| Man Group plc | 154,716 | +90,259 | $2.9M | +$2.1M | 140.0% |
| GOLDMAN SACHS GROUP INC | 118,559 | +103,806 | $2.2M | +$2.1M | 703.6% |
| Palisades Investment Partners, LLC | 239,276 | +4,953 | $4.5M | +$1.6M | 2.1% |
| UBS Group AG | 86,932 | +55,097 | $1.6M | +$1.2M | 173.1% |
| Connor, Clark & Lunn Investment Management Ltd. | 165,084 | +11,106 | $3.1M | +$1.2M | 7.2% |
| GABELLI FUNDS LLC | 109,813 | +22,313 | $2.1M | +$987.0K | 25.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 138,932 | +6,037 | $2.6M | +$971.8K | 4.5% |
| Mesirow Financial Investment Management, Inc. | 90,199 | +30,259 | $1.7M | +$959.7K | 50.5% |
| Russell Investments Group, Ltd. | 60,479 | +13,699 | $1.1M | +$561.2K | 29.3% |
| BARCLAYS PLC | 29,335 | +25,363 | $555.6K | +$506.0K | 638.5% |
| STATE STREET CORP | 64,193 | +5,600 | $1.2M | +$484.0K | 9.6% |
| TWO SIGMA INVESTMENTS, LP | 48,138 | +4,501 | $911.7K | +$366.7K | 10.3% |
| XTX Topco Ltd | 40,166 | +8,508 | $760.7K | +$365.3K | 26.9% |
| NORTHERN TRUST CORP | 43,748 | +3,793 | $828.6K | +$329.5K | 9.5% |
| HighTower Advisors, LLC | 49,167 | +80 | $931.2K | +$318.1K | 0.2% |
| AMERICAN CENTURY COMPANIES INC | 21,118 | +6,145 | $400.0K | +$213.0K | 41.0% |
| BANK OF AMERICA CORP /DE/ | 14,770 | +5,657 | $279.7K | +$165.9K | 62.1% |
| CITIGROUP INC | 8,331 | +8,315 | $157.8K | +$157.6K | 51968.8% |
| Integrated Quantitative Investments LLC | 18,193 | +1,556 | $344.6K | +$136.8K | 9.3% |
| Squarepoint Ops LLC | 16,093 | +1,672 | $304.8K | +$124.7K | 11.6% |
| Caitong International Asset Management Co., Ltd | 1,441 | +1,422 | $27.3K | +$27.1K | 7484.2% |
| Royal Bank of Canada | 1,277 | +801 | $24.0K | +$21.0K | 168.3% |
| Quarry LP | 1,275 | +289 | $24.1K | +$11.8K | 29.3% |
Reduced(32)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| BlackRock, Inc. | 343,761 | -17,307 | $6.5M | +$2.0M | -4.8% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 225,101 | -6,267 | $4.3M | +$1.4M | -2.7% |
| CITADEL ADVISORS LLC | 171,030 | -179,848 | $3.2M | -$1.1M | -51.3% |
| RENAISSANCE TECHNOLOGIES LLC | 269,093 | -57,866 | $5.1M | +$1.0M | -17.7% |
| Pekin Hardy Strauss, Inc. | 139,700 | 0 | $2.6M | +$901.1K | 0.0% |
| RAYMOND JAMES FINANCIAL INC | 163,520 | -12,607 | $3.1M | +$897.2K | -7.2% |
| ISTHMUS PARTNERS, LLC | 170,995 | -18,759 | $3.2M | +$868.6K | -9.9% |
| LPL Financial LLC | 16,976 | -77,190 | $321.5K | -$854.6K | -82.0% |
| GAMCO INVESTORS, INC. ET AL | 126,500 | -2,000 | $2.4M | +$790.9K | -1.6% |
| Teton Advisors, LLC | 130,000 | -6,700 | $2.5M | +$754.8K | -4.9% |
| LAZARD ASSET MANAGEMENT LLC | 102,619 | -7,210 | $1.9M | +$571.8K | -6.6% |
| NEW YORK STATE COMMON RETIREMENT FUND | 71,180 | 0 | $1.3M | +$459.1K | 0.0% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 28,500 | 0 | $539.8K | +$183.8K | 0.0% |
| PANAGORA ASSET MANAGEMENT INC | 20,916 | 0 | $396.1K | +$134.9K | 0.0% |
| NewEdge Advisors, LLC | 20,400 | 0 | $386.4K | +$131.6K | 0.0% |
| JAMES INVESTMENT RESEARCH INC | 20,400 | 0 | $386.4K | +$131.6K | 0.0% |
| Wharton Business Group, LLC | 19,395 | 0 | $367.3K | +$125.1K | 0.0% |
| AMERIPRISE FINANCIAL INC | 16,981 | 0 | $321.6K | +$109.5K | 0.0% |
| Meixler Investment Management, Ltd. | 16,575 | -250 | $313.9K | +$103.8K | -1.5% |
| WELLS FARGO & COMPANY/MN | 1,000 | -8,700 | $18.9K | -$102.2K | -89.7% |
| ADVISOR GROUP HOLDINGS, INC. | 9,091 | -11,931 | $172.2K | -$92.2K | -56.8% |
| GREAT VALLEY ADVISOR GROUP, INC. | 13,228 | -178 | $250.6K | +$83.6K | -1.3% |
| INTEGRITY ALLIANCE, LLC. | 10,150 | 0 | $192.2K | +$65.5K | 0.0% |
| RITHOLTZ WEALTH MANAGEMENT | 14,467 | -2,865 | $274.0K | +$57.5K | -16.5% |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 24,218 | -8,009 | $458.7K | +$56.2K | -24.9% |
| GROUP ONE TRADING, L.P. | 5,377 | -1,549 | $101.8K | +$15.3K | -22.4% |
| PNC Financial Services Group, Inc. | 2,400 | -400 | $45.5K | +$10.5K | -14.3% |
| J.W. COLE ADVISORS, INC. | 12,620 | -7,000 | $239.0K | -$6.0K | -35.7% |
| US BANCORP \DE\ | 383 | 0 | $7.3K | +$2.5K | 0.0% |
| SBI Securities Co., Ltd. | 26 | -203 | $492 | -$2.4K | -88.6% |
| Sunbelt Securities, Inc. | 298 | 0 | $5.6K | +$1.9K | 0.0% |
| Spire Wealth Management | 100 | 0 | $1.9K | +$645 | 0.0% |
Sold Out(26)
Top Holders by reported value
Ranked by the dollar value reported on the latest Form 13F. Share counts reflect long positions as of 2025-12-31.
| Manager | Shares | $ Value | Δ Shares | QoQ % |
|---|---|---|---|---|
| MARSHALL WACE, LLP | 754,488 | $14.3M | +275,286 | 57.4% |
| VANGUARD GROUP INC | 696,748 | $13.2M | +140,560 | 25.3% |
| MORGAN STANLEY | 671,528 | $12.7M | +30,119 | 4.7% |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 595,174 | $11.3M | +288,479 | 94.1% |
| WealthTrust Axiom LLC | 386,370 | $7.3M | +62,712 | 19.4% |
| DIMENSIONAL FUND ADVISORS LP | 377,833 | $7.2M | +5,525 | 1.5% |
| BlackRock, Inc. | 343,761 | $6.5M | -17,307 | -4.8% |
| PEAK6 LLC | 318,900 | $6.0M | +318,900 | — |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 316,645 | $6.0M | +39,026 | 14.1% |
| STIFEL FINANCIAL CORP | 291,945 | $5.5M | +291,945 | — |
| MILLENNIUM MANAGEMENT LLC | 280,579 | $5.3M | +259,561 | 1234.9% |
| RENAISSANCE TECHNOLOGIES LLC | 269,093 | $5.1M | -57,866 | -17.7% |
| Palisades Investment Partners, LLC | 239,276 | $4.5M | +4,953 | 2.1% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 225,101 | $4.3M | -6,267 | -2.7% |
| JANE STREET GROUP, LLC | 192,822 | $3.7M | +172,868 | 866.3% |
| CITADEL ADVISORS LLC | 171,030 | $3.2M | -179,848 | -51.3% |
| ISTHMUS PARTNERS, LLC | 170,995 | $3.2M | -18,759 | -9.9% |
| Connor, Clark & Lunn Investment Management Ltd. | 165,084 | $3.1M | +11,106 | 7.2% |
| RAYMOND JAMES FINANCIAL INC | 163,520 | $3.1M | -12,607 | -7.2% |
| Man Group plc | 154,716 | $2.9M | +90,259 | 140.0% |
New & Closed Positions this quarter
Closed Positions
26 managers exited
Top five by prior-quarter value
Methodology
Form 13F is the SEC's quarterly disclosure for institutional investment managers exercising discretion over $100 million or more in qualifying U.S. equity securities. Managers must file within 45 days of each calendar quarter end, which is why holdings shown here reflect a snapshot at the period date — not real-time positioning.
Quarter-over-quarter deltas compare each manager's most recently reported share count for ISSC against its prior-quarter count. New positions are entries where the prior count was zero; closed positions are entries where the current count is zero. Amendments (13F-HR/A) replace prior filings for the same period.
Source: SEC EDGAR Form 13F (XML information tables). Dollar values are as reported by the manager and may use mid-quarter pricing conventions. CUSIP-to-ticker resolution is best-effort.