New Positions
13 managers initiated
Top five by reported value
- 683 Capital Management, LLC$878.3K
- GOLDMAN SACHS GROUP INC$283.6K
- OMERS ADMINISTRATION Corp$176.6K
- MILLENNIUM MANAGEMENT LLC$163.8K
- SUSQUEHANNA INTERNATIONAL GROUP, LLP$153.0K
Armata Pharmaceuticals Inc NYSE MKT LLC:ARMP
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
13 new11 added12 reduced4 exited
Total Institutional Holders
36
as of 2025-12-31
Top Holder
VANGUARD GROUP INC
$2.2M
Largest QoQ Increase
683 Capital Management, LLC
+139,860 sh
Largest QoQ Decrease
GROUP ONE TRADING, L.P.
-3,000 sh
New Positions(13)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| 683 Capital Management, LLC | 139,860 | +139,860 | $878.3K | +$878.3K | — |
| GOLDMAN SACHS GROUP INC | 45,163 | +45,163 | $283.6K | +$283.6K | — |
| OMERS ADMINISTRATION Corp | 28,125 | +28,125 | $176.6K | +$176.6K | — |
| MILLENNIUM MANAGEMENT LLC | 26,088 | +26,088 | $163.8K | +$163.8K | — |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 24,360 | +24,360 | $153.0K | +$153.0K | — |
| Qube Research & Technologies Ltd | 23,356 | +23,356 | $146.7K | +$146.7K | — |
| JANE STREET GROUP, LLC | 17,153 | +17,153 | $107.7K | +$107.7K | — |
| CITADEL ADVISORS LLC | 10,786 | +10,786 | $67.7K | +$67.7K | — |
| Dauntless Investment Group, LLC | 6,131 | +6,131 | $38.5K | +$38.5K | — |
| Cornerstone National Bank & Trust Co | 1,428 | +1,428 | $9.0K | +$9.0K | — |
| BNP PARIBAS ARBITRAGE, SNC | 710 | +710 | $4.5K | +$4.5K | — |
| WHITTIER TRUST CO | 100 | +100 | $587 | +$587 | — |
| Geneos Wealth Management Inc. | 92 | +92 | $578 | +$578 | — |
Added To(11)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 357,649 | +60,611 | $2.2M | +$1.4M | 20.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 109,888 | +5,342 | $690.3K | +$378.6K | 5.1% |
| BlackRock, Inc. | 72,764 | +46,098 | $457.0K | +$377.5K | 172.9% |
| RENAISSANCE TECHNOLOGIES LLC | 68,496 | +27,200 | $430.2K | +$307.1K | 65.9% |
| STATE STREET CORP | 50,800 | +10,500 | $319.0K | +$198.9K | 26.1% |
| SeaCrest Wealth Management, LLC | 40,988 | +6,034 | $273.8K | +$161.2K | 17.3% |
| NORTHERN TRUST CORP | 24,646 | +5,373 | $154.8K | +$97.3K | 27.9% |
| BANK OF AMERICA CORP /DE/ | 3,516 | +3,509 | $22.1K | +$22.1K | 50128.6% |
| MORGAN STANLEY | 2,269 | +2,267 | $14.3K | +$14.2K | 113350.0% |
| Tower Research Capital LLC (TRC) | 1,604 | +1,249 | $10.1K | +$9.0K | 351.8% |
| UBS Group AG | 1,021 | +977 | $6.4K | +$6.3K | 2220.4% |
Reduced(12)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| EDGEWOOD MANAGEMENT LLC | 100,000 | 0 | $628.0K | +$330.0K | 0.0% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 44,682 | 0 | $280.6K | +$147.5K | 0.0% |
| GSB Wealth Management, LLC | 30,000 | 0 | $188.4K | +$99.0K | 0.0% |
| CAPTRUST FINANCIAL ADVISORS | 13,140 | 0 | $82.5K | +$43.4K | 0.0% |
| Measured Wealth Private Client Group, LLC | 1,000 | 0 | $6.3K | +$3.3K | 0.0% |
| Trifecta Capital Advisors, LLC | 714 | 0 | $4.5K | +$2.4K | 0.0% |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 571 | 0 | $3.6K | +$1.9K | 0.0% |
| ADVISOR GROUP HOLDINGS, INC. | 357 | -100 | $2.2K | +$880 | -21.9% |
| MAI Capital Management | 71 | 0 | $446 | +$234 | 0.0% |
| Team Financial Group, LLC | 71 | 0 | $446 | +$234 | 0.0% |
| SBI Securities Co., Ltd. | 3 | 0 | $19 | +$10 | 0.0% |
| WELLS FARGO & COMPANY/MN | 1 | 0 | $3 | +$2 | 0.0% |
Sold Out(4)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| GROUP ONE TRADING, L.P. | 0 | -3,000 | $0 | -$8.9K | — |
| SALEM INVESTMENT COUNSELORS INC | 0 | -100 | $0 | -$298 | — |
| JPMORGAN CHASE & CO | 0 | -24 | $0 | -$72 | — |
| BARCLAYS PLC | 0 | -6 | $0 | -$18 | — |
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 % |
|---|---|---|---|---|
| VANGUARD GROUP INC | 357,649 | $2.2M | +60,611 | 20.4% |
| 683 Capital Management, LLC | 139,860 | $878.3K | +139,860 | — |
| GEODE CAPITAL MANAGEMENT, LLC | 109,888 | $690.3K | +5,342 | 5.1% |
| EDGEWOOD MANAGEMENT LLC | 100,000 | $628.0K | 0 | 0.0% |
| BlackRock, Inc. | 72,764 | $457.0K | +46,098 | 172.9% |
| RENAISSANCE TECHNOLOGIES LLC | 68,496 | $430.2K | +27,200 | 65.9% |
| STATE STREET CORP | 50,800 | $319.0K | +10,500 | 26.1% |
| GOLDMAN SACHS GROUP INC | 45,163 | $283.6K | +45,163 | — |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 44,682 | $280.6K | 0 | 0.0% |
| SeaCrest Wealth Management, LLC | 40,988 | $273.8K | +6,034 | 17.3% |
| GSB Wealth Management, LLC | 30,000 | $188.4K | 0 | 0.0% |
| OMERS ADMINISTRATION Corp | 28,125 | $176.6K | +28,125 | — |
| MILLENNIUM MANAGEMENT LLC | 26,088 | $163.8K | +26,088 | — |
| NORTHERN TRUST CORP | 24,646 | $154.8K | +5,373 | 27.9% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 24,360 | $153.0K | +24,360 | — |
| Qube Research & Technologies Ltd | 23,356 | $146.7K | +23,356 | — |
| JANE STREET GROUP, LLC | 17,153 | $107.7K | +17,153 | — |
| CAPTRUST FINANCIAL ADVISORS | 13,140 | $82.5K | 0 | 0.0% |
| CITADEL ADVISORS LLC | 10,786 | $67.7K | +10,786 | — |
| Dauntless Investment Group, LLC | 6,131 | $38.5K | +6,131 | — |
New & Closed Positions this quarter
Closed Positions
4 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 ARMP 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.