New Positions
4 managers initiated
Top five by reported value
XBiotech Inc NASDAQ NMS - GLOBAL MARKET:XBIT
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
4 new9 added29 reduced11 exited
Total Institutional Holders
42
as of 2025-12-31
Top Holder
RBF Capital, LLC
$948.8K
Largest QoQ Increase
RBF Capital, LLC
+197,002 sh
Largest QoQ Decrease
VANGUARD GROUP INC
-519,683 sh
New Positions(4)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| AMERIPRISE FINANCIAL INC | 186,796 | +186,796 | $446.4K | +$446.4K | — |
| Persistent Asset Partners Ltd | 13,565 | +13,565 | $32.4K | +$32.4K | — |
| Pinnacle Financial Partners, Inc. | 11,796 | +11,796 | $28.2K | +$28.2K | — |
| TWO SIGMA SECURITIES, LLC | 10,378 | +10,378 | $24.8K | +$24.8K | — |
Added To(9)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| RBF Capital, LLC | 397,002 | +197,002 | $948.8K | +$416.8K | 98.5% |
| MORGAN STANLEY | 163,419 | +41,966 | $390.6K | +$67.5K | 34.5% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 89,547 | +30,000 | $214.0K | +$55.6K | 50.4% |
| JANE STREET GROUP, LLC | 69,738 | +13,971 | $166.7K | +$18.3K | 25.1% |
| Squarepoint Ops LLC | 64,004 | +1,845 | $153.0K | -$12.4K | 3.0% |
| XTX Topco Ltd | 21,703 | +6,647 | $51.9K | +$11.8K | 44.1% |
| BNP PARIBAS ARBITRAGE, SNC | 26,864 | +6,254 | $64.2K | +$9.4K | 30.3% |
| STATE STREET CORP | 73,006 | +5,700 | $174.5K | -$4.5K | 8.5% |
| FMR LLC | 450 | +140 | $1.1K | +$251 | 45.2% |
Reduced(29)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 299,556 | -519,683 | $715.9K | -$1.5M | -63.4% |
| MILLENNIUM MANAGEMENT LLC | 135,438 | -280,906 | $323.7K | -$783.8K | -67.5% |
| BlackRock, Inc. | 288,632 | -13,754 | $689.8K | -$114.5K | -4.5% |
| CITADEL ADVISORS LLC | 18,400 | -24,416 | $44.0K | -$69.9K | -57.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 221,121 | -742 | $528.7K | -$61.7K | -0.3% |
| DIMENSIONAL FUND ADVISORS LP | 50,695 | -13,621 | $121.0K | -$50.1K | -21.2% |
| BANK OF AMERICA CORP /DE/ | 35,895 | -11,494 | $85.8K | -$40.3K | -24.3% |
| NORTHERN TRUST CORP | 76,439 | -5,185 | $182.7K | -$34.4K | -6.3% |
| Qube Research & Technologies Ltd | 20,611 | -9,706 | $49.3K | -$31.4K | -32.0% |
| GOLDMAN SACHS GROUP INC | 16,831 | -8,171 | $40.2K | -$26.3K | -32.7% |
| Connor, Clark & Lunn Investment Management Ltd. | 30,229 | -5,800 | $72.2K | -$23.6K | -16.1% |
| Empowered Funds, LLC | 59,547 | 0 | $142.3K | -$16.1K | 0.0% |
| Bank of New York Mellon Corp | 48,451 | 0 | $115.8K | -$13.1K | 0.0% |
| Royal Bank of Canada | 186 | -4,289 | $0 | -$13.0K | -95.8% |
| NATIONAL BANK OF CANADA /FI/ | 25,000 | 0 | $58.8K | -$7.3K | 0.0% |
| UBS Group AG | 5,061 | -1,422 | $12.1K | -$5.1K | -21.9% |
| AMERICAN CENTURY COMPANIES INC | 18,881 | 0 | $45.1K | -$5.1K | 0.0% |
| TWO SIGMA ADVISERS, LP | 16,300 | 0 | $39.0K | -$4.4K | 0.0% |
| JPMORGAN CHASE & CO | 1,128 | -1,254 | $2.7K | -$3.6K | -52.6% |
| Thomasville National Bank | 13,350 | 0 | $31.9K | -$3.6K | 0.0% |
| BARCLAYS PLC | 1 | -206 | $3 | -$548 | -99.5% |
| RHUMBLINE ADVISERS | 928 | 0 | $2.2K | -$251 | 0.0% |
| McIlrath & Eck, LLC | 753 | 0 | $1.8K | -$203 | 0.0% |
| SIMPLEX TRADING, LLC | 67 | -255 | $160 | +$160 | -79.2% |
| JONES FINANCIAL COMPANIES LLLP | 370 | 0 | $884 | -$115 | 0.0% |
| Larson Financial Group LLC | 21 | 0 | $50 | -$6 | 0.0% |
| Optiver Holding B.V. | 8 | 0 | $19 | -$2 | 0.0% |
| SBI Securities Co., Ltd. | 1 | 0 | $2 | -$1 | 0.0% |
| CWM, LLC | 23 | -104 | $0 | $0 | -81.9% |
Sold Out(11)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0 | -67,355 | $0 | -$218.2K | — |
| NEW YORK STATE COMMON RETIREMENT FUND | 0 | -26,500 | $0 | -$135.4K | — |
| SYNOVUS FINANCIAL CORP | 0 | -11,796 | $0 | -$31.4K | — |
| Point72 Asia (Singapore) Pte. Ltd. | 0 | -6,817 | $0 | -$18.1K | — |
| Cubist Systematic Strategies, LLC | 0 | -5,320 | $0 | -$14.2K | — |
| HRT FINANCIAL LP | 0 | -26,156 | $0 | -$69 | — |
| SRS Capital Advisors, Inc. | 0 | -22 | $0 | -$58 | — |
| EverSource Wealth Advisors, LLC | 0 | -17 | $0 | -$45 | — |
| CITIGROUP INC | 0 | -12 | $0 | -$32 | — |
| True Wealth Design, LLC | 0 | -3 | $0 | -$8 | — |
| Sunbelt Securities, Inc. | 0 | -2 | $0 | -$5 | — |
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 % |
|---|---|---|---|---|
| RBF Capital, LLC | 397,002 | $948.8K | +197,002 | 98.5% |
| VANGUARD GROUP INC | 299,556 | $715.9K | -519,683 | -63.4% |
| BlackRock, Inc. | 288,632 | $689.8K | -13,754 | -4.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 221,121 | $528.7K | -742 | -0.3% |
| AMERIPRISE FINANCIAL INC | 186,796 | $446.4K | +186,796 | — |
| MORGAN STANLEY | 163,419 | $390.6K | +41,966 | 34.5% |
| MILLENNIUM MANAGEMENT LLC | 135,438 | $323.7K | -280,906 | -67.5% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 89,547 | $214.0K | +30,000 | 50.4% |
| NORTHERN TRUST CORP | 76,439 | $182.7K | -5,185 | -6.3% |
| STATE STREET CORP | 73,006 | $174.5K | +5,700 | 8.5% |
| JANE STREET GROUP, LLC | 69,738 | $166.7K | +13,971 | 25.1% |
| Squarepoint Ops LLC | 64,004 | $153.0K | +1,845 | 3.0% |
| Empowered Funds, LLC | 59,547 | $142.3K | 0 | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 50,695 | $121.0K | -13,621 | -21.2% |
| Bank of New York Mellon Corp | 48,451 | $115.8K | 0 | 0.0% |
| BANK OF AMERICA CORP /DE/ | 35,895 | $85.8K | -11,494 | -24.3% |
| Connor, Clark & Lunn Investment Management Ltd. | 30,229 | $72.2K | -5,800 | -16.1% |
| BNP PARIBAS ARBITRAGE, SNC | 26,864 | $64.2K | +6,254 | 30.3% |
| NATIONAL BANK OF CANADA /FI/ | 25,000 | $58.8K | 0 | 0.0% |
| XTX Topco Ltd | 21,703 | $51.9K | +6,647 | 44.1% |
New & Closed Positions this quarter
Closed Positions
11 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 XBIT 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.