New Positions
7 managers initiated
Top five by reported value
- Boxer Capital Management, LLC$377.5K
- LANDSCAPE CAPITAL MANAGEMENT, L.L.C.$153.2K
- CITIGROUP INC$30.1K
- JANE STREET GROUP, LLC$16.0K
- Nolet Wealth Management, LLC$13.6K
Boundless Bio Inc NASDAQ NMS - GLOBAL MARKET:BOLD
Institutional holders, quarter-over-quarter share deltas, and new and closed positions disclosed in Form 13F. Period 2025-12-31 · prior 2025-09-30.
7 new11 added19 reduced9 exited
Total Institutional Holders
37
as of 2025-12-31
Top Holder
FMR LLC
$3.2M
Largest QoQ Increase
CITADEL ADVISORS LLC
+477,492 sh
Largest QoQ Decrease
Nextech Invest, Ltd.
-1,228,069 sh
New Positions(7)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Boxer Capital Management, LLC | 250,000 | +250,000 | $377.5K | +$377.5K | — |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | 127,626 | +127,626 | $153.2K | +$153.2K | — |
| CITIGROUP INC | 25,073 | +25,073 | $30.1K | +$30.1K | — |
| JANE STREET GROUP, LLC | 13,323 | +13,323 | $16.0K | +$16.0K | — |
| Nolet Wealth Management, LLC | 11,323 | +11,323 | $13.6K | +$13.6K | — |
| JPMORGAN CHASE & CO | 169 | +169 | $203 | +$203 | — |
| GSA CAPITAL PARTNERS LLP | 62,476 | +62,476 | $75 | +$75 | — |
Added To(11)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | 1,353,904 | +477,492 | $1.6M | +$546.7K | 54.5% |
| Stonepine Capital Management, LLC | 710,071 | +296,618 | $852.1K | +$343.5K | 71.7% |
| RBF Capital, LLC | 400,000 | +200,000 | $480.0K | +$234.0K | 100.0% |
| RENAISSANCE TECHNOLOGIES LLC | 341,400 | +117,838 | $409.7K | +$134.7K | 52.7% |
| VANGUARD GROUP INC | 662,757 | +93,100 | $795.3K | +$94.6K | 16.3% |
| XTX Topco Ltd | 39,577 | +10,496 | $47.5K | +$11.7K | 36.1% |
| Tower Research Capital LLC (TRC) | 5,803 | +3,210 | $7.0K | +$3.8K | 123.8% |
| Qube Research & Technologies Ltd | 18,707 | +660 | $22.4K | +$250 | 3.6% |
| BANK OF AMERICA CORP /DE/ | 7,758 | +19 | $9.3K | -$209 | 0.2% |
| BlackRock, Inc. | 67,048 | +1,674 | $80.5K | +$47 | 2.6% |
| UBS Group AG | 23 | +22 | $27 | +$26 | 2200.0% |
Reduced(19)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| FMR LLC | 2,684,022 | -414,049 | $3.2M | -$589.8K | -13.4% |
| MILLENNIUM MANAGEMENT LLC | 135,410 | -28,681 | $162.5K | -$39.3K | -17.5% |
| SECTORAL ASSET MANAGEMENT INC | 678,574 | 0 | $814.3K | -$20.4K | 0.0% |
| WELLINGTON MANAGEMENT GROUP LLP | 556,233 | 0 | $667.5K | -$16.7K | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 94,098 | -8,170 | $112.9K | -$12.9K | -8.0% |
| Alyeska Investment Group, L.P. | 300,000 | 0 | $360.0K | -$9.0K | 0.0% |
| NORTHERN TRUST CORP | 189,475 | -1,326 | $227.4K | -$7.3K | -0.7% |
| Ensign Peak Advisors, Inc | 187,500 | 0 | $225.0K | -$5.6K | 0.0% |
| Sio Capital Management, LLC | 163,679 | 0 | $196.4K | -$4.9K | 0.0% |
| MORGAN STANLEY | 13,000 | -2,501 | $15.6K | -$3.5K | -16.1% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 50,500 | 0 | $60.6K | -$1.5K | 0.0% |
| Walleye Capital LLC | 39,624 | 0 | $47.5K | -$1.2K | 0.0% |
| STATE STREET CORP | 15,962 | 0 | $19.2K | -$479 | 0.0% |
| Abel Hall, LLC | 12,865 | -60 | $15.4K | -$460 | -0.5% |
| BNP PARIBAS ARBITRAGE, SNC | 176 | -173 | $211 | -$218 | -49.6% |
| Optiver Holding B.V. | 168 | 0 | $202 | -$5 | 0.0% |
| ACADIAN ASSET MANAGEMENT LLC | 12,610 | -1,143 | $14 | -$2 | -8.3% |
| BARCLAYS PLC | 2 | 0 | $2 | $0 | 0.0% |
| CWM, LLC | 9 | -6 | $0 | $0 | -40.0% |
Sold Out(9)
| Manager | Shares | Δ Shares | Value | Δ Value | % Δ |
|---|---|---|---|---|---|
| Nextech Invest, Ltd. | 0 | -1,228,069 | $0 | -$1.5M | — |
| NORGES BANK | 0 | -157,211 | $0 | -$545.5K | — |
| Redmile Group, LLC | 0 | -245,458 | $0 | -$301.9K | — |
| NEW YORK STATE COMMON RETIREMENT FUND | 0 | -88,400 | $0 | -$259.7K | — |
| Almitas Capital LLC | 0 | -86,808 | $0 | -$106.8K | — |
| Squarepoint Ops LLC | 0 | -50,771 | $0 | -$62.4K | — |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0 | -40,458 | $0 | -$61.1K | — |
| GOLDMAN SACHS GROUP INC | 0 | -14,299 | $0 | -$17.6K | — |
| Royal Bank of Canada | 0 | -959 | $0 | -$1.0K | — |
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 % |
|---|---|---|---|---|
| FMR LLC | 2,684,022 | $3.2M | -414,049 | -13.4% |
| CITADEL ADVISORS LLC | 1,353,904 | $1.6M | +477,492 | 54.5% |
| Stonepine Capital Management, LLC | 710,071 | $852.1K | +296,618 | 71.7% |
| SECTORAL ASSET MANAGEMENT INC | 678,574 | $814.3K | 0 | 0.0% |
| VANGUARD GROUP INC | 662,757 | $795.3K | +93,100 | 16.3% |
| WELLINGTON MANAGEMENT GROUP LLP | 556,233 | $667.5K | 0 | 0.0% |
| RBF Capital, LLC | 400,000 | $480.0K | +200,000 | 100.0% |
| RENAISSANCE TECHNOLOGIES LLC | 341,400 | $409.7K | +117,838 | 52.7% |
| Boxer Capital Management, LLC | 250,000 | $377.5K | +250,000 | — |
| Alyeska Investment Group, L.P. | 300,000 | $360.0K | 0 | 0.0% |
| NORTHERN TRUST CORP | 189,475 | $227.4K | -1,326 | -0.7% |
| Ensign Peak Advisors, Inc | 187,500 | $225.0K | 0 | 0.0% |
| Sio Capital Management, LLC | 163,679 | $196.4K | 0 | 0.0% |
| MILLENNIUM MANAGEMENT LLC | 135,410 | $162.5K | -28,681 | -17.5% |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | 127,626 | $153.2K | +127,626 | — |
| GEODE CAPITAL MANAGEMENT, LLC | 94,098 | $112.9K | -8,170 | -8.0% |
| BlackRock, Inc. | 67,048 | $80.5K | +1,674 | 2.6% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 50,500 | $60.6K | 0 | 0.0% |
| Walleye Capital LLC | 39,624 | $47.5K | 0 | 0.0% |
| XTX Topco Ltd | 39,577 | $47.5K | +10,496 | 36.1% |
New & Closed Positions this quarter
Closed Positions
9 managers exited
Top five by prior-quarter value
- Nextech Invest, Ltd.$1.5M
- NORGES BANK$545.5K
- Redmile Group, LLC$301.9K
- NEW YORK STATE COMMON RETIREMENT FUND$259.7K
- Almitas Capital LLC$106.8K
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 BOLD 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.