Institutional Manager · CIK 0002018299
Boxer Capital Management, LLC
SAN DIEGO, CA · File #028-25329
Latest AUM
$456.9M
Positions
45
Top-10 Concentration
91.4%
Filings
8
Portfolio Value Over Time
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | TERNS PHARMACEUTICALS INC | TERN | +375,000 | +$15.2M | $0 |
| NEW | PRAXIS PRECISION MEDICINES I | PRAX | +46,457 | +$13.7M | $0 |
| ADD | CELCUITY INC | CELC | +135,000 | +$13.5M | +$4.5M |
| REDUCE | UNIQURE NV | QURE | -510,000 | -$12.2M | -$27.6M |
| EXITED | MERUS N V | N5749R100 | -120,000 | -$11.3M | $0 |
| NEW | PALISADE BIO INC | PALI | +4,799,875 | +$11.3M | $0 |
| ADD | KODIAK SCIENCES INC | KOD | +386,000 | +$10.8M | +$8.7M |
| ADD | TANGO THERAPEUTICS INC | TNGX | +1,104,734 | +$9.8M | +$4.5M |
| NEW | SURROZEN INC | SRZNW | +416,150 | +$9.4M | $0 |
| NEW | CAPRICOR THERAPEUTICS INC | CAPR | +325,000 | +$9.4M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORT (Amended)Q/E Dec 202520 pos · $198.7M
- 13F HOLDINGS REPORTQ/E Dec 202545 pos · $456.9M
- 13F HOLDINGS REPORT (Amended)Q/E Dec 202528 pos · $332.5M
- 13F HOLDINGS REPORT (Amended)Q/E Dec 202534 pos · $313.7M
- 13F HOLDINGS REPORTQ/E Sep 202534 pos · $313.7M
- 13F HOLDINGS REPORTQ/E Jun 202520 pos · $198.7M
- 13F HOLDINGS REPORTQ/E Mar 202528 pos · $332.5M
- 13F HOLDINGS REPORTQ/E Dec 202460 pos · $1.17B
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | TANGO THERAPEUTICS INC | TNGX | 9,771,485 | $50.0M | 25.18% |
| 2 | REVOLUTION MEDICINES INC | RVMDW | 792,977 | $29.2M | 14.69% |
| 3 | REPLIMUNE GROUP INC | REPL | 2,211,341 | $20.5M | 10.34% |
| 4 | MERUS N V | N5749R100 | 365,000 | $19.2M | 9.66% |
| 5 | KYMERA THERAPEUTICS INC | KYMR | 432,010 | $18.9M | 9.49% |
| 6 | UNIQURE NV | QURE | 899,500 | $12.5M | 6.31% |
| 7 | ITEOS THERAPEUTICS INC | 46565G104 | 825,000 | $8.2M | 4.14% |
| 8 | UROGEN PHARMA LTD | URGN | 575,000 | $7.9M | 3.97% |
| 9 | AMYLYX PHARMACEUTICALS INC | AMLX | 1,225,000 | $7.9M | 3.95% |
| 10 | CRESCENT BIOPHARMA INC. | CBIO | 453,686 | $7.3M | 3.69% |
| 11 | PROTAGONIST THERAPEUTICS INC | PTGX | 60,000 | $3.3M | 1.67% |
| 12 | NEKTAR THERAPEUTICS | NKTR | 125,000 | $3.2M | 1.63% |
| 13 | KODIAK SCIENCES INC | KOD | 750,000 | $2.8M | 1.41% |
| 14 | CIDARA THERAPEUTICS INC | 171757206 | 55,000 | $2.7M | 1.35% |
| 15 | NURIX THERAPEUTICS INC | NRIX | 175,000 | $2.0M | 1.00% |
| 16 | INSTIL BIO INC | TIL | 70,700 | $1.5M | 0.74% |
| 17 | KALVISTA PHARMACEUTICALS INC | KALV | 93,400 | $1.1M | 0.53% |
| 18 | SAREPTA THERAPEUTICS INC | SRPT | 25,000 | $427,500 | 0.22% |
| 19 | NUVATION BIO INC | NUVB | 266,666 | $71,973 | 0.04% |
| 20 | SURROZEN INC | SRZNW | 66,666 | $1,207 | 0.00% |