Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in CLYM held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 11.3M | $77.4M | +0.1% | 16.574% | 0.82% |
| 2 | MPM Oncology Impact Management LP | 2.6M | $17.8M | -2.9% | 3.804% | 1.37% |
| 3 | BRAIDWELL LP | 1.5M | $10.5M | β | 2.243% | 0.35% |
| 4 | GREAT POINT PARTNERS LLC | 1.3M | $9.1M | +36.2% | 1.957% | 2.24% |
| 5 | MILLENNIUM MANAGEMENT LLC | 1.3M | $8.7M | +330.7% | 1.872% | 0.01% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.2M | $8.1M | β | 1.729% | 0.00% |
| 7 | Kynam Capital Management, LP | 1.0M | $6.9M | -2.4% | 1.472% | 0.43% |
| 8 | MARSHALL WACE, LLP | 773K | $5.3M | +154.3% | 1.134% | 0.01% |
| 9 | Affinity Asset Advisors, LLC | 700K | $4.8M | -46.2% | 1.027% | 0.28% |
| 10 | SILVERARC CAPITAL MANAGEMENT, LLC | 685K | $4.7M | β | 1.004% | 0.55% |
| 11 | DRIEHAUS CAPITAL MANAGEMENT LLC | 601K | $4.1M | 0.0% | 0.881% | 0.03% |
| 12 | ADAR1 Capital Management, LLC | 598K | $4.1M | -58.3% | 0.877% | 0.26% |
| 13 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 459K | $3.1M | +3.1% | 0.673% | 0.00% |
| 14 | NAN FUNG TRINITY (HK) Ltd | 421K | $2.9M | -9.3% | 0.617% | 0.32% |
| 15 | SPHERA FUNDS MANAGEMENT LTD. | 419K | $2.9M | -55.0% | 0.615% | 0.48% |
| 16 | BlackRock, Inc. | 402K | $2.8M | +3.2% | 0.589% | 0.00% |
| 17 | CITADEL ADVISORS LLC | 346K | $2.4M | +44.6% | 0.507% | 0.00% |
| 18 | GEODE CAPITAL MANAGEMENT, LLC | 313K | $2.1M | +0.7% | 0.459% | 0.00% |
| 19 | TWO SIGMA INVESTMENTS, LP | 311K | $2.1M | -45.2% | 0.456% | 0.00% |
| 20 | DIADEMA PARTNERS LP | 286K | $2.0M | β | 0.420% | 0.62% |
| 21 | TD ASSET MANAGEMENT INC | 250K | $1.7M | +1.6% | 0.367% | 0.00% |
| 22 | MORGAN STANLEY | 234K | $1.6M | +57.7% | 0.344% | 0.00% |
| 23 | Longaeva Partners L.P. | 218K | $1.5M | β | 0.319% | 0.08% |
| 24 | RENAISSANCE TECHNOLOGIES LLC | 217K | $1.5M | -32.2% | 0.319% | 0.00% |
| 25 | SUPERSTRING CAPITAL MANAGEMENT LP | 199K | $1.4M | β | 0.292% | 0.97% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in CLYM β a direct measure of their conviction.
Filings activity in CLYM during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new CLYM position in Q1 2026
Institutions that fully closed their CLYM position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 79 | +23% | 26.57% | +7.39 pp | $207M | +39% |
| Q4 2025 | 64 | 4.5% | 19.18% | +7.83 pp | $150M | +69% |
| Q3 2025 | 67 | 2.9% | 11.35% | +3.52 pp | $89M | +45% |
| Q2 2025 | 69 | 9.2% | 7.83% | 0.19 pp | $61M | 2.3% |
| Q1 2025 | 76 | 5.0% | 8.02% | 4.67 pp | $63M | 37% |
| Q4 2024 | 80 | +11% | 12.69% | 22.49 pp | $99M | 64% |
| Q3 2024 | 72 | +50% | 35.18% | 10.29 pp | $274M | 23% |
| Q2 2024 | 48 | β | 45.47% | β | $355M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying CLYM stock.
Based on Q1 2026 13F filings, institutional ownership of Climb Bio, Inc. stands at 26.6%, held across 79 reporting institutions.
RA CAPITAL MANAGEMENT, L.P. is the largest reported institutional holder of CLYM, with approximately 11,300,939 shares worth $0.08B as of Q1 2026.
Yes β 5 widely-followed marquee investors appear among the top 25 institutional holders of CLYM, including MILLENNIUM MANAGEMENT LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP, CITADEL ADVISORS LLC, TWO SIGMA INVESTMENTS, LP, RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for CLYM is 82 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
28 institutions opened new positions in CLYM during Q1 2026, while 13 fully exited. 38 added to existing positions and 11 trimmed.
CLYM institutional ownership rose by 7.39 percentage points quarter-over-quarter, with a net change of +15 holders.
The top 10 institutions account for 74.0% of all reported 13F value in CLYM, and the top 25 account for 91.4%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Climb Bio, Inc. (CLYM) Institutional Ownership