44% buyers of institutions opening or closing positions this quarter
2 more exits than new buyers, ownership fell 7.87 percentage points vs the prior quarter, and 2 well-known fund managers in the top 25.
44% buyers of institutions opening or closing positions this quarter
41.5% institutional ownership
Omega Fund Management, portfolio allocation
Institutional ownership vs Biotechnology peers
No Form 4 insider transactions on file
Latest positioning in IMA across 13F flow, ownership shift, marquee holders, and holder-count growth.
Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in IMA held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BVF INC/IL | 1.1M | $5.6M | +38.4% | 9.841% | 0.18% |
| 2 | Blue Owl Capital Holdings LP | 959K | $4.8M | +16.4% | 8.505% | 1.29% |
| 3 | Cable Car Capital, LP | 755K | $3.8M | +17.2% | 6.692% | 1.30% |
| 4 | Omega Fund Management, LLC | 455K | $2.3M | 0.0% | 4.037% | 1.40% |
| 5 | ORBIMED ADVISORS LLC | 379K | $1.9M | 0.0% | 3.356% | 0.04% |
| 6 | RTW INVESTMENTS, LP | 334K | $1.7M | 0.0% | 2.965% | 0.02% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 325K | $1.6M | — | 2.883% | 0.00% |
| 8 | BML Capital Management, LLC | 201K | $1.0M | +13.4% | 1.780% | 0.64% |
| 9 | BlackRock, Inc. | 129K | $646K | -1.8% | 1.146% | 0.00% |
| 10 | CITADEL ADVISORS LLC | 124K | $622K | +43.8% | 1.102% | 0.00% |
| 11 | RENAISSANCE TECHNOLOGIES LLC | 82K | $408K | +23.6% | 0.724% | 0.00% |
| 12 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 67K | $333K | 0.0% | 0.591% | 0.00% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 60K | $300K | +10.7% | 0.531% | 0.00% |
| 14 | NEA Management Company, LLC | 50K | $250K | 0.0% | 0.443% | 0.01% |
| 15 | HSBC HOLDINGS PLC | 35K | $166K | — | 0.309% | 0.00% |
| 16 | Rangeley Capital, LLC | 33K | $163K | +78.6% | 0.289% | 0.16% |
| 17 | Sofinnova Investments, Inc. | 32K | $159K | 0.0% | 0.283% | 0.01% |
| 18 | NANO CAP NEW MILLENNIUM GROWTH FUND L P | 30K | $150K | +13.2% | 0.266% | 0.14% |
| 19 | VANGUARD FIDUCIARY TRUST CO | 27K | $136K | — | 0.242% | 0.00% |
| 20 | JACOBS LEVY EQUITY MANAGEMENT, INC | 27K | $133K | +42.4% | 0.236% | 0.00% |
| 21 | Shay Capital LLC | 19K | $96K | -17.6% | 0.170% | 0.01% |
| 22 | Aldebaran Capital, LLC | 19K | $93K | -2.6% | 0.165% | 0.07% |
| 23 | MORGAN STANLEY | 18K | $92K | +70.3% | 0.163% | 0.00% |
| 24 | XTX Topco Ltd | 15K | $76K | +24.1% | 0.134% | 0.00% |
| 25 | JANE STREET GROUP, LLC | 13K | $66K | -11.3% | 0.117% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in IMA — a direct measure of their conviction.
Filings activity in IMA during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new IMA position in Q1 2026
Institutions that fully closed their IMA position in Q1 2026
3 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 37 | 5.1% | 41.46% | 7.87 pp | $27M | 18% |
| Q4 2025 | 39 | +18% | 49.33% | 9.09 pp | $32M | 16% |
| Q3 2025 | 33 | — | 58.42% | — | $38M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
No recent Form 4 insider transactions on file for IMA.
Quick answers to the most common questions about buying IMA stock.
Based on Q1 2026 13F filings, institutional ownership of ImageneBio Inc stands at 41.5%, held across 37 reporting institutions.
BVF INC/IL is the largest reported institutional holder of IMA, with approximately 1,110,002 shares worth $0.01B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of IMA, including CITADEL ADVISORS LLC, RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for IMA is 39 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
8 institutions opened new positions in IMA during Q1 2026, while 10 fully exited. 5 added to existing positions and 24 trimmed.
IMA institutional ownership fell by 7.87 percentage points quarter-over-quarter, with a net change of -2 holders.
The top 10 institutions account for 89.4% of all reported 13F value in IMA, and the top 25 account for 99.2%.
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.