62% buyers of institutions opening or closing positions this quarter
9 more new buyers than exits, ownership rose 28.56 percentage points vs the prior quarter, and no widely-followed fund managers in the top 25.
62% buyers of institutions opening or closing positions this quarter
55.2% institutional ownership
Saturn V Capital portfolio allocation
Institutional ownership vs Biotechnology peers
No Form 4 insider transactions on file
Latest positioning in IMMX 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 IMMX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | JANUS HENDERSON GROUP PLC | 4.8M | $43.7M | +22.4% | 8.825% | 0.02% |
| 2 | Saturn V Capital Management LP | 3.7M | $33.6M | +23.2% | 6.788% | 6.09% |
| 3 | EVENTIDE ASSET MANAGEMENT, LLC | 2.5M | $23.2M | 0.0% | 4.685% | 0.38% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.8M | $16.3M | — | 3.286% | 0.00% |
| 5 | MILLENNIUM MANAGEMENT LLC | 1.8M | $15.9M | +5.5% | 3.217% | 0.01% |
| 6 | MARSHALL WACE, LLP | 1.6M | $15.0M | -17.0% | 3.017% | 0.01% |
| 7 | Logos Global Management LP | 1.2M | $11.2M | +22.5% | 2.251% | 0.56% |
| 8 | Bleichroeder LP | 1.0M | $9.1M | 0.0% | 1.838% | 1.57% |
| 9 | FRANKLIN RESOURCES INC | 969K | $8.8M | -1.2% | 1.781% | 0.00% |
| 10 | Velan Capital Investment Management LP | 740K | $6.7M | +2014.3% | 1.360% | 4.22% |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 589K | $5.4M | +22.1% | 1.082% | 0.00% |
| 12 | Blue Owl Capital Holdings LP | 548K | $5.0M | -44.5% | 1.006% | 1.34% |
| 13 | BlackRock, Inc. | 468K | $4.3M | +259.6% | 0.861% | 0.00% |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 463K | $4.2M | +88.3% | 0.852% | 0.00% |
| 15 | LGT Fund Management Co Ltd. | 417K | $3.8M | +233.3% | 0.766% | 0.16% |
| 16 | GREAT POINT PARTNERS LLC | 350K | $3.2M | — | 0.643% | 0.73% |
| 17 | Institute for Wealth Management, LLC. | 338K | $3.1M | — | 0.620% | 0.33% |
| 18 | Burkehill Global Management, LP | 294K | $2.7M | 0.0% | 0.540% | 0.13% |
| 19 | VANGUARD FIDUCIARY TRUST CO | 253K | $2.3M | — | 0.465% | 0.00% |
| 20 | KVP Capital Advisors, LP | 230K | $2.1M | 0.0% | 0.423% | 1.57% |
| 21 | J. Goldman & Co LP | 228K | $2.1M | +92.9% | 0.419% | 0.06% |
| 22 | STATE STREET CORP | 192K | $1.7M | +97.1% | 0.353% | 0.00% |
| 23 | Qube Research & Technologies Ltd | 188K | $1.7M | +276.8% | 0.345% | 0.00% |
| 24 | SEI INVESTMENTS CO | 147K | $1.3M | +100.0% | 0.270% | 0.00% |
| 25 | MORGAN STANLEY | 140K | $1.3M | +10.5% | 0.257% | 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 IMMX — a direct measure of their conviction.
Filings activity in IMMX during Q1 2026, grouped by how each filer changed its position.
8 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 | 76 | +13% | 55.18% | +28.56 pp | $243M | +90% |
| Q4 2025 | 67 | +109% | 26.62% | +25.42 pp | $128M | +2120% |
| Q3 2025 | 32 | +33% | 1.20% | +0.24 pp | $6M | +25% |
| Q2 2025 | 24 | +4.3% | 0.96% | 0.14 pp | $5M | 5.0% |
| Q1 2025 | 23 | 4.2% | 1.10% | 0.19 pp | $5M | 22% |
| Q4 2024 | 24 | 7.7% | 1.29% | +0.03 pp | $6M | +2.2% |
| Q3 2024 | 26 | 19% | 1.26% | 0.54 pp | $6M | 30% |
| Q2 2024 | 32 | — | 1.80% | — | $9M | — |
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 IMMX.
Quick answers to the most common questions about buying IMMX stock.
Based on Q1 2026 13F filings, institutional ownership of Immix Biopharma, Inc. stands at 55.2%, held across 76 reporting institutions.
JANUS HENDERSON GROUP PLC is the largest reported institutional holder of IMMX, with approximately 4,802,002 shares worth $0.04B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of IMMX.
Our composite Smart Money Score for IMMX is 50 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
24 institutions opened new positions in IMMX during Q1 2026, while 15 fully exited. 46 added to existing positions and 6 trimmed.
IMMX institutional ownership rose by 28.56 percentage points quarter-over-quarter, with a net change of +9 holders.
The top 10 institutions account for 75.5% of all reported 13F value in IMMX, and the top 25 account for 93.6%.
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.