Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MGNX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | ARMISTICE CAPITAL, LLC | 6.0M | $17.4M | -4.9% | 9.458% | 0.51% |
| 2 | RENAISSANCE TECHNOLOGIES LLC | 3.0M | $8.6M | +1.9% | 4.662% | 0.01% |
| 3 | MILLENNIUM MANAGEMENT LLC | 2.8M | $8.1M | +41.5% | 4.396% | 0.01% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 2.7M | $7.7M | β | 4.175% | 0.00% |
| 5 | TWO SIGMA INVESTMENTS, LP | 2.5M | $7.3M | +152.9% | 3.977% | 0.01% |
| 6 | BANK OF AMERICA CORP /DE/ | 2.4M | $6.9M | +30.7% | 3.779% | 0.00% |
| 7 | MARSHALL WACE, LLP | 2.0M | $5.9M | +57.7% | 3.187% | 0.01% |
| 8 | RA CAPITAL MANAGEMENT, L.P. | 1.9M | $5.4M | β | 2.933% | 0.06% |
| 9 | WASATCH ADVISORS INC | 1.6M | $4.5M | -12.7% | 2.454% | 0.03% |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.2M | $3.5M | β | 1.902% | 0.00% |
| 11 | BlackRock, Inc. | 1.2M | $3.4M | +0.9% | 1.830% | 0.00% |
| 12 | D. E. Shaw & Co., Inc. | 1.1M | $3.1M | +39.9% | 1.665% | 0.00% |
| 13 | Connor, Clark & Lunn Investment Management Ltd. | 867K | $2.5M | +5.9% | 1.364% | 0.01% |
| 14 | CITADEL ADVISORS LLC | 840K | $2.4M | -25.1% | 1.322% | 0.00% |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 697K | $2.0M | +6.4% | 1.097% | 0.00% |
| 16 | JANE STREET GROUP, LLC | 609K | $1.8M | -51.5% | 0.957% | 0.02% |
| 17 | DIADEMA PARTNERS LP | 600K | $1.7M | β | 0.944% | 0.55% |
| 18 | MACKENZIE FINANCIAL CORP | 597K | $1.7M | +187.4% | 0.940% | 0.00% |
| 19 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 513K | $1.5M | +527.4% | 0.807% | 0.00% |
| 20 | Affinity Asset Advisors, LLC | 500K | $1.4M | +3.2% | 0.787% | 0.08% |
| 21 | JACOBS LEVY EQUITY MANAGEMENT, INC | 441K | $1.3M | -51.0% | 0.694% | 0.01% |
| 22 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 420K | $1.2M | 0.0% | 0.661% | 0.00% |
| 23 | Walleye Capital LLC | 411K | $1.2M | +1139.2% | 0.647% | 0.01% |
| 24 | VANGUARD FIDUCIARY TRUST CO | 340K | $983K | β | 0.535% | 0.00% |
| 25 | UBS Group AG | 296K | $856K | +147.9% | 0.466% | 0.00% |
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 MGNX β a direct measure of their conviction.
Filings activity in MGNX during Q1 2026, grouped by how each filer changed its position.
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 | 108 | +23% | 46.34% | +18.87 pp | $117M | +69% |
| Q4 2025 | 88 | 15% | 27.47% | 1.54 pp | $69M | 5.3% |
| Q3 2025 | 104 | 6.3% | 29.01% | +7.18 pp | $73M | +33% |
| Q2 2025 | 111 | 13% | 21.83% | 5.69 pp | $55M | 21% |
| Q1 2025 | 128 | 0.8% | 27.52% | 42.20 pp | $69M | 61% |
| Q4 2024 | 129 | +4.9% | 69.72% | 58.55 pp | $175M | 46% |
| Q3 2024 | 123 | 12% | 128.27% | +29.45 pp | $323M | +30% |
| Q2 2024 | 140 | β | 98.82% | β | $249M | 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 MGNX stock.
Based on Q1 2026 13F filings, institutional ownership of MacroGenics, Inc. stands at 46.3%, held across 108 reporting institutions.
ARMISTICE CAPITAL, LLC is the largest reported institutional holder of MGNX, with approximately 6,012,000 shares worth $0.02B as of Q1 2026.
Yes β 6 widely-followed marquee investors appear among the top 25 institutional holders of MGNX, including RENAISSANCE TECHNOLOGIES LLC, MILLENNIUM MANAGEMENT LLC, TWO SIGMA INVESTMENTS, LP, CITADEL ADVISORS LLC, JANE STREET GROUP, LLC.
Our composite Smart Money Score for MGNX is 84 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
32 institutions opened new positions in MGNX during Q1 2026, while 12 fully exited. 67 added to existing positions and 8 trimmed.
MGNX institutional ownership rose by 18.87 percentage points quarter-over-quarter, with a net change of +20 holders.
The top 10 institutions account for 64.4% of all reported 13F value in MGNX, and the top 25 account for 87.6%.
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.
MacroGenics, Inc. (MGNX) Institutional Ownership