Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MYGN held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | ORBIMED ADVISORS LLC | 125.0M | $122.9M | — | 133.678% | 2.59% |
| 2 | BlackRock, Inc. | 8.9M | $40.0M | -41.9% | 9.507% | 0.00% |
| 3 | MILLENNIUM MANAGEMENT LLC | 6.7M | $30.0M | -0.5% | 7.132% | 0.02% |
| 4 | GLENVIEW CAPITAL MANAGEMENT, LLC | 5.4M | $24.4M | +18.0% | 5.788% | 0.66% |
| 5 | D. E. Shaw & Co., Inc. | 4.5M | $20.2M | -0.1% | 4.812% | 0.02% |
| 6 | STATE STREET CORP | 4.4M | $19.9M | -25.9% | 4.731% | 0.00% |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 3.9M | $17.7M | — | 4.197% | 0.00% |
| 8 | MORGAN STANLEY | 3.2M | $14.3M | -12.2% | 3.389% | 0.00% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.6M | $11.6M | — | 2.761% | 0.00% |
| 10 | GOLDMAN SACHS GROUP INC | 2.4M | $10.6M | +9.5% | 2.530% | 0.00% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 2.3M | $10.4M | +4.0% | 2.480% | 0.00% |
| 12 | JACOBS LEVY EQUITY MANAGEMENT, INC | 2.1M | $9.4M | -8.0% | 2.234% | 0.04% |
| 13 | FEDERATED HERMES, INC. | 2.0M | $8.9M | +50.8% | 2.113% | 0.01% |
| 14 | AQR CAPITAL MANAGEMENT LLC | 1.9M | $8.6M | +2.2% | 2.045% | 0.00% |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.8M | $8.1M | +2.7% | 1.927% | 0.00% |
| 16 | Qube Research & Technologies Ltd | 1.7M | $7.6M | +93.6% | 1.808% | 0.01% |
| 17 | Vestal Point Capital, LP | 1.6M | $7.4M | +34.8% | 1.762% | 0.21% |
| 18 | Assenagon Asset Management S.A. | 1.4M | $6.5M | +23.9% | 1.547% | 0.01% |
| 19 | Connor, Clark & Lunn Investment Management Ltd. | 1.3M | $5.9M | +14.0% | 1.410% | 0.01% |
| 20 | TWO SIGMA INVESTMENTS, LP | 1.3M | $5.8M | +40.3% | 1.373% | 0.00% |
| 21 | JANE STREET GROUP, LLC | 1.2M | $5.4M | +2109.8% | 1.286% | 0.05% |
| 22 | Fisher Asset Management, LLC | 1.2M | $5.4M | -1.3% | 1.274% | 0.00% |
| 23 | abrdn plc | 1.1M | $5.0M | +25.4% | 1.188% | 0.01% |
| 24 | MARSHALL WACE, LLP | 1.1M | $5.0M | +4849.1% | 1.180% | 0.01% |
| 25 | NORTHERN TRUST CORP | 991K | $4.5M | -12.1% | 1.059% | 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 MYGN — a direct measure of their conviction.
Filings activity in MYGN 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 | 201 | 9.0% | 121.88% | 14.41 pp | $493M | 11% |
| Q4 2025 | 221 | +4.2% | 136.29% | 15.55 pp | $552M | 10% |
| Q3 2025 | 212 | 2.3% | 151.84% | 48.15 pp | $615M | 81% |
| Q2 2025 | 217 | 5.2% | 199.99% | +0.00 pp | $3.20B | +286% |
| Q1 2025 | 229 | +6.0% | 199.99% | +0.00 pp | $830M | 31% |
| Q4 2024 | 216 | 11% | 199.99% | +0.00 pp | $1.20B | 47% |
| Q3 2024 | 243 | +10% | 199.99% | +0.00 pp | $2.28B | +12% |
| Q2 2024 | 220 | — | 199.99% | — | $2.03B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MYGN stock.
Based on Q1 2026 13F filings, institutional ownership of Myriad Genetics, Inc. stands at 121.9%, held across 201 reporting institutions.
ORBIMED ADVISORS LLC is the largest reported institutional holder of MYGN, with approximately 125,000,000 shares worth $0.12B as of Q1 2026.
Yes — 4 widely-followed marquee investors appear among the top 25 institutional holders of MYGN, including MILLENNIUM MANAGEMENT LLC, TWO SIGMA INVESTMENTS, LP, JANE STREET GROUP, LLC, Fisher Asset Management, LLC.
Our composite Smart Money Score for MYGN is 44 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
33 institutions opened new positions in MYGN during Q1 2026, while 53 fully exited. 39 added to existing positions and 127 trimmed.
MYGN institutional ownership fell by 14.41 percentage points quarter-over-quarter, with a net change of -20 holders.
The top 10 institutions account for 63.1% of all reported 13F value in MYGN, and the top 25 account for 84.2%.
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.
Myriad Genetics, Inc. (MYGN) Institutional Ownership