Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in ADPT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | VIKING GLOBAL INVESTORS LP | 30.0M | $416.3M | 0.0% | 18.741% | 1.16% |
| 2 | BlackRock, Inc. | 13.3M | $184.6M | -0.2% | 8.312% | 0.00% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 6.1M | $84.6M | — | 3.808% | 0.00% |
| 4 | WESTFIELD CAPITAL MANAGEMENT CO LP | 5.4M | $75.5M | +33.9% | 3.397% | 0.32% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 4.5M | $62.3M | — | 2.806% | 0.00% |
| 6 | Invesco Ltd. | 4.5M | $61.8M | +43.2% | 2.780% | 0.01% |
| 7 | WELLINGTON MANAGEMENT GROUP LLP | 3.9M | $53.5M | +78.1% | 2.410% | 0.01% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 3.6M | $50.5M | +3.5% | 2.272% | 0.00% |
| 9 | GOLDMAN SACHS GROUP INC | 3.2M | $45.0M | +11.7% | 2.026% | 0.01% |
| 10 | STATE STREET CORP | 3.2M | $44.8M | +1.4% | 2.016% | 0.00% |
| 11 | AMERIPRISE FINANCIAL INC | 3.0M | $41.9M | +16.5% | 1.885% | 0.01% |
| 12 | BNP Paribas Asset Management Holding S.A. | 2.7M | $37.3M | — | 1.680% | 0.04% |
| 13 | ARK Investment Management LLC | 2.1M | $29.1M | -2.1% | 1.308% | 0.23% |
| 14 | FRED ALGER MANAGEMENT, LLC | 2.1M | $28.6M | -8.1% | 1.289% | 0.13% |
| 15 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2.0M | $27.7M | -17.6% | 1.247% | 0.01% |
| 16 | D. E. Shaw & Co., Inc. | 2.0M | $27.3M | +3.3% | 1.228% | 0.03% |
| 17 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.9M | $26.1M | -3.0% | 1.175% | 0.04% |
| 18 | DRIEHAUS CAPITAL MANAGEMENT LLC | 1.8M | $24.3M | -36.6% | 1.094% | 0.18% |
| 19 | Aristotle Atlantic Partners, LLC | 1.7M | $23.8M | -7.0% | 1.071% | 1.11% |
| 20 | PRINCIPAL FINANCIAL GROUP INC | 1.7M | $23.7M | +9.8% | 1.065% | 0.01% |
| 21 | Sumitomo Mitsui Trust Holdings, Inc. | 1.6M | $22.1M | -18.1% | 0.997% | 0.01% |
| 22 | Nikko Asset Management Americas, Inc. | 1.6M | $22.1M | -18.1% | 0.997% | 0.31% |
| 23 | NORTHERN TRUST CORP | 1.4M | $19.3M | +18.7% | 0.870% | 0.00% |
| 24 | Divisadero Street Capital Management, LP | 1.3M | $18.3M | +264.9% | 0.824% | 0.86% |
| 25 | Nuveen, LLC | 1.3M | $18.1M | +65.8% | 0.815% | 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 ADPT — a direct measure of their conviction.
Filings activity in ADPT 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 | 290 | +3.6% | 70.73% | 12.21 pp | $1.99B | 15% |
| Q4 2025 | 280 | +6.1% | 82.94% | +7.53 pp | $2.34B | +10.0% |
| Q3 2025 | 264 | +10% | 75.41% | +15.04 pp | $2.12B | +25% |
| Q2 2025 | 240 | +7.1% | 60.37% | +20.61 pp | $1.70B | +52% |
| Q1 2025 | 224 | +8.2% | 39.76% | +9.69 pp | $1.12B | +32% |
| Q4 2024 | 207 | +12% | 30.07% | +4.36 pp | $847M | +17% |
| Q3 2024 | 185 | +7.6% | 25.71% | +6.73 pp | $724M | +35% |
| Q2 2024 | 172 | — | 18.98% | — | $535M | — |
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 ADPT stock.
Based on Q1 2026 13F filings, institutional ownership of Adaptive Biotechnologies Corporation stands at 70.7%, held across 290 reporting institutions.
VIKING GLOBAL INVESTORS LP is the largest reported institutional holder of ADPT, with approximately 29,993,708 shares worth $0.42B as of Q1 2026.
Yes — 2 widely-followed marquee investors appear among the top 25 institutional holders of ADPT, including VIKING GLOBAL INVESTORS LP, ARK Investment Management LLC.
Our composite Smart Money Score for ADPT is 47 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
54 institutions opened new positions in ADPT during Q1 2026, while 44 fully exited. 50 added to existing positions and 185 trimmed.
ADPT institutional ownership fell by 12.21 percentage points quarter-over-quarter, with a net change of +10 holders.
The top 10 institutions account for 54.2% of all reported 13F value in ADPT, and the top 25 account for 73.7%.
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.
Adaptive Biotechnologies Corporation (ADPT) Institutional Ownership