ADPT Institutional Ownership
Who owns Adaptive Biotechnologies Corp and what the big funds did with it last quarter, from every SEC 13F filing. 304 funds reported holding ADPT at Jun 30, 2026, together owning 97.6% of the company.
- ▲155 buying vs 130 selling
- ▲Held by funds +2.4 pts
- ●Funds holding +3
- ▼Superinvestors: 1 added, 5 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 304 | 301 | +1.0% |
| In funds' top 10 | 2 | 2 | 0.0% |
| 13F shares | 156M | 152M | +2.5% |
| Held by funds | 97.6% | 95.2% | +2.4 pts |
| New positions | 46 | 50 | −8.0% |
| Increased | 109 | 100 | +9.0% |
| Reduced | 88 | 96 | −8.3% |
| Sold out | 42 | 38 | +10.5% |
| Calls (shares) | 0 | 0 | – |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | – | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ADPT
All superinvestors →
Who owns ADPT
share of fund held shares- Index and passive funds26.9%
- Active managers and hedge funds61.2%
- Banks and brokers11.6%
- Pensions, insurers and other0.4%
The top 10 holders own 52.6% of all ADPT shares that funds reported. Groups are our own grouping of filers by name.
Filed so far for Q3 2026
69 funds changed their position- Principal Financial Group IncAdded+2.4M sh
- Mackenzie Financial CorpNew+740K sh
- Capricorn Fund Managers LtdAdded+344K sh
- Wasatch Advisors LPTrimmed−278K sh
- Sumitomo Mitsui Trust Group, Inc.Trimmed−242K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Viking Global Investors LP | 18.79% | 30M | $643M | 0 |
| 2 | BlackRock, Inc. | 9.49% | 15.1M | $325M | +1.8M |
| 3 | Vanguard Capital Management LLC | 4.01% | 6.4M | $137M | +309K |
| 4 | Wellington Management Group LLP | 3.70% | 5.9M | $127M | +2.1M |
| 5 | Vanguard Portfolio Management LLC | 3.43% | 5.5M | $117M | +985K |
| 6 | D. E. Shaw & Co., Inc. | 2.90% | 4.6M | $99.2M | +2.7M |
| 7 | Westfield Capital Management Co LP | 2.67% | 4.3M | $91.5M | −1.2M |
| 8 | Geode Capital Management, LLC | 2.28% | 3.6M | $78.1M | +5,783 |
| 9 | State Street Corp | 2.17% | 3.5M | $74.2M | +231K |
| 10 | Invesco Ltd. | 1.94% | 3.1M | $66.4M | −1.4M |
- D. E. Shaw & Co., Inc.+2.7M sh+$57.1M
- Wellington Management Group LLP+2.1M sh+$44.1M
- BlackRock, Inc.+1.8M sh+$39.4M
- Price T Rowe Associates Inc /md/+1.1M sh+$23.6M
- Perceptive Advisors LLC+1.1M sh+$22.8M
- Nuveen, LLC+1.1M sh+$22.8M
- Vanguard Portfolio Management LLC+985K sh+$21.1M
- Jane Street Group, LLC+908K sh+$19.5M
- Ameriprise Financial Inc−1.9M sh−$41.4M
- Principal Financial Group Inc−1.7M sh−$35.7M
- Invesco Ltd.−1.4M sh−$29.1M
- Capricorn Fund Managers Ltd−1.3M sh−$27.2M
- Westfield Capital Management Co LP−1.2M sh−$25.1M
- Lord, Abbett & Co. LLC−1.1M sh−$22.8M
- Divisadero Street Capital Management, LP−1.3M sh−$18.3M
- Point72 Asset Management, L.P.−1M sh−$14.2M
ADPT institutional ownership FAQ
Who owns the most ADPT stock?
In Q2 2026 13F filings the largest holder of ADPT was Viking Global Investors LP, followed by BlackRock, Inc. and Vanguard Capital Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of ADPT is owned by institutions?
Funds that file 13F reports held 97.6% of ADPT's shares at Jun 30, 2026, compared with 95.2% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ADPT?
In Q2 2026, 155 funds bought ADPT (46 of them new positions) and 130 sold (42 sold out completely). Among well known investors, 1 added and 5 cut. Our fund sentiment for ADPT is neutral.
What is ADPT's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this ADPT ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.