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Adaptive Biotechnologies Corp: which funds bought and sold

Institutions that bought and sold Adaptive Biotechnologies shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 152 institutions that filed 13F reports for both quarters added to or opened positions in Adaptive Biotechnologies, and 129 cut or closed them. Together they added a net 3.8M shares, +2.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 7.4M shares (+11.3%); index fund managers were net buyers of 3.6M shares (+10.4%). 45 opened a new position and 41 sold out entirely.

Bought, Q2 2026 152 institutions, 45 of them new holders Sold, Q2 2026 129 institutions, 41 of them sold out
Net change, all compared +3.8M shares (+2.5%)
Net change, active managers +7.4M shares (+11.3%), 28 bought, 32 sold

Buyers versus sellers

institutions compared, 333
Active managers and hedge funds 28 bought · 32 sold · +7.4M
Index fund managers 10 bought · 1 sold · +3.6M
Other institutions 114 bought · 96 sold · −7.2M

Biggest buyers

by change in shares held
Biggest buyers
Institution Change in shares Shares June 30, 2026 Value
D. E. Shaw & Co., Inc. Hedge fund +2.7M +135.3% 4.6M $99.2M
Wellington Management Group LLP Active manager +2.1M +53.2% 5.9M $127M
Blackrock, Inc. Index funds +1.8M +13.8% 15.1M $325M
Price T Rowe Associates Inc Active manager +1.1M +70.2% 2.7M $57.2M
Perceptive Advisors LLC Hedge fund +1.1M +698.2% 1.2M $26.1M
Nuveen, LLC +1.1M +81.4% 2.4M $50.8M
Vanguard Portfolio Management LLC Index funds +985K +21.9% 5.5M $117M
Jane Street Group, LLC +908K +133.2% 1.6M $34.1M
Freestone Grove Partners LP Hedge fund +882K New position 882K $18.9M
T. Rowe Price Investment Management, Inc. Active manager +860K +93.6% 1.8M $38.2M
Driehaus Capital Management LLC Active manager +777K +44.4% 2.5M $54.2M
HRT Financial LP +664K +505.9% 795K $17.1M
Wasatch Advisors LP Active manager +576K New position 576K $12.4M
Arrowstreet Capital, Limited Partnership Hedge fund +529K +26.5% 2.5M $54.2M
Bank Of America Corp +502K +40.9% 1.7M $37.1M
Oberweis Asset Management Inc/ Active manager +452K +56.0% 1.3M $27M
BNP Paribas Financial Markets +419K +514.9% 500K $10.7M
Jump Financial, LLC +338K New position 338K $7.3M
Lisanti Capital Growth, LLC +325K New position 325K $7M
Vanguard Capital Management LLC Index funds +309K +5.1% 6.4M $137M

Biggest sellers

by change in shares held
Biggest sellers
Institution Change in shares Shares June 30, 2026 Value
Ameriprise Financial Inc −1.9M −63.9% 1.1M $23.3M
Principal Financial Group Inc −1.7M −97.7% 39K $832,882
Invesco Ltd. −1.4M −30.5% 3.1M $66.4M
Divisadero Street Capital Management, LP −1.3M Sold out 0 —
Capricorn Fund Managers Ltd −1.3M −98.2% 23K $486,765
Westfield Capital Management Co LP Active manager −1.2M −21.5% 4.3M $91.5M
Lord, Abbett & Co. LLC −1.1M −30.0% 2.5M $53.1M
Point72 Asset Management, L.P. Hedge fund −1.0M Sold out 0 —
Catalio Capital Management, LP −723K Sold out 0 —
Rhenman & Partners Asset Management AB −720K Sold out 0 —
Millennium Management LLC Hedge fund −576K −53.3% 505K $10.8M
Deutsche Bank Ag\ −548K −69.8% 237K $5.1M
BNP Paribas Asset Management Holding S.A. −506K −18.8% 2.2M $46.8M
Pbu - The Pension Fund Of Early Childhood & Youth Educators −378K Sold out 0 —
Counterpoint Mutual Funds LLC −307K Sold out 0 —
Amova Asset Management Americas, Inc. −266K −16.6% 1.3M $28.5M
Sumitomo Mitsui Trust Group, Inc. −266K −16.6% 1.3M $28.5M
Goldman Sachs Group Inc −258K −8.0% 3.0M $64M
Summittx Capital, L.P. −252K −79.3% 66K $1.4M
Tudor Investment Corp Et Al Hedge fund −243K −30.9% 543K $11.7M

New positions

largest by value

Sold out

largest by value

Who holds the shares

13F holdings at June 30, 2026
Institutions reporting
296
Ten largest holders
52.8%
of 13F-reported shares
Index fund managers
24.5%
of 13F-reported shares
Active managers and hedge funds
46.6%
of 13F-reported shares
Buying and selling by type of institution, March 31, 2026 to June 30, 2026
TypeBoughtSoldNewSold outNet change in sharesNet %
Active managers and hedge funds 28 32 7 9 +7.4M +11.3%
Index fund managers 10 1 0 0 +3.6M +10.4%
Other institutions 114 96 38 32 −7.2M −13.8%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

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