Who owns ADPTWhat ADPT owns — n/a

Who owns Adaptive Biotechnologies Corp?

Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.

Institutional ownership of ADPT from SEC Form 13F filings across 299 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.

As of the 2026-06-30 reporting period, 299 institutions disclosed 155.7M shares of Adaptive Biotechnologies Corp worth $3.34B — about 97.4% of shares outstanding; the largest disclosed holder is VIKING GLOBAL INVESTORS LP. Source: SEC Form 13F filings, parsed by EvidInvest.

299

13F holders

$3.34B

value, 2026 filers

97.4%

of shares outstanding (155.7M sh)

new positions (2026 filers)

Top institutional holders

ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ADPT's shares outstanding

#	Manager	Shares	Value	% of fund	% of co.	Δ shares QoQ
1	VIKING GLOBAL INVESTORS LP	30.0M	$643.4M	1.8%	18.8%	0.0%
2	BlackRock, Inc.	15.1M	$324.7M	0.0%	9.5%	+13.8%
3	VANGUARD CAPITAL MANAGEMENT LLC	6.4M	$137.4M	0.0%	4%	+5.1%
4	WELLINGTON MANAGEMENT GROUP LLP	5.9M	$126.8M	0.0%	3.7%	+53.2%
5	VANGUARD PORTFOLIO MANAGEMENT LLC	5.5M	$117.5M	0.0%	3.4%	+21.9%
6	D. E. Shaw & Co., Inc.	4.6M	$99.2M	0.0%	2.9%	+135.3%
7	WESTFIELD CAPITAL MANAGEMENT CO LP	4.3M	$91.5M	0.3%	2.7%	-21.5%
8	GEODE CAPITAL MANAGEMENT, LLC	3.6M	$78.1M	0.0%	2.3%	+0.2%
9	STATE STREET CORP	3.5M	$74.2M	0.0%	2.2%	+7.2%
10	Invesco Ltd.	3.1M	$66.4M	0.0%	1.9%	-30.5%
11	GOLDMAN SACHS GROUP INC	3.0M	$64.0M	0.0%	1.9%	-8.0%
12	PRICE T ROWE ASSOCIATES INC /MD/	2.7M	$57.2M	0.0%	1.7%	+70.2%
13	Driehaus Capital Management LLC	2.5M	$54.2M	0.3%	1.6%	+44.4%
14	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	2.5M	$54.2M	0.0%	1.6%	+26.5%
15	LORD, ABBETT & CO. LLC	2.5M	$53.1M	0.2%	1.5%	-30.0%
16	Nuveen, LLC	2.4M	$50.8M	0.0%	1.5%	+81.4%
17	BNP PARIBAS ASSET MANAGEMENT Holding S.A.	2.2M	$46.8M	0.0%	1.4%	-18.8%
18	FRED ALGER MANAGEMENT, LLC	2.1M	$44.9M	0.1%	1.3%	+1.4%
19	ARK Investment Management LLC	2.1M	$44.8M	0.3%	1.3%	-0.1%
20	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	1.9M	$40.5M	0.1%	1.2%	+0.4%
21	Aristotle Atlantic Partners, LLC	1.8M	$39.4M	1.6%	1.2%	+7.2%
22	T. Rowe Price Investment Management, Inc.	1.8M	$38.2M	0.0%	1.1%	+93.6%
23	BANK OF AMERICA CORP /DE/	1.7M	$37.1M	0.0%	1.1%	+40.9%
24	JANE STREET GROUP, LLC	1.6M	$34.1M	0.0%	1%	+133.2%
25	NORTHERN TRUST CORP	1.5M	$32.3M	0.0%	0.9%	+8.3%

Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.