Adaptive Biotechnologies ADPT Institutional Ownership

NASDAQ ADPT

$26.42 +0.26 (+0.99%)

As of: Aug 27, 2026 · 3:59 PM EDT

Institutions by Trading Activity

298 Institutions

Increased 160 53.7%

Unchanged 52 17.4%

Reduced 86 28.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

97.89%

▲+0.18 pp QoQ

Shares Held by Institutions

156.47Mn

of 159.86Mn outstanding

▲+7.15% QoQ

Shares Outstanding

159.86Mn

3.38Mn held outside 13F filers

Institutional Investors

298

filed 13F for Jun 2026

▲+4 vs prior quarter

Net Shares Added (QoQ)

+10.44Mn

accumulated since last quarter

Value of Holdings

$4.09Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Adaptive Biotechnologies Corp (NASDAQ:ADPT) has 290 institutional investors that have filed 13F reports for the period ending March 2026.

Their combined ownership stood at 97.7% of outstanding shares in March 2026, up from 97.5% in December 2025.
Their total shares held in ADPT increased 14.87% quarter over quarter, and separately, investors owning Adaptive Biotechnologies increased 28.89% from a year ago.
Of these 290 holders, 159 added to their stakes in Adaptive Biotechnologies, 90 trimmed positions, and 41 made no changes.
Institutional investors collectively held 151.89Mn shares in Adaptive Biotechnologies as of March 2026, up by 19.66Mn shares quarter on quarter, and down 9.41Mn shares year over year.
VIKING GLOBAL INVESTORS LP holds the largest position in ADPT at 29.99Mn shares as of March 31, 2026, or 19.29% of shares outstanding.
The most significant purchases of ADPT for the quarter ending March 2026 came from VANGUARD CAPITAL MANAGEMENT LLC (6.09Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (4.49Mn), BNP Paribas Asset Management Holding S.A. (2.69Mn), WELLINGTON MANAGEMENT GROUP LLP (1.69Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.57Mn).
Top sellers of ADPT stock for the quarter ending March 2026 included Goldman Sachs Group Inc (2.56Mn), PBU - The Pension Fund of Early Childhood & Youth Educators (2.54Mn), JENNISON ASSOCIATES LLC (1.92Mn), DIMENSIONAL FUND ADVISORS LP (1.19Mn), DRIEHAUS CAPITAL MANAGEMENT LLC (1.01Mn).
Per Business Quant data, the top 10 holders of Adaptive Biotechnologies for the quarter ending March 2026 are VIKING GLOBAL INVESTORS LP (29.99Mn), BlackRock, Inc. (13.3Mn), VANGUARD CAPITAL MANAGEMENT LLC (6.09Mn), WESTFIELD CAPITAL MANAGEMENT CO LP (5.44Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (4.49Mn), Invesco Ltd. (4.45Mn), WELLINGTON MANAGEMENT GROUP LLP (3.86Mn), GEODE CAPITAL MANAGEMENT, LLC (3.64Mn), LORD, ABBETT & CO. LLC (3.54Mn), Goldman Sachs Group Inc (3.24Mn).

Form 13F Holdings

298 Institutional Holders

Report period 30 Jun, 2026

Total shares held 156.47Mn

Of outstanding 97.89%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	VIKING GLOBAL INVESTORS LP	0001103804	29,993,708	18.76%	0	0.00%	$643.37Mn
2	BlackRock, Inc.	0002012383	15,139,159	9.47%	▲1,836,134	+13.80%	$324.73Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	6,403,587	4.01%	▲309,443	+5.08%	$137.36Mn
4	WELLINGTON MANAGEMENT GROUP LLP	0000902219	5,911,366	3.70%	▲2,053,944	+53.25%	$126.80Mn
5	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	5,476,231	3.43%	▲984,757	+21.93%	$117.47Mn
6	D. E. Shaw & Co., Inc.	0001009207	4,625,859	2.89%	▲2,660,249	+135.34%	$99.22Mn
7	WESTFIELD CAPITAL MANAGEMENT CO LP	0001177719	4,267,645	2.67%	▼1,169,073	-21.50%	$91.54Mn
8	GEODE CAPITAL MANAGEMENT, LLC	0001214717	3,641,837	2.28%	▲5,783	+0.16%	$78.13Mn
9	State Street Corp	0000093751	3,458,388	2.16%	▲231,143	+7.16%	$74.18Mn
10	Invesco Ltd.	0000914208	3,094,011	1.94%	▼1,356,055	-30.47%	$66.37Mn
11	Goldman Sachs Group Inc	0000886982	2,984,227	1.87%	▼257,850	-7.95%	$64.01Mn
12	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	2,665,308	1.67%	▲1,099,095	+70.18%	$57.17K
13	DRIEHAUS CAPITAL MANAGEMENT LLC	0000938206	2,527,703	1.58%	▲777,102	+44.39%	$54.22Mn
14	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	2,524,620	1.58%	▲529,418	+26.53%	$54.15Mn
15	LORD, ABBETT & CO. LLC	0000728100	2,474,814	1.55%	▼1,061,289	-30.01%	$53.09K
16	Nuveen, LLC	0001871926	2,366,155	1.48%	▲1,061,995	+81.43%	$50.75Mn
17	BNP Paribas Asset Management Holding S.A.	0001520354	2,182,326	1.37%	▼505,755	-18.81%	$46.81Mn
18	FRED ALGER MANAGEMENT, LLC	0000003520	2,092,284	1.31%	▲29,138	+1.41%	$44.88Mn
19	ARK Investment Management LLC	0001697748	2,090,306	1.31%	▼2,663	-0.13%	$44.84Mn
20	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	0000921739	1,889,188	1.18%	▲8,005	+0.43%	$40.52Mn

Showing 1 to 20 of 298 holders