Adaptive Biotechnologies ADPT Institutional Ownership

NASDAQ ADPT

$23.95 -0.07 (-0.29%)

At close: Oct 19, 2026 · 4:00 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

97.15%

▲+2.26 pp QoQ

Shares Held by Institutions

155.30Mn

of 159.86Mn outstanding

▲+2.49% QoQ

Shares Outstanding

159.86Mn

4.56Mn held outside 13F filers

Institutional Investors

298

filed 13F for Jun 2026

▲+5 vs prior quarter

Net Shares Added (QoQ)

+3.77Mn

accumulated since last quarter

Value of Holdings

$3.97Bn

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

Updated Oct 11, 2026

Adaptive Biotechnologies Corp (NASDAQ:ADPT) counted 298 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

These investors held 97.15% of outstanding shares in Q2 2026, up from 94.88% the quarter before.
Total shares held in Adaptive Biotechnologies rose 2.49% versus Q1 2026, while the number of holders rose 25.74% versus Q2 2025.
Of these 298 holders, 160 added to their positions, 86 reduced their stakes and 52 left their positions unchanged.
Institutional investors held 155.3Mn shares of Adaptive Biotechnologies in total at the end of Q2 2026, up 3.77Mn from the prior quarter and up 9.43Mn from a year earlier.
Viking Global Investors LP was the top holder of Adaptive Biotechnologies as of June 30, 2026, with 29.99Mn shares, or 18.76% of shares outstanding.
Holders that added the most shares of Adaptive Biotechnologies in Q2 2026 were D. E. Shaw & Co., Inc. (+2.66Mn shares), Wellington Management Group LLP (+2.05Mn shares), BlackRock, Inc. (+1.84Mn shares), T. Rowe Price Associates Inc (+1.1Mn shares) and Perceptive Advisors LLC (+1.06Mn shares).
The largest position reductions in ADPT for Q2 2026 were by Ameriprise Financial Inc (-1.93Mn shares), Principal Financial Group Inc (-1.67Mn shares), Invesco Ltd. (-1.36Mn shares), Capricorn Fund Managers Ltd (-1.27Mn shares) and Westfield Capital Management Co LP (-1.17Mn shares).
Business Quant data shows the 10 biggest positions in Adaptive Biotechnologies as of Q2 2026 were held by Viking Global Investors LP (29.99Mn shares), BlackRock, Inc. (15.14Mn shares), Vanguard Capital Management LLC (6.4Mn shares), Wellington Management Group LLP (5.91Mn shares), Vanguard Portfolio Management LLC (5.48Mn shares), D. E. Shaw & Co., Inc. (4.63Mn shares), Westfield Capital Management Co LP (4.27Mn shares), Geode Capital Management, LLC (3.64Mn shares), State Street Corp (3.46Mn shares) and Invesco Ltd. (3.09Mn shares).

Form 13F Holdings

298 Institutional Holders

Report period 30 Jun, 2026

Total shares held 155.30Mn

Of outstanding 97.15%

#	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