ADPT · Adaptive Biotechnologies Corp · Holdings

$24.46 +0.04 (+0.16%)

Russell 2000 member Rebalance outlook locked

Market Cap

$3.95B

159.60M

Volume · Oct 20 1.25M Avg daily vol (3M) 2.3M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP → See every holder of ADPT: 13F, 13D and 13G, insiders and funds →

Institutional holdings are being reconciled with SEC filings. Holder totals and changes may be incomplete until reconciliation finishes.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 302

Total Value: $35,405,870

Total Shares: 162,307,905

Showing 1–100 of 307 holdings by value · page 1 of 4

Institutional Ownership Trend

27 quarters

Superinvestors Holding ADPT

All superinvestors →

Ray Dalio $0 Andreas Halvorsen $0 Joel Greenblatt $0

Who Holds ADPT

Last 8 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 300 filers, like-for-like change +2.6%; actively managed books +1.0%; index-like books +7.3%.

Holder type	Share	Filers	Change	New	Exited
Registered adviser	57.9%	157	+0.3%	26	27
Exempt adviser	0.7%	7	-55.0%	2	3
Adviser	5.6%	8	-21.0%	0	0
Bank	6.3%	20	+12.6%	1	0
Insurer	0.1%	2	-91.1%	0	0
Broker-dealer	0.1%	1	+27.5%	0	0
Benefit plan	0.2%	4	-1.4%	0	0
Non-US	2.0%	8	-15.4%	1	1
Holding company	17.1%	9	+14.7%	0	0
Unknown	10.1%	84	+49.0%	15	10

Style	Share	Filers	Change	New	Exited
Index-like	26.7%	31	+7.3%	0	0
Systematic-like	6.1%	24	+25.2%	8	6
Concentrated	1.3%	41	+19.2%	5	4
Diversified active	65.9%	204	-1.1%	32	30
Unknown	0.0%	0	-100.0%	0	1
Not measured	0.0%	0	—	0	0

Turnover	Share	Filers	Change	New	Exited
Low turnover	35.0%	151	-2.2%	13	10
Medium turnover	27.3%	83	+6.4%	10	7
High turnover	27.8%	43	+2.8%	16	19
Unknown	9.9%	23	+9.9%	6	5
Not measured	0.0%	0	—	0	0

Holding horizon	Share	Filers	Change	New	Exited
Short horizon	11.7%	43	+2.2%	18	15
Medium horizon	14.6%	45	+13.3%	9	8
Long horizon	45.5%	191	+0.9%	16	13
Unknown	28.2%	21	+0.7%	2	5
Not measured	0.0%	0	—	0	0

13F book size	Share	Filers	Change	New	Exited
Under $1B	2.4%	60	-18.3%	14	18
$1B to $10B	7.9%	73	-9.6%	15	14
$10B to $100B	37.6%	96	-1.6%	13	7
$100B or more	52.2%	71	+9.5%	3	2
Not measured	0.0%	0	—	0	0

Client base	Share	Filers	Change	New	Exited
Individuals and high net worth	2.1%	72	+19.6%	9	11
Pooled investment vehicles	26.4%	29	-5.4%	10	13
Registered funds and BDCs	19.4%	20	+4.5%	3	2
Pension and profit sharing plans	0.0%	2	+6.7%	0	0
Insurance companies	0.4%	4	+71.4%	0	0
Governments and sovereign funds	1.4%	6	+15.9%	1	1
Corporations	0.0%	1	0.0%	0	0
Other investment advisers	0.0%	3	+0.4%	0	0
Other	0.1%	2	+117.8%	0	0
Diversified	8.2%	18	+1.4%	3	0
Unknown	42.1%	143	+5.9%	19	14

Private funds	Share	Filers	Change	New	Exited
Hedge funds	35.8%	48	-3.9%	12	13
Private equity funds	0.5%	9	-0.1%	1	0
Venture capital funds	0.0%	2	-96.7%	0	1
Real estate funds	0.0%	4	+198.8%	1	1
Securitized asset funds	0.1%	1	-0.1%	0	0
Other private funds	6.7%	17	+5.6%	3	1
Mixed private funds	0.2%	4	+19.9%	1	0
Private funds, type not stated	1.2%	4	-7.9%	2	3
No private funds	14.0%	75	+7.5%	8	11
Unknown	41.4%	136	+8.3%	17	11

Location	Share	Filers	Change	New	Exited
United States	93.3%	239	+4.9%	33	31
Outside the US	6.7%	61	-21.1%	12	10

The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 2 holders with no observed 2026-03-31 13F and 4 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.

Conviction and Crowding

300 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

0.000% of filers hold it in their top 10

Mar 31, 2026: 0

Holders above 5%

median weight —

Mar 31, 2026: 0

Crowding

47.7%

of shares outstanding, 97th percentile

Mar 31, 2026: 47.9%

Private-fund advisers

42.5%

of shares outstanding

Institutional ownership

97.4%

101.0% of the estimated free float above 100%: filers can report lent or client shares more than once

Top 10 holders

52.6%

of 13F shares, Herfindahl 0.058

Active holders

+1.0%

like-for-like share change of active filers

5% stakes on record

0 13D, 3 13G (2 institutional, 0 passive, 1 exempt)

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Shareholder Targets

13F filers that own its peers but not ADPT, quarter ended Jun 30, 2026

ADPT has no holder-overlap peers, so these filers hold the largest Healthcare stocks: LLY, JNJ, ABBV, UNH, MRK, TMO, AMGN, AZN, GILD, ABT, ISRG, VRTX, CVS, DHR, SYK, BMY, PFE, MDT, MCK, ELV. 5,997 filers in all.

#	Filer	In peers	Of book	Largest peers
1	LILLY ENDOWMENT INC Unknown, Unknown	$108,400,867,760 1 held	100.0%	LLY
2	Capital World Investors Adviser, Diversified active	$89,827,396,720 14 held	10.6%	LLY, VRTX, UNH
3	NORGES BANK Non-US, Index-like	$70,478,623,091 20 held	7.00%	LLY, JNJ, ABBV
4	Capital Research Global Investors Adviser, Diversified active	$66,678,636,531 16 held	9.25%	LLY, VRTX, ABBV
5	Capital International Investors Adviser, Diversified active	$36,212,541,834 15 held	7.39%	LLY, AZN, ABBV
6	Fisher Asset Management, LLC Adviser, Diversified active	$29,973,271,178 20 held	9.57%	LLY, MRK, UNH
7	STATE FARM MUTUAL AUTOMOBILE INSURANCE CO Insurer, Diversified active	$27,995,782,388 8 held	19.1%	LLY, JNJ, MRK
8	PRIMECAP MANAGEMENT CO/CA/ Registered adviser, Diversified active	$20,279,000,323 12 held	12.0%	LLY, AZN, AMGN
9	Dodge & Cox Registered adviser, Diversified active	$14,229,328,366 16 held	7.45%	CVS, UNH, GILD
10	HSBC HOLDINGS PLC Unknown, Index-like	$12,870,030,910 20 held	6.26%	LLY, JNJ, UNH

Fund Ownership of ADPT by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 14.98% of shares outstanding.

Fund type	Of shares outstanding	Change	Shares	Funds
Index funds	3.21%	+0.50 pp	5,130,594	58
Index ETFs	11.77%	+0.21 pp	18,782,694	43
Active ETFs	2.02%	-0.39 pp	3,217,633	17
Active funds	15.98%	+4.39 pp	25,496,412	151
Unclassified	0.61%	+0.61 pp	980,435	5
All registered funds	33.59%	+5.32 pp	53,607,768	274

How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Holder type: Registered adviser 155 Exempt adviser 7 Adviser 8 Bank 21 Insurer 2 Broker-dealer 1 Benefit plan 4 Non-US 8 Holding company 9 Unknown 87

Showing 100 of 307

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

ESSEX INVESTMENT MANAGEMENT CO LLC

$11,610,141

32.79%

401,735

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 223709	401,735	$11,610,141	100.0%	Sole

WASATCH ADVISORS LP

$8,627,401

24.37%

298,526

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	298,526	$8,627,401	100.0%	Sole

Y-Intercept (Hong Kong) Ltd

$3,626,458

10.24%

125,483

BURNEY CO/

$3,039,124

8.58%

105,160

Robertson Stephens Wealth Management, LLC

$2,592,850

7.32%

89,718

Edge Wealth Management LLC

$2,514,300

7.10%

87,000

WoodTrust Financial Corp

$606,900

1.71%

21,000

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$546,325

1.54%

18,904

Vontobel Holding Ltd.

$476,850

1.35%

16,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK VONTOBEL AG	16,500	$476,850	100.0%	Defined

GAMMA Investing LLC

$386,277

1.09%

13,366

NORDEN GROUP LLC

$314,778

0.89%

10,892

Net Worth Advisory Group

$263,279

0.74%

9,110

DLK Investment Management, LLC

$245,650

0.69%

8,500

QUADRANT CAPITAL GROUP LLC

$242,644

0.69%

8,396

NISA INVESTMENT ADVISORS, LLC

$183,254

0.52%

6,341

GoalVest Advisory LLC

$23,987

0.07%

830

Ares Financial Consulting, LLC

$20,663

0.06%

715

Essential Partners LLC

$17,889

0.05%

619

Versant Capital Management, Inc

$15,432

0.04%

534

Owl Creek Wealth Partners LLC

$12,629

0.04%

437

True Wealth Design, LLC

$7,774

0.02%

269

Physician Wealth Advisors, Inc.

$7,658

0.02%

265

GK Wealth Management LLC

$6,964

0.02%

241

Farther Finance Advisors, LLC

$4,219

0.01%

146

Private Wealth Management Group, LLC

$3,843

0.01%

133

Fortitude Family Office, LLC

$3,612

0.01%

125

IFP Advisors, Inc

$3,265

0.01%

113

CoreCap Advisors, LLC

$809

0.00%

Perkins Coie Trust Co

$578

0.00%

Blue Trust, Inc.

$317

0.00%

Vanguard Personalized Indexing Management, LLC

—

35,739

STRS OHIO

—

53,200

Bridgewater Associates, LP

—

40,087

PERCEPTIVE ADVISORS LLC

—

1,217,325

Ensign Peak Advisors, Inc

—

120,770

Man Group plc

—

91,921

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AHL Partners LLP	117	$0	—	Defined
Numeric Investors LLC	91,804	$0	—	Defined

Ameritas Investment Partners, Inc.

—

13,987

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	13,987	$0	—	Other

SUSQUEHANNA INTERNATIONAL GROUP, LLP

—

166,081

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	166,081	$0	—	Other

Freestone Grove Partners LP

—

881,688

AMERIPRISE FINANCIAL INC

—

1,087,754

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	1,024,394	$0	—	Defined
Ameriprise Trust Co	63,169	$0	—	Defined
Ameriprise Financial Services, LLC	191	$0	—	Defined

Merit Financial Group, LLC

—

22,330

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Orion Custom Indexing	106	$0	—	Other
AQR Capital Management	2,180	$0	—	Other
Parametric	60	$0	—	Other
Held directly	19,984	$0	—	Sole

Penserra Capital Management LLC

—

23,102

CVA Family Office, LLC

—

STATE STREET CORP

—

3,458,388

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	3,458,388	$0	—	Defined

D.A. DAVIDSON & CO.

—

21,450

Nykredit A/S

—

1,429

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nykredit Bank A/S	1,429	$0	—	Defined

Bank of New York Mellon Corp

—

429,229

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	136,884	$0	—	Defined
The Bank of New York Mellon	287,421	$0	—	Defined
BNY Mellon, NA joint	4,623	$0	—	Defined
BNY Mellon Advisors, Inc.	300	$0	—	Defined
Held directly	1	$0	—	Defined

Schonfeld Strategic Advisors LLC

—

51,183

VANGUARD PORTFOLIO MANAGEMENT LLC

—

5,476,231

Quantinno Capital Management LP

—

47,905

Ares Systematic Credit Ltd

—

19,359

GF FUND MANAGEMENT CO. LTD.

—

3,260

CAPTRUST FINANCIAL ADVISORS

—

23,459

NORTHERN TRUST CORP

—

1,507,351

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	1,394,366	$0	—	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	89,082	$0	—	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	23,903	$0	—	Other

CIBC Bancorp USA Inc.

—

12,367

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CIBC Private Wealth Advisors, Inc.	3,858	$0	—	Defined
CIBC WORLD MARKETS CORP	8,509	$0	—	Defined

SG Americas Securities, LLC

—

117,909

OBERWEIS ASSET MANAGEMENT INC/

—

1,258,751

Vanguard Global Advisers, LLC

—

63,932

PERSONAL CFO SOLUTIONS, LLC

—

11,370

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Investment Management Inc. joint	11,370	$0	—	Sole

NATIONAL BANK OF CANADA /FI/

—

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
National Bank Financial Inc.	23	$0	—	Defined

Jupiter Topco LLC

—

46,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JANUS HENDERSON INVESTORS UK Ltd	46,900	$0	—	Defined

SummitTX Capital, L.P.

—

65,640

ENVESTNET ASSET MANAGEMENT INC

—

78,503

PNC FINANCIAL SERVICES GROUP, INC.

—

12,114

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	12,104	$0	—	Defined
PNC Wealth Management LLC	10	$0	—	Defined

PRINCIPAL FINANCIAL GROUP INC

—

38,829

FINANCIAL CONSULATE, INC

—

EverSource Wealth Advisors, LLC

—

842

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMSS Wesson Wealth Solutions, LLC	166	$0	—	Sole
Held directly	676	$0	—	Sole

OSAIC HOLDINGS, INC.

—

136,331

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	135,053	$0	—	Defined
Osaic Advisory Services, LLC	1,278	$0	—	Defined

Allworth Financial LP

—

1,642

Erste Asset Management GmbH

—

35,700

WPG Advisers, LLC

—

158

Lisanti Capital Growth, LLC

—

325,155

Strive Financial Group ,LLC

—

2,430

Granite Investment Partners, LLC

—

757,217

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

—

70,975

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	70,975	$0	—	Defined

GILDER GAGNON HOWE & CO LLC

—

35,056

Voleon Capital Management LP

—

46,122

LORD, ABBETT & CO. LLC

—

2,474,814

VIRTUS ADVISERS, LLC

—

16,197

JANE STREET GROUP, LLC

—

54,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	54,200	$0	—	Defined

Bellevue Group AG

—

89,439

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Bellevue Asset Management AG	89,439	$0	—	Defined

Squarepoint Ops LLC

—

102,897

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	102,897	$0	—	Defined

RHUMBLINE ADVISERS

—

199,336

Stone House Investment Management, LLC

—

RENAISSANCE TECHNOLOGIES LLC

—

302,800

VOYA INVESTMENT MANAGEMENT LLC

—

302,141

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Voya Investment Management Co. LLC joint	302,141	$0	—	Defined

Russell Investments Group, Ltd.

—

78,722

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC joint	49,604	$0	—	Defined
Russell Investments Capital, LLC	3,252	$0	—	Defined
Russell Investments Trust Company joint	25,866	$0	—	Other

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

—

222,280

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	3,576	$0	—	Defined
UBS Asset Management Switzerland AG	161,399	$0	—	Sole
UBS Asset Management (UK) Ltd.	18,176	$0	—	Defined
Held directly	39,129	$0	—	Defined

Sterling Capital Management LLC

—

541

VIKING GLOBAL INVESTORS LP

—

29,993,708

JONES FINANCIAL COMPANIES LLLP

—

3,967

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	3,967	$0	—	Sole

SUSQUEHANNA INTERNATIONAL GROUP, LLP

—

1,971,300

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	1,971,300	$0	—	Other

TRUIST FINANCIAL CORP

—

12,611

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TRUIST BANK /NC/	2,176	$0	—	Defined
Truist Advisory Services, Inc.	10,435	$0	—	Defined

CITADEL ADVISORS LLC

—

181,356

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	181,356	$0	—	Defined

AVENIR CORP

—

74,865

SIGNATUREFD, LLC

—

4,145

BNP PARIBAS ARBITRAGE, SA

—

500,455

WESTFIELD CAPITAL MANAGEMENT CO LP

—

4,267,645

BlackRock, Inc.

—

15,139,159

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	353,085	$0	—	Sole
BlackRock Investment Management (Australia) Ltd	406	$0	—	Sole
BlackRock Asset Management Canada Ltd	35,257	$0	—	Sole
BlackRock Investment Management, LLC	526,008	$0	—	Sole
BLACKROCK ADVISORS LLC	1,036,848	$0	—	Sole
BlackRock Fund Advisors	7,147,490	$0	—	Sole
BlackRock Institutional Trust Company, N.A.	5,062,220	$0	—	Sole
BlackRock Japan Co. Ltd	12,123	$0	—	Sole
BlackRock Fund Managers Ltd.	23,324	$0	—	Sole
BlackRock Investment Management (UK) Ltd.	143,806	$0	—	Sole
BlackRock (Netherlands) B.V.	41,912	$0	—	Sole
BlackRock Asset Management Ireland Ltd	461,685	$0	—	Sole
BlackRock (Luxembourg) S.A.	6,429	$0	—	Sole
BlackRock Asset Management Schweiz AG	21,157	$0	—	Sole
Aperio Group, LLC	266,626	$0	—	Sole
SpiderRock Advisors, LLC	783	$0	—	Sole

EP Wealth Advisors, LLC

—

124,451

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Key facts CIK 1478320 CUSIP 00650F109 13F (30d) 32 filings 32 filers Visit website Investor relations