Company · Ownership research

Adaptive Biotechnologies Corp ADPT

CIK 0001478320 · CUSIP 00650F109

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 00650F109 (ADPT), not CUSIP 00650F909 (ADPT), CUSIP 00650F959 (ADPT), and does not merge CUSIPs.

This page lists the top 20 of 283 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VIKING GLOBAL INVESTORS LP CIK 1103804 · View history	$487.10M 29,993,708 shares	1.29%	0(0.00%)Unchanged	SEC filing ↗ Feb 17, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$216.54M 13,333,559 shares	0.00%	-24.42K(-0.20%)Reduced	SEC filing ↗ Feb 12, 2026	▾
03	VANGUARD GROUP INC CIK 102909 · View history	$183.22M 11,282,152 shares	0.00%	+6.98K(+0.10%)Added	SEC filing ↗ Jan 29, 2026	▾
04	PRICE T ROWE ASSOCIATES INC /MD/ CIK 80255 · View history	$71.25M 4,387,361 shares	0.01%	+3.30M(+303.40%)Added	SEC filing ↗ Feb 17, 2026	▾
05	WESTFIELD CAPITAL MANAGEMENT CO LP CIK 1177719 · View history	$65.94M 4,060,481 shares	0.27%	+4.06MNew	SEC filing ↗ Feb 11, 2026	▾
06	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$57.04M 3,511,855 shares	0.00%	+110.83K(+3.30%)Added	SEC filing ↗ Feb 9, 2026	▾
07	STATE STREET CORP CIK 93751 · View history	$51.67M 3,181,644 shares	0.00%	+102.36K(+3.30%)Added	SEC filing ↗ Feb 13, 2026	▾
08	Invesco Ltd. CIK 914208 · Amended · View history	$50.47M 3,107,653 shares	0.00%	+2.22M(+248.80%)Added	SEC filing ↗ Feb 19, 2026	▾
09	LORD, ABBETT & CO. LLC CIK 728100 · View history	$50.03M 3,080,759 shares	0.15%	+1.85M(+151.20%)Added	SEC filing ↗ Feb 13, 2026	▾
10	GOLDMAN SACHS GROUP INC CIK 886982 · Amended · View history	$47.13M 2,902,269 shares	0.01%	+1.02M(+54.40%)Added	SEC filing ↗ Mar 25, 2026	▾
11	Driehaus Capital Management LLC CIK 938206 · View history	$44.83M 2,760,387 shares	0.30%	-259.55K(-8.60%)Reduced	SEC filing ↗ Feb 17, 2026	▾
12	JENNISON ASSOCIATES LLC CIK 53417 · View history	$43.44M 2,674,668 shares	0.03%	+1.36M(+103.90%)Added	SEC filing ↗ Jan 30, 2026	▾
13	AMERIPRISE FINANCIAL INC CIK 820027 · View history	$42.08M 2,590,984 shares	0.01%	-3.38M(-56.60%)Reduced	SEC filing ↗ Feb 17, 2026	▾
14	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history	$39.33M 2,422,089 shares	0.02%	-19.31K(-0.80%)Reduced	SEC filing ↗ Feb 13, 2026	▾
15	FRED ALGER MANAGEMENT, LLC CIK 3520 · View history	$36.47M 2,245,418 shares	0.14%	-268.82K(-10.70%)Reduced	SEC filing ↗ Feb 17, 2026	▾
16	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$35.16M 2,165,327 shares	0.01%	+1.66M(+332.10%)Added	SEC filing ↗ Feb 17, 2026	▾
17	ARK Investment Management LLC CIK 1697748 · View history	$34.74M 2,138,960 shares	0.23%	-1.03M(-32.40%)Reduced	SEC filing ↗ Feb 11, 2026	▾
18	Sumitomo Mitsui Trust Group, Inc. CIK 1475365 · View history	$31.63M 1,947,963 shares	0.02%	-1.70M(-46.60%)Reduced	SEC filing ↗ Jan 23, 2026	▾
19	Amova Asset Management Americas, Inc. CIK 1480751 · View history	$31.62M 1,947,963 shares	0.37%	-1.70M(-46.60%)Reduced	SEC filing ↗ Feb 11, 2026	▾
20	NOMURA ASSET MANAGEMENT INTERNATIONAL INC. CIK 921739 · View history	$31.51M 1,940,376 shares	0.05%	—	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 283 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

283

Cancelled or null records excluded

Disclosed shares

150,289,193

Not deduplicated across managers

Disclosed value

$2.44B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

Adaptive Biotechnologies Corp · Q4 2025

Explore all 283 reporting institutions.

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.