ADPT | ADAPTIVE BIOTECH | Owners

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-1.21%
2m
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+0.02%
2m
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-2.90%
2m
Russell 2000$276.67
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2m
Russell 1000$417.25
-1.20%
2m
S&P 400$3,636.94
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S&P 600$1,686.53
+0.65%
2m

ADAPTIVE BIOTECH (ADPT)

NASDAQ

$24.56+$0.15 (+0.62%)

Price as of Oct 22, 2026 7:55 PM EDT

$4.0B
Market Cap
53.98%
1-Year Change
Diagnostics & Research
Industry

Top Holders

Institutional

Mutual Funds

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
VIKING GLOBAL INVESTORS LP	18.79%	30.0M	0 (0.00%)	Jun 30, 2026
BLACKROCK, INC.	9.49%	15.1M	+1.8M (+12.13%)	Jun 30, 2026
BLACKROCK FUNDING, INC. /DE	7.59%	12.1M	+188,005 (+1.55%)	Dec 31, 2024
BLACKROCK INC.	7.31%	11.7M	+473,883 (+4.06%)	Jun 30, 2024
MATRIX CAPITAL MANAGEMENT COMPANY, LLC	7.25%	11.6M	0 (0.00%)	Dec 31, 2021
VANGUARD GROUP INC	7.07%	11.3M	+6,983 (+0.06%)	Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC	4.01%	6.4M	+309,443 (+4.83%)	Jun 30, 2026

Holder	Ownership %	Shares Held	Change (Shares, %)	Report Date
VANGUARD INDEX FUNDS	5.64%	9.0M	+427,697 (+4.75%)	Jun 30, 2026
Ark ETF Trust	1.11%	1.8M	-348,805 (-19.65%)	Jul 31, 2026
ALGER FUNDS	1.10%	1.8M	+29,584 (+1.69%)	Jul 31, 2026
FIDELITY SALEM STREET TRUST	1.07%	1.7M	+1.6M (+91.53%)	Jul 31, 2026
TIAA-CREF FUNDS	0.89%	1.4M	+448,014 (+31.72%)	Jul 31, 2026
OBERWEIS FUNDS	0.76%	1.2M	+441,000 (+36.28%)	Jun 30, 2026
LORD ABBETT DEVELOPING GROWTH FUND, INC.	0.75%	1.2M	-503,506 (-42.16%)	Jul 31, 2026

Current Ownership Distribution

Institutions2.7B (76.69%)
Mutual Funds708.0M (19.85%)
Insiders123.3M (3.46%)
Other0 (0.00%)

Insider Transactions

3.46% (123.3M)
Current InsiderOwnership (%, shares)
0
Number of InsiderBuying (last 12 months)
$0.00
Amount of InsiderBuying (last 12 months)
10
Number of InsiderSelling (last 12 months)
$1.1B
Amount of InsiderSelling (last 12 months)

Insider Name & Title	Type	Date	Transaction Value	Shares	Share Price	Shares After Transactions
RUBINSTEIN JULIE President and COO	Exempt	Oct 21, 2026	$0.00	11,881	$0.00	201,562
RUBINSTEIN JULIE President and COO	Exempt	Oct 21, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 21, 2026	$151,474.75	5,999	$25.25	383,684
RUBINSTEIN JULIE President and COO	Sell	Oct 21, 2026	$150,402.74	5,882	$25.57	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 20, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 20, 2026	$288,987.93	11,781	$24.53	377,902
RUBINSTEIN JULIE President and COO	Sell	Oct 20, 2026	$2,485.00	100	$24.85	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 20, 2026	$0.00	11,881	$0.00	213,443
RUBINSTEIN JULIE President and COO	Exempt	Oct 19, 2026	$0.00	11,881	$0.00	225,324
RUBINSTEIN JULIE President and COO	Exempt	Oct 19, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 19, 2026	$285,738.05	11,881	$24.05	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 13, 2026	$0.00	11,881	$0.00	272,848
RUBINSTEIN JULIE President and COO	Exempt	Oct 13, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 13, 2026	$302,965.50	11,881	$25.50	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 12, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 12, 2026	$232,738.35	9,181	$25.35	380,502
RUBINSTEIN JULIE President and COO	Sell	Oct 12, 2026	$70,389.00	2,700	$26.07	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 12, 2026	$0.00	11,881	$0.00	284,729
RUBINSTEIN JULIE President and COO	Exempt	Oct 09, 2026	$0.00	11,881	$0.00	296,610
RUBINSTEIN JULIE President and COO	Exempt	Oct 09, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 09, 2026	$313,777.21	11,881	$26.41	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 08, 2026	$0.00	11,881	$0.00	308,491
RUBINSTEIN JULIE President and COO	Exempt	Oct 08, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 08, 2026	$304,866.46	11,881	$25.66	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 07, 2026	$144,235.34	11,881	$12.14	389,683
RUBINSTEIN JULIE President and COO	Sell	Oct 07, 2026	$313,658.40	11,881	$26.40	377,802
RUBINSTEIN JULIE President and COO	Exempt	Oct 07, 2026	$0.00	11,881	$0.00	320,372
BOBULSKY SUSAN Chief Commercial Officer, MRD	Sell	Oct 06, 2026	$193,320.00	6,444	$30.00	389,350
RUBINSTEIN JULIE President and COO	Exempt	Oct 06, 2026	$0.00	11,881	$0.00	332,253
RUBINSTEIN JULIE President and COO	Exempt	Oct 06, 2026	$144,235.34	11,881	$12.14	389,683