ADPT: Adaptive Biotechnologies Cor insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 28 sales totaling $5.61M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-21 | Rubinstein Julie | President | $151K | yes |
| 2026-10-21 | Rubinstein Julie | President | $150K | yes |
| 2026-10-20 | Rubinstein Julie | President | $289K | yes |
| 2026-10-20 | Rubinstein Julie | President | $2K | yes |
| 2026-10-19 | Rubinstein Julie | President | $286K | yes |
| 2026-10-16 | Rubinstein Julie | President | $280K | yes |
| 2026-10-16 | Rubinstein Julie | President | $8K | yes |
| 2026-10-15 | Rubinstein Julie | President | $304K | yes |
| 2026-10-14 | Rubinstein Julie | President | $173K | yes |
| 2026-10-14 | Rubinstein Julie | President | $132K | yes |
| 2026-10-13 | Rubinstein Julie | President | $303K | yes |
| 2026-10-12 | Rubinstein Julie | President | $233K | yes |
| 2026-10-12 | Rubinstein Julie | President | $70K | yes |
| 2026-10-09 | Rubinstein Julie | President | $314K | yes |
| 2026-10-08 | Rubinstein Julie | President | $305K | yes |
| 2026-10-07 | Rubinstein Julie | President | $314K | yes |
| 2026-10-06 | Bobulsky Susan | Officer | $193K | yes |
| 2026-10-06 | Rubinstein Julie | President | $257K | yes |
| 2026-10-06 | Rubinstein Julie | President | $31K | yes |
| 2026-10-06 | Rubinstein Julie | President | $27K | yes |
| 2026-10-06 | Rubinstein Julie | President | $15K | yes |
| 2026-10-05 | Rubinstein Julie | President | $193K | yes |
| 2026-10-05 | Rubinstein Julie | President | $154K | yes |
| 2026-10-02 | Rubinstein Julie | President | $334K | yes |
| 2026-10-01 | Rubinstein Julie | President | $168K | yes |
| 2026-10-01 | Rubinstein Julie | President | $166K | yes |
| 2026-10-01 | Lo Francis | Officer | $223K | yes |
| 2026-10-01 | Lo Francis | Officer | $535K | yes |
Institutional ownership (Q2 2026)
301 institutions reported holding $3.17B of Adaptive Biotechnologies Cor on Form 13F (298 the quarter before). 45 opened a new position and 42 sold out. Shares held by institutions: +3%.
| Largest holders | Shares | Value |
|---|---|---|
| VIKING GLOBAL INVESTORS LP | 29,993,708 | $643.37M |
| BlackRock, Inc. | 15,139,159 | $324.73M |
| VANGUARD CAPITAL MANAGEMENT LLC | 6,403,587 | $137.36M |
| WELLINGTON MANAGEMENT GROUP LLP | 5,911,366 | $126.80M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5,476,231 | $117.47M |
| D. E. Shaw & Co., Inc. | 4,625,859 | $99.22M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 4,267,645 | $91.54M |
| GEODE CAPITAL MANAGEMENT, LLC | 3,641,837 | $78.13M |
| STATE STREET CORP | 3,458,388 | $74.18M |
| Invesco Ltd. | 3,094,011 | $66.37M |
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