Adaptive Biotechnologies Corp
ADPT- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001478320
In the last 90 days, Adaptive Biotechnologies Corp insiders filed 0 open-market purchases and 15 sales; 301 institutions reported holding it in 13F filings for Q2 2026, worth $3.34B in total; superinvestors Viking Global Investors and ARK Invest hold it.
Holders of 5% or more of ADPT
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Adaptive Biotechnologies Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 6.70%9.94M shares | – | Apr 17, 20251 filing | Apr 17, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
9 Schedule 13D and 13G filings on Adaptive Biotechnologies Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Jul 9, 20254:07 PM ET | Rubric Capital Management LPand 1 other | 13G/A | 4.12%6.26M shares | –Below 5% | Jun 30, 2025 | SEC |
| Jun 6, 20251:40 PM ET | ARK Investment Management LLCand 1 otherSuperinvestorARK Invest | 13G/A | 2.90%4.40M shares | −2.30 ppfrom 5.20%Below 5% | May 31, 2025 | SEC |
| May 14, 202510:34 AM ET | ARK Investment Management LLCand 1 otherSuperinvestorARK Invest | 13G | 5.20%7.73M shares | +1.21 ppfrom 3.99% | Mar 31, 2025 | SEC |
| May 7, 202511:42 AM ET | ARK Investment Management LLCSuperinvestorARK Invest | 13G/A | 3.99%6.07M shares | −2.40 ppfrom 6.39%Below 5% | Apr 30, 2025 | SEC |
| Apr 17, 20259:35 AM ET | BlackRock, Inc. | 13G/A | 6.70%9.94M shares | – | Mar 31, 2025 | SEC |
| Feb 14, 202511:23 AM ET | ARK Investment Management LLCSuperinvestorARK Invest | 13G/A | 6.39%9.42M shares | – | Dec 31, 2024 | SEC |
| Feb 13, 20252:20 PM ET | Nikko Asset Management Americas, Inc. | 13G/A | 4.63%6.83M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 4, 20256:13 AM ET | Sumitomo Mitsui Trust Holdings, Inc.and 1 other | 13G/A | 4.60%6.83M shares | –Below 5% | Dec 31, 2024 | SEC |
| Jan 27, 20254:00 PM ET | Integrated Core Strategies (US) LLCand 3 others | 13G/A | 4.30%6.29M shares | –Below 5% | Dec 31, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Adaptive Biotechnologies Corp shares.
No Form 144 notices for Adaptive Biotechnologies Corp are on file.