ADPT — Adaptive Biotechnologies Corp
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2019-06-27.
Performance
Technicals
Others in Healthcare
Measured signals that fired on ADPT
| date | signal | measured base rate |
|---|---|---|
| 2026-08-20 | Cluster sale: three or more insiders insider | -0.36% over 21 days · t = -3.35 · n = 21,529 statistically distinguishable from its control group |
| 2026-08-04 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-04 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-07-16 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-26 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-06-24 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-18 | ROBINS CHAD M CEO and Chairman | Open-market sale | 278.5K | 24.48 | 6.8M |
| 2026-08-18 | ROBINS CHAD M CEO and Chairman | Option exercise | 278.7K | 6.55 | 1.8M |
| 2026-08-18 | HERSHBERG ROBERT Director | Open-market sale | 15.7K | 24.41 | 382.4K |
| 2026-08-18 | HERSHBERG ROBERT Director | Open-market sale | 15.0K | 24.39 | 365.9K |
| 2026-08-18 | HERSHBERG ROBERT Director | Option exercise | 15.0K | 6.32 | 94.8K |
| 2026-08-18 | ROBINS CHAD M CEO and Chairman | Open-market sale | 204 | 25.14 | 5.1K |
| 2026-08-17 | ROBINS CHAD M CEO and Chairman | Open-market sale | 318.8K | 25.08 | 8.0M |
| 2026-08-17 | ROBINS CHAD M CEO and Chairman | Option exercise | 321.3K | 6.55 | 2.1M |
| 2026-08-17 | NEUPERT PETER M Director | Open-market sale | 69.7K | 25.16 | 1.8M |
| 2026-08-17 | NEUPERT PETER M Director | Open-market sale | 40.0K | 25.10 | 1.0M |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| VIKING GLOBAL INVESTORS LP | 416.3M | 30.0M |
| BlackRock, Inc. | 184.6M | 13.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | 84.6M | 6.1M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 75.5M | 5.4M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 62.3M | 4.5M |
| Invesco Ltd. | 61.8M | 4.5M |
| WELLINGTON MANAGEMENT GROUP LLP | 53.5M | 3.9M |
| GEODE CAPITAL MANAGEMENT, LLC | 50.5M | 3.6M |
| GOLDMAN SACHS GROUP INC | 45.0M | 3.2M |
| STATE STREET CORP | 44.8M | 3.2M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
Ask the AI about ADPT
The assistant reads every block on this page — price history, filings, insider transactions, institutional positions, short volume, macro and the measured base rates — and says what it implies, quoting the number behind each claim and declaring what it does not have.
Everything on this page is live in the terminal.
Charts, filings, insider flow and the AI — open without an account.
Free plan for good. Pro is $69.99/mo, or $4.99 for a 7-day trial. See the plans →