PSNL — Personalis, Inc.
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 2019-06-20.
Performance
Technicals
Others in Healthcare
Measured signals that fired on PSNL
| date | signal | measured base rate |
|---|---|---|
| 2026-08-19 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-08-10 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-21 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-07-16 | Volume shock without a price move price | -1.33% over 21 days · t = -4.53 · n = 16,432 statistically distinguishable from its control group |
| 2026-07-02 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-25 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 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 |
|---|---|---|---|---|---|
| 2026-07-15 | Chen Richard President and CMO | Open-market sale 10b5-1 plan | 100.0K | 15.15 | 1.5M |
| 2026-07-15 | Chen Richard President and CMO | Option exercise 10b5-1 plan | 100.0K | 2.44 | 244.0K |
| 2026-07-09 | Hall Christopher M Chief Executive Officer | Open-market sale 10b5-1 plan | 100.0K | 15.08 | 1.5M |
| 2026-07-09 | Hall Christopher M Chief Executive Officer | Option exercise 10b5-1 plan | 100.0K | 1.61 | 161.0K |
| 2026-06-29 | Tachibana Aaron CFO AND COO | Open-market sale 10b5-1 plan | 5.0K | 14.00 | 69.7K |
| 2026-06-29 | Tachibana Aaron CFO AND COO | Option exercise 10b5-1 plan | 5.0K | 5.32 | 26.5K |
| 2026-06-26 | Hall Christopher M Chief Executive Officer | Open-market sale 10b5-1 plan | 100.0K | 13.15 | 1.3M |
| 2026-06-26 | Tachibana Aaron CFO AND COO | Open-market sale 10b5-1 plan | 51.3K | 13.18 | 675.5K |
| 2026-06-26 | Tachibana Aaron CFO AND COO | Option exercise 10b5-1 plan | 28.8K | 9.16 | 264.1K |
| 2026-06-26 | Hall Christopher M Chief Executive Officer | Option exercise 10b5-1 plan | 100.0K | 1.61 | 161.0K |
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 |
|---|---|---|
| Merck & Co., Inc. | 89.5M | 14.0M |
| LIGHTSPEED MANAGEMENT COMPANY, L.L.C. | 52.0M | 8.2M |
| ARK Investment Management LLC | 50.6M | 7.9M |
| AMERIPRISE FINANCIAL INC | 48.4M | 7.6M |
| BlackRock, Inc. | 34.3M | 5.4M |
| Aberdeen Group plc | 22.2M | 3.5M |
| Deep Track Capital, LP | 19.1M | 3.0M |
| AIGH Capital Management LLC | 18.5M | 2.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | 18.3M | 2.9M |
| KENNEDY CAPITAL MANAGEMENT LLC | 13.9M | 2.2M |
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
- Personalis, Inc. (PSNL) filed form 8-K · 2026-08-20 · SEC EDGAR
- Moderna Doubles, Gold Rallies To $4,500 As Dollar Sinks: Stock Market Today · 2026-08-19 · benzinga
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