Personalis, Inc.
PSNL- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0001527753
In the last 90 days, Personalis, Inc. insiders filed 0 open-market purchases and 7 sales; 158 institutions reported holding it in 13F filings for Q2 2026, worth $1.14B in total; ARK Invest is the only superinvestor holding it.
Key figures
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $3.36M in total
- 7
- 13F holdersQ2 2026, +20 vs. previous quarter
- 158
- 13F valueReported value at the end of Q2 2026
- $1.14B
- Superinvestors holdingAt the end of Q2 2026
- 1
Price chart
Superinvestors holding PSNL, Q2 2026
1 superinvestor reports holding Personalis, Inc. on Form 13F. Percentages are the stock's share of each portfolio.
Latest insider trades
Open-market purchases and sales by Personalis, Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 22, 2026 (view filing)4:10 PM ET | Sep 18 | 4 days | Moore Stephen MichaelSVP and Chief Legal Officer | SSale | −2.07K | $16.22 | −$33.5K | −2.2%90.3K after | |
| Sep 22, 2026 (view filing)4:10 PM ET | Sep 18 | 4 days | Chen RichardPresident and CMO | SSale | −4.00K | $16.22 | −$64.8K | −2.3%169.9K after | |
| Sep 22, 2026 (view filing)4:10 PM ET | Sep 18 | 4 days | Hall Christopher MChief Executive Officer | SSale | −7.46K | $16.22 | −$121.0K | −3.2%228.5K after | |
| Sep 22, 2026 (view filing)4:10 PM ET | Sep 18 | 4 days | Tachibana AaronCFO AND COO | SSale | −2.93K | $16.22 | −$47.5K | −1.5%195.9K after | |
| Jul 15, 2026 (view filing)9:27 PM ET | Jul 15 | Same day | Chen RichardPresident and CMO | SSale | −100.0K | $15.15 | −$1.51M | −36.5%173.9K after | 10b5-1 |
| Jul 9, 2026 (view filing)8:46 PM ET | Jul 9 | Same day | Hall Christopher MChief Executive Officer | SSale | −100.0K | $15.08 | −$1.51M | −29.8%236.0K after | 10b5-1 |
| Jun 29, 2026 (view filing) | Jun 29 | Same day | Tachibana AaronCFO AND COO | SSale | −4.98K | $14.00 | −$69.7K | −2.4%198.8K after | 10b5-1 |
| Jun 26, 2026 (view filing) | Jun 26 | Same day | Hall Christopher MChief Executive Officer | SSale | −100.0K | $13.15 | −$1.31M | −29.8%236.0K after | 10b5-1 |
| Jun 26, 2026 (view filing) | Jun 26 | Same day | Tachibana AaronCFO AND COO | SSale | −51.3K | $13.18 | −$675.5K | −20.5%198.8K after | 10b5-1 |
| Jun 5, 2026 (view filing) | Jun 4 | 1 day | Tachibana AaronCFO AND COO | SSale | −40.0K | $12.01 | −$480.4K | −16.7%198.8K after | 10b5-1 |
Top 10 13F holders, Q2 2026
The largest institutional positions in Personalis, Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Merck & Co., Inc. | 14,044,943 | $188.2M | 35.75% | 00.0% | Unchanged |
| ARK Investment Management LLCSuperinvestorARK Invest | 8,271,339 | $110.8M | 0.72% | +327,227+4.1% | Added |
| BlackRock, Inc. | 7,082,491 | $94.9M | 0.00% | +1,692,606+31.4% | Added |
| Lightspeed Management Company, L.L.C. | 6,101,850 | $81.8M | 3.40% | −2,058,884−25.2% | Reduced |
| Ameriprise Financial Inc | 6,086,315 | $81.6M | 0.02% | −1,506,492−19.8% | Reduced |
| Deep Track Capital, LP | 4,000,000 | $53.6M | 0.79% | +1,000,000+33.3% | Added |
| Standard Life Aberdeen plc | 3,747,290 | $50.2M | 0.07% | +258,982+7.4% | Added |
| Vanguard Capital Management LLC | 3,010,150 | $40.3M | 0.00% | +141,687+4.9% | Added |
| Casdin Capital, LLC | 2,550,000 | $34.2M | 1.71% | +950,000+59.4% | Added |
| Kennedy Capital Management, Inc. | 2,364,282 | $31.7M | 0.56% | +180,710+8.3% | Added |