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 5 sales; 160 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
- Market capClose on Nov 10, 2026
- $1.72B
- Insider buysOpen market, last 90 days
- 0
- Insider sellsLast 90 days, $728.9K in total
- 5
- 13F holdersQ2 2026, +20 vs. previous quarter
- 160
- 13F valueReported value at the end of Q2 2026
- $1.14B
- Superinvestors holdingAt the end of Q2 2026
- 1
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $69.6M
- −17.7% year over year
- Net income, FY2025
- -$81.3M
- No comparable prior period
- Free cash flow, FY2025
- -$79.5M
- No comparable prior period
- Revenue, Q3 FY2026
- $25.6M
- +76.6% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Net loss for FY2025: $81.3M (116.7% of revenue).
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 6.75M
- Shares sold short
- Change
- −45.6K
- −0.7% vs. previous
- Days to cover
- 3.34
- At average daily volume
Superinvestors holding PSNL, Q2 2026
Go to the superinvestors tab1 superinvestor reports holding Personalis, Inc. on Form 13F. Percentages are the stock's share of each portfolio.
Latest insider trades
See all insider tradesOpen-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 |
|---|---|---|---|---|---|---|---|---|---|
| Nov 4, 2026 (view filing)4:15 PM ET | Nov 3 | 1 day | Hall Christopher MChief Executive Officer | SSale | −29.1K | $15.87 | −$462.0K | −12.7%199.4K after | |
| 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 |
Top 10 13F holders, Q2 2026
See all 160 holdersThe 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 |
Holders of 5% or more of PSNL
See all 5 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Personalis, Inc..
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Merck & Co., Inc. | 13G | 16.50%14.0M shares | New | Dec 23, 20241 filing | Dec 23, 2024 | SEC |
| Tempus AI, Inc. | 13D/A | 12.60%13.2M shares | −1.90 ppfrom 14.50% | Dec 5, 20235 filings | Jul 21, 2026 | SEC |
| ARK Investment Management LLCSuperinvestorARK Invest | 13G/A | 8.14%7.19M shares | −1.45 ppfrom 9.59% | Jan 11, 20217 filings | May 14, 2025 | SEC |
| BlackRock, Inc. | 13G | 5.90%6.17M shares | +2.40 ppfrom 3.50% | Oct 23, 20244 filings | Jul 29, 2026 | SEC |
| Ameriprise Financial Inc | 13G/A | 5.80%6.09M shares | −1.30 ppfrom 7.10% | Feb 17, 20262 filings | Aug 14, 2026 | SEC |
Politician trades
All politician trades in PSNL1 member of Congress reported 3 trades in Personalis, Inc. since 2020. Newest filings:
| Filed | Politician | Type | Amount |
|---|---|---|---|
| Jun 4, 2020 |  Brian J. Mast House · FL | Sell | $15K-$50K |
| May 4, 2020 | Brian J. Mast House · FL | Sell | $1K-$15K |
| Mar 4, 2020 | Brian J. Mast House · FL | Buy | $15K-$50K |
House · FL · Jun 4, 2020
Sell$15K-$50K
House · FL · May 4, 2020
Sell$1K-$15K
House · FL · Mar 4, 2020
Buy$15K-$50K