PSNL · Insider trading · 13F holders · Congress trades
Personalis, Inc. (PSNL)
Who is buying and selling PSNL: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 18
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $267K
- Congress trades, 12 months
- 3
PSNL at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 4 PSNL insiders filed 4 sales worth $267K on SEC Form 4, and no open-market purchases.
- 18 13F filers hold PSNL among their 50 largest positions, worth $572.3M combined, including Cathie Wood. The biggest bets by portfolio weight are Merck & Co., Inc. (35.8%), Perkins Capital Management Inc (2.4%) and AIGH Capital Management LLC (2.1%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
- Members of Congress have disclosed 3 PSNL trades since 2020, 1 purchase and 2 sales in the past year; the latest was Brian J. Mast (R-FL), selling $15K–50K on May 19, 2020.
- PSNL last closed at $15.93 on Oct 29, 2026.
PSNL insider trading
Between Aug 1, 2026 and Oct 29, 2026, 4 PSNL insiders filed 4 sales worth $267K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 22, 2026 | Hall Christopher M | Chief Executive Officer, Director | Sale | 7,459 | $16.22 | $121K | SEC |
| Sep 22, 2026 | Chen Richard | President and CMO | Sale | 3,998 | $16.22 | $65K | SEC |
| Sep 22, 2026 | Tachibana Aaron | CFO AND COO | Sale | 2,931 | $16.22 | $48K | SEC |
| Sep 22, 2026 | Moore Stephen Michael | SVP and Chief Legal Officer | Sale | 2,068 | $16.22 | $34K | SEC |
Who owns PSNL? Hedge funds and superinvestors
18 13F filers hold PSNL among their 50 largest positions, worth $572.3M combined, including Cathie Wood. The biggest bets by portfolio weight are Merck & Co., Inc. (35.8%), Perkins Capital Management Inc (2.4%) and AIGH Capital Management LLC (2.1%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
Superinvestors holding PSNL: Cathie Wood 0.7%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Merck & Co., Inc.Corporation | 35.8% | $188.2M | 14,044,943 | +0.0% shares | Q2 2026 |
| Cathie WoodMutual fund manager | 0.7% | $110.8M | 8,271,339 | +4.1% shares | Q2 2026 |
| Lightspeed Management Company, L.l.c.Hedge fund | 3.4% | $81.8M | 6,101,850 | -25.2% shares | Q2 2026 |
| Deep Track Capital, LPHedge fund | 0.8% | $53.6M | 4,000,000 | — | Q2 2026 |
| Casdin Capital, LLCHedge fund | 1.7% | $34.2M | 2,550,000 | +59.4% shares | Q2 2026 |
| Kennedy Capital Management LLCInstitutional asset manager | 0.6% | $31.7M | 2,364,282 | — | Q2 2026 |
| AIGH Capital Management LLCHedge fund | 2.1% | $23.0M | 1,715,000 | -40.9% shares | Q2 2026 |
| Blue Water Life Science Advisors, LPHedge fund | 14.1% | $22.5M | 1,676,300 | +0.0% shares | Q2 2026 |
| Wellington Shields Capital Management, LLCWealth manager | 0.6% | $4.6M | 339,733 | — | Q2 2026 |
| Wellington Shields & Co., LLCWealth manager | 0.9% | $3.9M | 292,489 | — | Q2 2026 |
| Militia Capital Management LLCHedge fund | 0.7% | $3.9M | 291,881 | — | Q2 2026 |
| Stempoint Capital LPHedge fund | 0.6% | $3.3M | 247,783 | — | Q2 2026 |
| Perkins Capital Management IncWealth manager | 2.4% | $3.2M | 239,000 | +0.0% shares | Q2 2026 |
| Bruce & Co., Inc.Mutual fund manager | 0.8% | $3.1M | 233,000 | +0.0% shares | Q2 2026 |
| Nano Cap New Millennium Growth Fund L PAsset manager | 1.6% | $2.1M | 157,500 | -33.0% shares | Q2 2026 |
| AlphaCentric Advisors LLCMutual fund manager | 0.9% | $1.1M | 78,924 | — | Q2 2026 |
| Green Alpha Advisors, LLCWealth manager | 0.6% | $873K | 53,645 | -20.5% shares | Q3 2026 |
| AlpInvest Partners B.V.Hedge fund | 0.8% | $505K | 37,703 | New | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 17). Screen PSNL in the grand portfolio →
PSNL stock trades by members of Congress
Members of Congress have disclosed 3 PSNL trades since 2020, 1 purchase and 2 sales in the past year; the latest was Brian J. Mast (R-FL), selling $15K–50K on May 19, 2020.
| Filed | Member | Trade | Amount | Traded | Since |
|---|---|---|---|---|---|
| Jun 4, 2020 | Brian J. MastR-FL · House | Sale | $15K–50K | May 19, 2020 | +38.1% |
| May 4, 2020 | Brian J. MastR-FL · House | Sale | $1K–15K | Apr 22, 2020 | +69.0% |
| Mar 4, 2020 | Brian J. MastR-FL · House | Buy | $15K–50K | Feb 14, 2020 | +53.1% |
PSNL questions and answers
Are insiders buying PSNL stock?
Between Aug 1, 2026 and Oct 29, 2026, 4 PSNL insiders filed 4 sales worth $267K on SEC Form 4, and no open-market purchases.
Which hedge funds own PSNL?
18 13F filers hold PSNL among their 50 largest positions, worth $572.3M combined, including Cathie Wood. The biggest bets by portfolio weight are Merck & Co., Inc. (35.8%), Perkins Capital Management Inc (2.4%) and AIGH Capital Management LLC (2.1%). In their latest 13Fs, 1 manager opened a new position and 1 added to one.
Has Congress traded PSNL?
Members of Congress have disclosed 3 PSNL trades since 2020, 1 purchase and 2 sales in the past year; the latest was Brian J. Mast (R-FL), selling $15K–50K on May 19, 2020.
Who is the largest holder of PSNL?
Among 13F filers, Merck & Co., Inc. reports the largest PSNL position, $188.2M (14,044,943 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Merck & Co., Inc.'s: 35.8% of its portfolio.
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