Latest Period
Q1 2026
Security Snapshot
Personalis, Inc. - Common Stock, $0.0001 par value per share (PSNL) Institutional Ownership
CUSIP: 71535D106
13F Institutional Holders and Ownership History from Q2 2019 to Q1 2026
Institutions Reporting
139
Shares (Excl. Options)
84,584,455
Price
$6.37
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- Security type / class
- Equity / Common Stock, $0.0001 par value per share
- Symbol
- PSNL on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 84,584,455
- Total 13F value
- $538,766,734
- Portfolio coverage rank
- 0%
- Share change
- +3,324,109
- Value change
- +$18,994,834
- Number of holders
- 139
- Shares outstanding
- 104,548,584
- SEC-reported price per share
- $5.78
- Insider filing price
- $5.78
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- PSNL - Personalis, Inc. - Common Stock, $0.0001 par value per share is tracked under CUSIP 71535D106.
- 139 institutions reported positions in Q1 2026.
- 10 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 125 to 139 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $644,778,177 to $538,766,734.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 139 institutions filings for Q1 2026.
Security key
71535D106
Latest holder period
Q1 2026
13F holders
139
13D/G owners
10
CIK / CUSIP context first
Open Q1 2026 holders
PSNL full holder history
Personalis, Inc. SEC filings
Personalis, Inc. company facts
Personalis, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 71535D106:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
10
Security
PSNL
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Merck & Co., Inc. | 16% | $53,792,132 | 14,044,943 | Merck & Co., Inc. | 19 Dec 2024 | |||
| Tempus AI, Inc. | 14% | $58,553,040 | 12,868,800 | Eric Lefkofsky | 11 Sep 2025 | |||
| KEYWELL BRADLEY A | 7.6% | $49,211,559 | 12,848,971 | Bradley A. Keywell | 17 Jan 2025 | |||
| Red Sky Ventures LLC | 4.7% | -17% | $52,546,773 | -$9,366,221 | 8,059,321 | -15% | Red Sky Ventures LLC | 30 Sep 2025 |
| ARK Investment Management LLC | 8.1% | -14% | $27,530,795 | +$1,580,878 | 7,188,197 | +6.1% | ARK Investment Management LLC | 31 Mar 2025 |
| AMERIPRISE FINANCIAL INC | 7.1% | $53,880,884 | 6,287,151 | Ameriprise Financial, Inc. | 31 Dec 2025 | |||
| Deep Track Capital, LP | 5.5% | $36,349,556 | 5,760,627 | Deep Track Capital, LP | 05 May 2026 | |||
| T. Rowe Price Investment Management, Inc. | 4.5% | -63% | $30,312,846 | -$38,366,225 | 4,758,091 | -56% | T. Rowe Price Investment Management, Inc. | 31 Mar 2026 |
| HIRSCHMAN ORIN | 3.8% | -38% | $27,205,633 | -$6,982,468 | 3,416,720 | -20% | Orin Hirschman | 31 Dec 2025 |
| BlackRock, Inc. | 3.5% | $11,318,301 | 2,955,170 | BlackRock, Inc. | 31 Dec 2024 |
As of 31 Mar 2026, 139 institutional investors reported holding 84,584,455 shares of Personalis, Inc. - Common Stock, $0.0001 par value per share (PSNL). This represents 81% of the company’s total 104,548,584 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
72%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Merck & Co., Inc. | 13% | 14,044,943 | 0% | 26% | $89,466,287 |
| LIGHTSPEED MANAGEMENT COMPANY, L.L.C. | 7.8% | 8,160,734 | 0% | 5.3% | $51,983,876 |
| ARK Investment Management LLC | 7.6% | 7,944,112 | +0.83% | 0.39% | $50,603,993 |
| AMERIPRISE FINANCIAL INC | 7.3% | 7,592,807 | +21% | 0.01% | $48,366,193 |
| BlackRock, Inc. | 5.2% | 5,389,885 | +1.3% | 0% | $34,333,567 |
| T. Rowe Price Investment Management, Inc. | 4.6% | 4,758,091 | -56% | 0.02% | $30,310,000 |
| Aberdeen Group plc | 3.3% | 3,488,308 | +7.3% | 0.04% | $22,220,522 |
| Deep Track Capital, LP | 2.9% | 3,000,000 | 0.39% | $19,110,000 | |
| AIGH Capital Management LLC | 2.8% | 2,900,000 | 0% | 3.8% | $18,473,000 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.7% | 2,868,463 | 0% | 0% | $18,272,109 |
| KENNEDY CAPITAL MANAGEMENT LLC | 2.1% | 2,183,572 | +27% | 0.29% | $13,909,354 |
| Blue Water Life Science Advisors, LP | 1.6% | 1,676,300 | 0% | 8.6% | $10,678,031 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.6% | 1,650,141 | +14% | 0% | $10,513,000 |
| Casdin Capital, LLC | 1.5% | 1,600,000 | 0.77% | $10,192,000 | |
| GEODE CAPITAL MANAGEMENT, LLC | 1.2% | 1,297,655 | -0.01% | 0% | $8,268,159 |
| STATE STREET CORP | 1.1% | 1,134,170 | +8% | 0% | $7,224,663 |
| DIMENSIONAL FUND ADVISORS LP | 1% | 1,066,248 | +8.4% | 0% | $6,790,741 |
| PFM Health Sciences, LP | 0.83% | 870,097 | +8% | 0.58% | $5,542,518 |
| GOLDMAN SACHS GROUP INC | 0.71% | 737,132 | +115% | 0% | $4,695,531 |
| Portolan Capital Management, LLC | 0.7% | 736,713 | +94% | 0.25% | $4,692,862 |
| JPMORGAN CHASE & CO | 0.55% | 575,490 | +2054% | 0% | $3,591,057 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.54% | 560,539 | 0% | 0% | $3,570,633 |
| HOWLAND CAPITAL MANAGEMENT LLC | 0.52% | 547,115 | 0% | 0.14% | $3,485,123 |
| STATE OF MICHIGAN RETIREMENT SYSTEM | 0.47% | 493,798 | 0% | 0.02% | $3,145,493 |
| Sumitomo Mitsui Trust Group, Inc. | 0.46% | 484,270 | -6.6% | 0% | $3,084,800 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
28
Latest
Q1 2026
Rows shown
1-25 of 28
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 84,584,455 | $538,766,734 | +$18,994,834 | $6.37 | 139 |
| 2025 Q4 | 81,001,611 | $644,778,177 | +$129,305,525 | $7.96 | 125 |
| 2025 Q3 | 64,702,482 | $421,838,154 | +$27,589,778 | $6.52 | 107 |
| 2025 Q2 | 60,456,657 | $396,611,525 | +$44,202,043 | $6.56 | 105 |
| 2025 Q1 | 54,828,320 | $192,441,316 | +$10,090,223 | $3.51 | 102 |
| 2024 Q4 | 51,601,342 | $298,243,551 | -$3,572,926 | $5.78 | 107 |
| 2024 Q3 | 29,319,270 | $161,516,207 | +$43,033,654 | $5.38 | 83 |
| 2024 Q2 | 21,956,574 | $25,689,907 | -$438,121 | $1.17 | 69 |
| 2024 Q1 | 22,271,019 | $33,182,519 | +$217,168 | $1.49 | 70 |
| 2023 Q4 | 21,963,535 | $46,098,090 | -$4,605,029 | $2.10 | 68 |
| 2023 Q3 | 24,787,157 | $29,989,246 | -$2,223,907 | $1.21 | 63 |
| 2023 Q2 | 26,077,892 | $48,999,684 | -$2,366,338 | $1.88 | 64 |
| 2023 Q1 | 27,192,343 | $74,996,760 | +$205,499 | $2.76 | 62 |
| 2022 Q4 | 27,801,895 | $55,045,447 | -$1,904,858 | $1.98 | 78 |
| 2022 Q3 | 28,367,717 | $83,900,229 | -$5,226,601 | $2.97 | 77 |
| 2022 Q2 | 29,874,257 | $105,564,934 | -$15,549,124 | $3.45 | 95 |
| 2022 Q1 | 32,474,275 | $265,328,914 | -$398,164 | $8.19 | 120 |
| 2021 Q4 | 32,151,998 | $456,199,133 | +$2,045,734 | $14.27 | 105 |
| 2021 Q3 | 31,406,739 | $604,224,567 | -$14,422,392 | $19.24 | 116 |
| 2021 Q2 | 31,940,492 | $807,886,761 | +$23,454,157 | $25.30 | 132 |
| 2021 Q1 | 30,722,882 | $755,704,555 | +$60,986,103 | $24.61 | 130 |
| 2020 Q4 | 26,591,341 | $973,697,818 | +$110,231,063 | $36.61 | 128 |
| 2020 Q3 | 25,391,300 | $552,000,648 | +$128,507,444 | $21.67 | 90 |
| 2020 Q2 | 18,853,701 | $244,721,982 | +$7,255,056 | $12.97 | 77 |
| 2020 Q1 | 19,072,243 | $153,524,384 | +$10,223,267 | $8.07 | 65 |