FREMONT, CA
PERSONALIS, INC.PSNL— Latest position per institution from SEC 13F filings
15
Institutional holders
78.55M
Total shares held
441.19M
Estimated value
3.93M
Avg. position size
MERCK & CO., INC.
CIK 310158
Shares
14.04M
Value
89.47M
Filed
Mar 31, 2026
LIGHTSPEED MANAGEMENT COMPANY, L.L.C.
CIK 1702122
Shares
8.16M
Value
51.98M
Filed
Mar 31, 2026
ARK INVESTMENT MANAGEMENT LLC
CIK 1697748
Shares
7.94M
Value
50.60M
Filed
Mar 31, 2026
AMERIPRISE FINANCIAL INC
CIK 820027
Shares
7.59M
Value
48.37M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
5.39M
Value
34.33M
Filed
Mar 31, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
CIK 1897612
Shares
4.76M
Value
30.31K
Filed
Mar 31, 2026
ABERDEEN GROUP PLC
CIK 1716774
Shares
3.49M
Value
22.22M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
3.29M
Value
3.85M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
3.25M
Value
25.90M
Filed
Dec 31, 2025
DEEP TRACK CAPITAL, LP
CIK 1856083
Shares
3M
Value
19.11M
Filed
Mar 31, 2026
AIGH CAPITAL MANAGEMENT LLC
CIK 1835943
Shares
2.90M
Value
18.47M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.87M
Value
18.27M
Filed
Mar 31, 2026
KENNEDY CAPITAL MANAGEMENT LLC
CIK 884589
Shares
2.18M
Value
13.91M
Filed
Mar 31, 2026
BLUE WATER LIFE SCIENCE ADVISORS, LP
CIK 1789778
Shares
1.68M
Value
10.68M
Filed
Mar 31, 2026
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
1.65M
Value
10.51K
Filed
Mar 31, 2026
CASDIN CAPITAL, LLC
CIK 1534261
Shares
1.60M
Value
10.19M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.30M
Value
8.27M
Filed
Mar 31, 2026
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
1.25M
Value
1.51M
Filed
Sep 30, 2023
STATE STREET CORP
CIK 93751
Shares
1.13M
Value
7.22M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.07M
Value
6.79M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | MERCK & CO., INC. | 310158 | 14.04M | 89.47M | Mar 31, 2026 |
| 2 | LIGHTSPEED MANAGEMENT COMPANY, L.L.C. | 1702122 | 8.16M | 51.98M | Mar 31, 2026 |
| 3 | ARK INVESTMENT MANAGEMENT LLC | 1697748 | 7.94M | 50.60M | Mar 31, 2026 |
| 4 | AMERIPRISE FINANCIAL INC | 820027 | 7.59M | 48.37M | Mar 31, 2026 |
| 5 | BLACKROCK, INC. | 2012383 | 5.39M | 34.33M | Mar 31, 2026 |
| 6 | T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 1897612 | 4.76M | 30.31K | Mar 31, 2026 |
| 7 | ABERDEEN GROUP PLC | 1716774 | 3.49M | 22.22M | Mar 31, 2026 |
| 8 | BLACKROCK FINANCE, INC. | 1364742 | 3.29M | 3.85M | Jun 30, 2024 |
| 9 | VANGUARD GROUP INC | 102909 | 3.25M | 25.90M | Dec 31, 2025 |
| 10 | DEEP TRACK CAPITAL, LP | 1856083 | 3M | 19.11M | Mar 31, 2026 |
| 11 | AIGH CAPITAL MANAGEMENT LLC | 1835943 | 2.90M | 18.47M | Mar 31, 2026 |
| 12 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.87M | 18.27M | Mar 31, 2026 |
| 13 | KENNEDY CAPITAL MANAGEMENT LLC | 884589 | 2.18M | 13.91M | Mar 31, 2026 |
| 14 | BLUE WATER LIFE SCIENCE ADVISORS, LP | 1789778 | 1.68M | 10.68M | Mar 31, 2026 |
| 15 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 1.65M | 10.51K | Mar 31, 2026 |
| 16 | CASDIN CAPITAL, LLC | 1534261 | 1.60M | 10.19M | Mar 31, 2026 |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.30M | 8.27M | Mar 31, 2026 |
| 18 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 1.25M | 1.51M | Sep 30, 2023 |
| 19 | STATE STREET CORP | 93751 | 1.13M | 7.22M | Mar 31, 2026 |
| 20 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.07M | 6.79M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.