Personalis, Inc. (PSNL) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

88,699,131Shares Outstanding

80,172,501Shares held by institutions

$500,276,406Value of institutional holdings

90.39%Institutional ownership %

30.10%Shares Changed QoQ

122No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Personalis, Inc. (NASDAQ:PSNL) showed up in the 13F filings of 122 institutional investors as of December 2025.

These investors held 90.0% of outstanding shares in December 2025, up from 73.2% in September 2025.
They increased total shares held in PSNL by 29.91% quarter over quarter, and investors in Personalis increased 15.09% from a year ago.
Of these 122 holders, 65 added to their stakes in Personalis, 40 trimmed positions, and 17 made no changes.
Altogether, these fund groups held 79.82Mn shares in PSNL by December 2025, up by 18.38Mn shares quarter on quarter, and up 19.77Mn shares year over year.
Merck & Co., Inc. leads ownership in PSNL with 14.04Mn shares as of December 31, 2025, equal to 15.83% of outstanding shares.
The most significant purchases of PSNL for the quarter ending December 2025 came from T. Rowe Price Investment Management, Inc. (9.83Mn), Ameriprise Financial Inc (5.99Mn), Aberdeen Group plc (861.95K), PFM Health Sciences, LP (805.82K), NEXT CENTURY GROWTH INVESTORS LLC (624.36K).
The largest sales of PSNL for the quarter ending December 2025 came from AIGH Capital Management LLC (992.1K), RENAISSANCE TECHNOLOGIES LLC (360.05K), BlackRock, Inc. (325.29K), KENNEDY CAPITAL MANAGEMENT LLC (222.43K), Barclays Plc (175.12K).
Personalis's 10 largest shareholders as of December 2025 include Merck & Co., Inc. (14.04Mn), T. Rowe Price Investment Management, Inc. (12.72Mn), Lightspeed Management Company, L.L.C. (8.16Mn), ARK Investment Management LLC (7.88Mn), Ameriprise Financial Inc (6.29Mn), BlackRock, Inc. (5.32Mn), VANGUARD GROUP INC (3.25Mn), Aberdeen Group plc (3.25Mn), AIGH Capital Management LLC (2.9Mn), KENNEDY CAPITAL MANAGEMENT LLC (1.71Mn) per Business Quant data.

122 Institutional Holders

80,172,501 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Merck & Co., Inc.	31 Dec, 2025	14,044,943	0	0.00%	$111,797,746.00
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	12,718,327	9,834,751	341.06%	$101,239.00
Lightspeed Management Company, L.L.C.	31 Dec, 2025	8,160,734	0	0.00%	$64,959,443.00
ARK Investment Management LLC	31 Dec, 2025	7,879,087	-31,104	-0.39%	$62,717,533.00
Ameriprise Financial Inc	31 Dec, 2025	6,287,151	5,988,126	2,002.55%	$50,045,728.00
BlackRock, Inc.	31 Dec, 2025	5,319,508	-325,291	-5.76%	$42,343,284.00
VANGUARD GROUP INC	31 Dec, 2025	3,253,797	247,387	8.23%	$25,900,225.00
Aberdeen Group plc	31 Dec, 2025	3,249,895	861,948	36.10%	$25,869,164.00
AIGH Capital Management LLC	31 Dec, 2025	2,900,000	-992,101	-25.49%	$23,084,000.00
KENNEDY CAPITAL MANAGEMENT LLC	31 Dec, 2025	1,712,652	-222,426	-11.49%	$13,632,710.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,297,807	-35,734	-2.68%	$10,333,039.00
State Street Corp	31 Dec, 2025	1,050,590	124,243	13.41%	$8,362,696.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	983,174	9,519	0.98%	$7,826,162.00
PFM Health Sciences, LP	31 Dec, 2025	805,817	805,817	0.00%	$6,414,303.00
Goldman Sachs Group Inc	31 Dec, 2025	684,950	110,969	19.33%	$5,452,202.00
NEXT CENTURY GROWTH INVESTORS LLC	31 Dec, 2025	624,363	624,363	0.00%	$4,969,929.00
HOWLAND CAPITAL MANAGEMENT LLC	31 Dec, 2025	547,115	216,442	65.45%	$4,355,036.00
Sumitomo Mitsui Trust Group, Inc.	31 Dec, 2025	518,441	-72,555	-12.28%	$4,126,790.00
Amova Asset Management Americas, Inc.	31 Dec, 2025	518,441	-72,555	-12.28%	$4,126,790.00
STATE OF MICHIGAN RETIREMENT SYSTEM	31 Dec, 2025	493,798	0	0.00%	$3,930,632.00

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