Personalis PSNL Institutional Ownership

NASDAQ PSNL

$16.78 -0.30 (-1.76%)

As of: Aug 27, 2026 · 3:59 PM EDT

Institutions by Trading Activity

159 Institutions

Increased 113 71.1%

Unchanged 12 7.5%

Reduced 34 21.4%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

80.79%

▼-0.42 pp QoQ

Shares Held by Institutions

85.17Mn

of 105.42Mn outstanding

▲+10.44% QoQ

Shares Outstanding

105.42Mn

20.25Mn held outside 13F filers

Institutional Investors

159

filed 13F for Jun 2026

▲+20 vs prior quarter

Net Shares Added (QoQ)

+8.05Mn

accumulated since last quarter

Value of Holdings

$1.45Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Personalis, Inc. (NASDAQ:PSNL) is held by 139 institutional investors per 13F filings through March 2026.

Their combined ownership stood at 81.2% of outstanding shares in March 2026, down from 89.8% in December 2025.
Their total shares held in PSNL increased 12.46% quarter over quarter, and separately, investors owning Personalis increased 32.38% from a year ago.
Of these 139 holders, 85 added to their stakes in Personalis, 36 trimmed positions, and 18 made no changes.
Institutional investors collectively held 84.62Mn shares in Personalis as of March 2026, up by 9.37Mn shares quarter on quarter, and up 28.57Mn shares year over year.
As of March 31, 2026, the biggest holder of Personalis is Merck & Co., Inc. at 14.04Mn shares, representing 13.48% of shares outstanding.
Leading buyers of Personalis shares for the quarter ending March 2026 were Deep Track Capital, LP (3.0Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.87Mn), Blue Water Life Science Advisors, LP (1.68Mn), PRICE T ROWE ASSOCIATES INC /MD/ (1.65Mn), Casdin Capital, LLC (1.6Mn).
The largest sellers of Personalis for the quarter ending March 2026 were T. Rowe Price Investment Management, Inc. (7.96Mn), TD ASSET MANAGEMENT INC (166.2K), FIRST MANHATTAN CO. LLC. (143.22K), RENAISSANCE TECHNOLOGIES LLC (77.79K), Barclays Plc (68.37K).
Per Business Quant data, the top 10 holders of Personalis for the quarter ending March 2026 are Merck & Co., Inc. (14.04Mn), Lightspeed Management Company, L.L.C. (8.16Mn), ARK Investment Management LLC (7.94Mn), Ameriprise Financial Inc (7.59Mn), BlackRock, Inc. (5.39Mn), T. Rowe Price Investment Management, Inc. (4.76Mn), Aberdeen Group plc (3.49Mn), Deep Track Capital, LP (3.0Mn), AIGH Capital Management LLC (2.9Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.87Mn).

Form 13F Holdings

159 Institutional Holders

Report period 30 Jun, 2026

Total shares held 85.17Mn

Of outstanding 80.79%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	Merck & Co., Inc.	0000310158	14,044,943	13.32%	0	0.00%	$188.20Mn
2	ARK Investment Management LLC	0001697748	8,271,339	7.85%	▲327,227	+4.12%	$110.84Mn
3	BlackRock, Inc.	0002012383	7,082,491	6.72%	▲1,692,606	+31.40%	$94.91Mn
4	Lightspeed Management Company, L.L.C.	0001702122	6,101,850	5.79%	▼2,058,884	-25.23%	$81.76Mn
5	Ameriprise Financial Inc	0000820027	6,086,315	5.77%	▼1,506,492	-19.84%	$81.56Mn
6	Deep Track Capital, LP	0001856083	4,000,000	3.79%	▲1,000,000	+33.33%	$53.60Mn
7	Aberdeen Group plc	0001716774	3,747,290	3.55%	▲258,982	+7.42%	$50.21Mn
8	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,010,150	2.86%	▲141,687	+4.94%	$40.34Mn
9	Casdin Capital, LLC	0001534261	2,550,000	2.42%	▲950,000	+59.38%	$34.17Mn
10	KENNEDY CAPITAL MANAGEMENT LLC	0000884589	2,364,282	2.24%	▲180,710	+8.28%	$31.68Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,822,445	1.73%	▲524,790	+40.44%	$24.43Mn
12	Bank Of America Corp /De/	0000070858	1,820,541	1.73%	▲1,709,235	+1,535.62%	$24.40Mn
13	AIGH Capital Management LLC	0001835943	1,715,000	1.63%	▼1,185,000	-40.86%	$22.98Mn
14	Blue Water Life Science Advisors, LP	0001789778	1,676,300	1.59%	0	0.00%	$22.46Mn
15	DIMENSIONAL FUND ADVISORS LP	0000354204	1,496,983	1.42%	▲430,735	+40.40%	$20.06Mn
16	State Street Corp	0000093751	1,487,077	1.41%	▲352,907	+31.12%	$19.93Mn
17	Morgan Stanley	0000895421	1,270,946	1.21%	▲1,033,631	+435.55%	$17.03Mn
18	Goldman Sachs Group Inc	0000886982	931,031	0.88%	▲193,899	+26.30%	$12.48Mn
19	HRT FINANCIAL LP	0001475597	930,816	0.88%	▲721,925	+345.60%	$12.47K
20	Nuveen, LLC	0001871926	753,004	0.71%	▲409,484	+119.20%	$10.09Mn

Showing 1 to 20 of 159 holders