Personalis Ownership | Who Owns Personalis?

Overview Forecast RevenueFinancials Chart Transcripts

Personalis Ownership Summary

Personalis is owned by 72.91% institutional investors, 31.28% insiders. Merck is the largest institutional shareholder, holding 15.87% of PSNL shares. ARK Genomic Revolution ETF is the top mutual fund, with 9.10% of its assets in Personalis shares.

PSNL Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Personalis	72.91%	31.28%	-4.19%
Sector	Healthcare Stocks	42.54%	10.83%	46.63%
Industry	Diagnostics & Research Stocks	46.31%	10.49%	43.20%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Merck	14.04M	15.87%	$91.57M
Lightspeed management	8.16M	9.22%	$53.21M
Ark investment management	7.91M	8.94%	$51.57B
Blackrock	3.29M	6.50%	$3.85M
Blackrock funding, inc. /de	5.64M	6.38%	$36.80M
Aigh capital management	3.89M	4.40%	$25.38M
Vanguard group	3.01M	3.40%	$19.60M
T. rowe price investment management	2.88M	3.26%	$18.80M
Abrdn	2.39M	2.70%	$15.57M
Kennedy capital management	1.94M	2.19%	$12.62M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Merck	14.04M	40.16%	$91.57M
Lightspeed management	8.16M	16.53%	$53.21M
Blue water life science advisors, lp	1.68M	9.97%	$10.93M
Aigh capital management	3.89M	7.15%	$25.38M
Perkins capital management	252.50K	1.45%	$1.65M
Bruce	253.00K	0.51%	$1.65M
Wellington shields	292.49K	0.50%	$1.91M
Ark investment management	7.91M	0.31%	$51.57B
Wellington shields capital management	292.13K	0.29%	$1.90M
Kennedy capital management	1.94M	0.28%	$12.62M

Top Buyers

Holder	Shares	% Assets	Change
T. rowe price investment management	2.88M	0.01%	1.62M
Kennedy capital management	1.94M	0.28%	1.28M
Ark investment management	7.91M	0.31%	802.27K
Susquehanna group, llp	873.10K	0.00%	718.34K
Abrdn	2.39M	0.02%	628.45K

Top Sellers

Holder	Shares	% Assets	Change
Millennium management	1.32M	0.00%	-1.12M
Marshall wace, llp	-	-	-696.29K
Exoduspoint capital management, lp	-	-	-437.37K
Nuveen	308.68K	0.00%	-326.89K
Morgan stanley	342.06K	0.00%	-284.40K

New Positions

Holder	Shares	% Assets	Change	Value
Jbf capital	166.10K	0.16%	166.10K	$1.08M
Skopos labs	110.88K	0.08%	110.88K	$722.96K
Td asset management	54.58K	0.00%	54.58K	$355.89M
Janney montgomery scott	25.00K	0.00%	25.00K	$163.00K
Atom investors lp	18.04K	0.01%	18.04K	$117.64K

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-100.00
Redwood wealth management group	-100.00
Org partners	-100.00
Signaturefd	-158.00
Comerica bank	-283.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	109	0.93%	64,542,322	6.76%	72	1.56%	52	-26.76%	32	33.33%
Jun 30, 2025	107	0.94%	60,437,524	85.26%	68	4.91%	69	13.11%	25	-10.71%
Mar 31, 2025	108	-0.92%	54,828,815	6.28%	62	0.88%	62	12.73%	28	-20.00%
Dec 31, 2024	59	-32.18%	23,614,794	-19.46%	38	1.68%	25	-37.50%	22	-24.14%
Sep 30, 2024	87	24.29%	29,319,370	33.53%	48	2.56%	40	110.53%	29	-

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
ARK Genomic Revolution ETF	8.07M	9.10%	-28.79K
ARK Genomic Revolution	6.95M	7.84%	-118.85K
Vanguard Total Stock Mkt Idx Inv	1.74M	1.97%	-38.65K
Nikko Gbl All Biological Genome Eq MF	932.69K	1.41%	-150.91K
iShares Russell 2000 ETF	1.24M	1.40%	-
Vanguard US Total Market Shares ETF	1.21M	1.37%	-
abrdn Healthcare Investors	1.18M	1.33%	203.94K
abrdn Life Sciences Investors	1.01M	1.14%	94.84K
T. Rowe Price Small-Cap Value	764.05K	0.86%	-1.75K
T. Rowe Price Small-Cap Stock	729.61K	0.82%	729.61K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 25, 2025	Tachibana Aaron	CFO AND COO	Sell	$1.12M
Nov 03, 2025	Hall Christopher M	PRESIDENT AND CEO	Sell	$266.21K
Jul 28, 2025	Chen Richard	CHIEF MEDICAL OFFICER AND EVP	Sell	$2.97K
Jul 28, 2025	Tachibana Aaron	CFO AND COO	Sell	$4.21K
May 16, 2025	Tachibana Aaron	CFO AND COO	Sell	$6.39K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	1
2025 Q3	-	2
2025 Q2	-	3
2025 Q1	-	2
2024 Q4	-	7

PSNL Ownership FAQ

Who Owns Personalis?

Personalis shareholders are primarily institutional investors at 72.91%, followed by 31.28% insiders and -4.19% retail investors. The average institutional ownership in Personalis's industry, Diagnostics & Research Stocks, is 46.31%, which Personalis exceeds.

Who owns the most shares of Personalis?

Personalis’s largest shareholders are Merck (14.04M shares, 15.87%), Lightspeed management (8.16M shares, 9.22%), and Ark investment management (7.91M shares, 8.94%). Together, they hold 34.02% of Personalis’s total shares outstanding.

Does Blackrock own Personalis?

Yes, BlackRock owns 6.50% of Personalis, totaling 3.29M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 3.85M$. In the last quarter, BlackRock increased its holdings by 11.39K shares, a 0.35% change.

Who is Personalis’s biggest shareholder by percentage of total assets invested?

Merck is Personalis’s biggest shareholder by percentage of total assets invested, with 40.16% of its assets in 14.04M Personalis shares, valued at 91.57M$.

Who is the top mutual fund holder of Personalis shares?

ARK Genomic Revolution ETF is the top mutual fund holder of Personalis shares, with 9.10% of its total shares outstanding invested in 8.07M Personalis shares.

Try Tickergate Pro Free

Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)

Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis

Discover trending investment themes
Find your next best investment
Research stocks using tools