Personalis Ownership | Who Owns Personalis?

Overview Forecast RevenueFinancials Chart Transcripts

Personalis Ownership Summary

Personalis is owned by 81.68% institutional investors, 26.15% insiders. Merck is the largest institutional shareholder, holding 15.22% of PSNL shares. ARK Genomic Revolution is the top mutual fund, with 7.36% of its assets in Personalis shares.

PSNL Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Personalis	81.68%	26.15%	-7.83%
Sector	Healthcare Stocks	244.37%	12.11%	-156.48%
Industry	Diagnostics & Research Stocks	84.28%	9.84%	5.87%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Merck	14.04M	15.22%	$89.47M
Lightspeed management	8.16M	8.84%	$51.98M
Ark investment management	7.94M	8.61%	$50.60M
Ameriprise financial	7.59M	8.23%	$48.37M
Blackrock	3.29M	6.50%	$3.85M
Blackrock funding, inc. /de	5.39M	5.84%	$34.33M
Abrdn	3.49M	3.78%	$22.22M
Vanguard group	3.25M	3.67%	$25.90M
Deep track capital, lp	3.00M	3.25%	$19.11M
Aigh capital management	2.90M	3.14%	$18.47M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Merck	14.04M	25.60%	$89.47M
Blue water life science advisors, lp	1.68M	8.56%	$10.68M
Lightspeed management	8.16M	5.26%	$51.98M
Aigh capital management	2.90M	2.52%	$18.47M
Perkins capital management	239.00K	1.43%	$1.52M
Nano cap new millennium growth fund l p	235.00K	1.40%	$1.50M
Casdin capital	1.60M	0.77%	$10.19M
Wellington shields	292.49K	0.47%	$1.86M
Bruce	233.00K	0.42%	$1.48M
Green alpha advisors	66.41K	0.42%	$423.02K

Top Buyers

Holder	Shares	% Assets	Change
Deep track capital, lp	3.00M	0.31%	3.00M
Casdin capital	1.60M	0.77%	1.60M
Ameriprise financial	7.59M	0.01%	1.31M
Jpmorgan chase	575.49K	0.00%	548.77K
Kennedy capital management	2.18M	0.29%	470.92K

Top Sellers

Holder	Shares	% Assets	Change
T. rowe price investment management	-	-	-4.76M
Pfm health sciences, lp	-	-	-870.10K
Portolan capital management	-	-	-736.71K
Marshall wace, llp	-	-	-696.29K
Next century growth investors	-	-	-624.36K

New Positions

Holder	Shares	% Assets	Change	Value
Deep track capital, lp	3.00M	0.31%	3.00M	$19.11M
Casdin capital	1.60M	0.77%	1.60M	$10.19M
Vanguard fiduciary trust	339.51K	0.00%	339.51K	$2.16M
Tudor investment corp et al	209.83K	0.00%	209.83K	$1.34M
Swiss national bank	105.40K	0.00%	105.40K	$671.40K

Sold Out

Holder	Change
Srs capital advisors	-9.00
Mai capital management	-31.00
Western wealth management	-35.00
Rockefeller capital management	-36.00
Signaturefd	-57.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	169	14.97%	86,109,195	1.77%	81	1.24%	112	33.33%	35	-7.89%
Mar 31, 2026	61	-53.44%	16,545,494	-79.57%	17	0.21%	31	-52.31%	18	-55.00%
Dec 31, 2025	91	-19.47%	35,625,946	-45.03%	40	0.75%	49	-9.26%	28	-17.65%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
ARK Genomic Revolution	7.86M	7.36%	300.51K
ARK Genomic Revolution ETF	6.73M	6.31%	-141.85K
abrdn Healthcare Investors	2.48M	2.32%	272.00K
Vanguard Total Stock Mkt Idx Inv	2.14M	2.05%	-47.30K
Vanguard Morn Total Stk Mkt Idx Investor	2.14M	2.01%	-47.30K
Vanguard MStar Total Stk Mkt Idx Invest	2.14M	2.01%	-
CT (Lux) American Smaller Com 9U USD	1.76M	1.64%	-1.06M
iShares Russell 2000 ETF	1.74M	1.63%	-30.91K
abrdn Life Sciences Investors	1.70M	1.59%	158.24K
Nikko Gbl All Biological Genome Eq MF	932.69K	1.41%	-150.91K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jul 15, 2026	Chen Richard	President and CMO	Sell	$1.51M
Jul 09, 2026	Hall Christopher M	Chief Executive Officer	Sell	$1.51M
Jun 29, 2026	Tachibana Aaron	CFO AND COO	Sell	$69.75K
Jun 26, 2026	Tachibana Aaron	CFO AND COO	Sell	$675.49K
Jun 26, 2026	Hall Christopher M	Chief Executive Officer	Sell	$1.31M

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	2
2026 Q2	-	6
2026 Q1	-	1
2025 Q4	-	2
2025 Q3	-	2

PSNL Ownership FAQ

Who Owns Personalis?

Personalis shareholders are primarily institutional investors at 81.68%, followed by 26.15% insiders and -7.83% retail investors. The average institutional ownership in Personalis's industry, Diagnostics & Research Stocks, is 84.28%, which Personalis falls below.

Who owns the most shares of Personalis?

Personalis’s largest shareholders are Merck (14.04M shares, 15.22%), Lightspeed management (8.16M shares, 8.84%), and Ark investment management (7.94M shares, 8.61%). Together, they hold 32.67% 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 25.60% of its assets in 14.04M Personalis shares, valued at 89.47M$.

Who is the top mutual fund holder of Personalis shares?

ARK Genomic Revolution is the top mutual fund holder of Personalis shares, with 7.36% of its total shares outstanding invested in 7.86M 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