Sera Prognostics Ownership | Who Owns Sera Prognostics?

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Sera Prognostics Ownership Summary

Sera Prognostics is owned by 8.95% institutional investors, 10.89% insiders, and 80.16% retail investors. Baker bros. advisors lp is the largest institutional shareholder, holding 11.21% of SERA shares. abrdn Healthcare Investors is the top mutual fund, with 3.01% of its assets in Sera Prognostics shares.

SERA Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Sera Prognostics	8.95%	10.89%	80.16%
Sector	Healthcare Stocks	42.50%	10.81%	46.69%
Industry	Diagnostics & Research Stocks	45.39%	10.59%	44.03%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Baker bros. advisors lp	5.50M	11.21%	$16.82M
Whetstone capital advisors	3.63M	7.40%	$11.12M
Abrdn	2.28M	4.65%	$6.98M
Blackrock	1.41M	4.38%	$8.35M
Vivo capital	1.65M	3.36%	$5.05M
Vanguard group	1.22M	2.48%	$3.72M
Captrust financial advisors	602.28K	1.23%	$1.67M
Geode capital management	331.12K	0.67%	$1.01M
Sanders morris harris	263.60K	0.54%	$806.62K
Awm investment company	207.38K	0.42%	$634.59K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Whetstone capital advisors	3.63M	3.08%	$11.12M
Vivo capital	1.65M	0.41%	$5.05M
Baker bros. advisors lp	5.50M	0.12%	$16.82M
Sanders morris harris	263.60K	0.11%	$806.62K
Awm investment company	207.38K	0.06%	$634.59K
Twelve points wealth management	43.39K	0.03%	$132.77K
Requisite capital management	55.65K	0.03%	$170.28K
Gsa capital partners llp	65.19K	0.02%	$199.00K
Abel hall	11.04K	0.01%	$30.57K
Riverview capital advisers	12.73K	0.01%	$38.96K

Top Buyers

Holder	Shares	% Assets	Change
Blackrock	1.41M	0.00%	1.29M
Captrust financial advisors	602.28K	0.00%	100.37K
Balentine	84.47K	0.01%	84.47K
Susquehanna group, llp	102.46K	0.00%	71.46K
Millennium management	70.75K	0.00%	70.75K

Top Sellers

Holder	Shares	% Assets	Change
Ra capital management	-	-	-3.03M
Awm investment company	207.38K	0.06%	-473.55K
Perkins capital management	-	-	-131.00K
Ensign peak advisors	-	-	-102.16K
Wealth enhancement advisory services	-	-	-99.16K

New Positions

Holder	Shares	% Assets	Change	Value
Balentine	84.47K	0.01%	84.47K	$258.49K
Caprock group	33.52K	0.00%	33.52K	$108.28K
Two sigma investments, lp	31.74K	0.00%	31.74K	$97.11K
Wellington management group llp	27.68K	-	27.68K	$163.88K
Birch hill investment advisors	27.29K	0.00%	27.29K	$83.52K

Sold Out

Holder	Change
Sterling capital management	-28.00
Gamma investing	-40.00
Ronald blue trust	-90.00
Rise advisors	-172.00
Federated hermes	-231.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Sep 30, 2025	25	-53.70%	4,390,411	-75.39%	8	0.68%	12	-52.00%	3	-86.96%
Jun 30, 2025	58	-18.31%	18,609,445	-7.56%	37	1.65%	27	-18.18%	24	26.32%
Mar 31, 2025	72	-7.69%	20,231,380	11.75%	48	1.65%	34	-27.66%	19	46.15%
Dec 31, 2024	74	23.33%	16,911,303	-6.01%	50	1.75%	43	43.33%	13	8.33%
Sep 30, 2024	60	-10.45%	17,992,458	8.53%	53	2.03%	30	-31.82%	12	-14.29%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
abrdn Healthcare Investors	1.15M	3.01%	52.33K
abrdn Healthcare Opportunities	1.13M	2.98%	-
Vanguard Total Stock Mkt Idx Inv	744.38K	1.96%	-16.44K
Invesco Dorsey Wright SmallCap Momt ETF	603.77K	1.79%	1.09K
iShares Russell 2000 ETF	671.86K	1.78%	-
abrdn Healthcare Opportunities Fund	640.00K	1.70%	151.54K
Fidelity Small Cap Index	288.83K	0.77%	-
Vanguard Institutional Extnd Mkt Idx Tr	278.89K	0.73%	-86.97K
iShares Russell 2000 Growth ETF	236.00K	0.63%	-
JPMorgan US Small Company L	199.43K	0.53%	-77.13K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Dec 02, 2025	Harrison Robert Gardner	Chief Information Officer	Sell	$5.86K
Dec 02, 2025	Kearney Paul	Chief Data Officer	Sell	$94.68K
Nov 26, 2025	Kearney Paul	Chief Data Officer	Sell	$6.97K
Nov 10, 2025	Lindgardt Zhenya	Chief Executive Officer	Sell	$30.38K
Nov 10, 2025	Kearney Paul	Chief Data Officer	Sell	$18.53K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	13
2025 Q3	-	23
2025 Q2	-	17
2025 Q1	-	42
2024 Q4	-	11

SERA Ownership FAQ

Who Owns Sera Prognostics?

Sera Prognostics shareholders are primarily institutional investors at 8.95%, followed by 10.89% insiders and 80.16% retail investors. The average institutional ownership in Sera Prognostics's industry, Diagnostics & Research Stocks, is 45.39%, which Sera Prognostics falls below.

Who owns the most shares of Sera Prognostics?

Sera Prognostics’s largest shareholders are Baker bros. advisors lp (5.5M shares, 11.21%), Whetstone capital advisors (3.63M shares, 7.40%), and Abrdn (2.28M shares, 4.65%). Together, they hold 23.25% of Sera Prognostics’s total shares outstanding.

Does Blackrock own Sera Prognostics?

Yes, BlackRock owns 4.38% of Sera Prognostics, totaling 1.41M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 8.35M$. In the last quarter, BlackRock increased its holdings by 1.29M shares, a 1085.12% change.

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

Whetstone capital advisors is Sera Prognostics’s biggest shareholder by percentage of total assets invested, with 3.08% of its assets in 3.63M Sera Prognostics shares, valued at 11.12M$.

Who is the top mutual fund holder of Sera Prognostics shares?

abrdn Healthcare Investors is the top mutual fund holder of Sera Prognostics shares, with 3.01% of its total shares outstanding invested in 1.15M Sera Prognostics shares.

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