Company · Ownership research

SERA PROGNOSTICS, INC. SERA

CIK 0001534969 · CUSIP 81749D107

Insider tradingInitial holdingsInstitutional holders

Quarter-end disclosures, not live holdings.

This page lists the top 20 of 47 rows by value; the complete set is available through the API.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BAKER BROS. ADVISORS LP CIK 1263508 · View history	$10.01M 5,498,170 shares	0.05%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
02	Whetstone Capital Advisors, LLC CIK 1607278 · View history	$6.02M 3,306,889 shares	1.59%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
03	Aberdeen Group plc CIK 1716774 · View history	$5.01M 2,753,525 shares	0.01%	+202.75K(+7.90%)Added	SEC filing ↗ Jul 31, 2026	▾
04	Vivo Capital, LLC CIK 1674712 · View history	$3.00M 1,650,440 shares	0.27%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
05	VANGUARD CAPITAL MANAGEMENT LLC CIK 2100119 · View history	$2.36M 1,297,792 shares	0.00%	+93.68K(+7.80%)Added	SEC filing ↗ Aug 13, 2026	▾
06	CAPTRUST FINANCIAL ADVISORS CIK 1512024 · View history	$975.07K 535,755 shares	0.00%	-1.01K(-0.20%)Reduced	SEC filing ↗ Aug 13, 2026	▾
07	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$635.47K 348,967 shares	0.00%	-14.65K(-4.00%)Reduced	SEC filing ↗ Aug 12, 2026	▾
08	BlackRock, Inc. CIK 2012383 · View history	$402.89K 221,369 shares	0.00%	+25.26K(+12.90%)Added	SEC filing ↗ Aug 7, 2026	▾
09	AWM Investment Company, Inc. CIK 1535264 · View history	$377.44K 207,382 shares	0.03%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2026	▾
10	VANGUARD FIDUCIARY TRUST CO CIK 933478 · View history	$311.05K 170,908 shares	0.00%	+1.25K(+0.70%)Added	SEC filing ↗ Aug 13, 2026	▾
11	STATE STREET CORP CIK 93751 · Amended · View history	$227.12K 124,792 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Sep 22, 2026	▾
12	MILLENNIUM MANAGEMENT LLC CIK 1273087 · View history	$134.66K 73,986 shares	0.00%	-17.52K(-19.10%)Reduced	SEC filing ↗ Aug 14, 2026	▾
13	Perigon Wealth Management, LLC CIK 1575239 · View history	$132.29K 72,685 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 7, 2026	▾
14	NORTHERN TRUST CORP CIK 73124 · View history	$124.84K 68,595 shares	0.00%	-27.94K(-28.90%)Reduced	SEC filing ↗ Aug 13, 2026	▾
15	Bank of New York Mellon Corp CIK 1390777 · View history	$110.89K 60,927 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Aug 6, 2026	▾
16	BRIDGEWAY CAPITAL MANAGEMENT, LLC CIK 1107261 · View history	$101.38K 55,705 shares	0.00%	+10.00K(+21.90%)Added	SEC filing ↗ Aug 14, 2026	▾
17	Requisite Capital Management, LLC CIK 1730573 · View history	$101.28K 55,648 shares	0.02%	0(0.00%)Unchanged	SEC filing ↗ Aug 7, 2026	▾
18	MORGAN STANLEY CIK 895421 · View history	$92.77K 50,972 shares	0.00%	-54.05K(-51.50%)Reduced	SEC filing ↗ Aug 13, 2026	▾
19	Qube Research & Technologies Ltd CIK 1729829 · View history	$92.58K 50,871 shares	0.00%	+30.95K(+155.40%)Added	SEC filing ↗ Aug 14, 2026	▾
20	Ballentine Partners, LLC CIK 1374889 · View history	$90.39K 49,664 shares	0.00%	0(0.00%)Unchanged	SEC filing ↗ Jul 17, 2026	▾

Showing 20 / 47 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

Cancelled or null records excluded

Disclosed shares

17,056,699

Not deduplicated across managers

Disclosed value

$31.05M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

SERA PROGNOSTICS, INC. · Q2 2026

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.