Does Baker Bros. Advisors own SERA stock?

Yes. As of its Q2 2026 13F, Baker Bros. Advisors holds 5,498,170 shares of SERA (Sera Prognostics), worth $10M.

How many shares of SERA does Baker Bros. Advisors own?

As of its Q2 2026 13F, Baker Bros. Advisors holds 5,498,170 shares of SERA (Sera Prognostics).

As of its Q2 2026 13F, Baker Bros. Advisors' SERA position is worth $10M.

Baker Bros. Advisors first reported SERA in its Q3 2021 13F and has listed it in 20 quarterly 13F filings.

Position history for BAKER BROS. ADVISORS LP's holdings in SERA PROGNOSTICS INC

Current Value

$10M

Current Shares

5.5M

Total Value Change

+$7.8M

Total Shares Change

+5.3M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Unchanged	5.5M	0.0%	$10M	0.1%	$1.82	0
2026-Q1	Unchanged	5.5M	0.0%	$11.2M	0.1%	$2.11	0
2025-Q4	Unchanged	5.5M	0.0%	$16.2M	0.1%	$2.90	0
2025-Q3	Unchanged	5.5M	0.0%	$16.8M	0.1%	$3.05	0
2025-Q2	Unchanged	5.5M	0.0%	$15.2M	0.1%	$4.09	0
2025-Q1	Increased	5.5M	+1.2%	$20.2M	0.2%	$3.54	34
2024-Q4	Unchanged	5.4M	0.0%	$44.2M	0.5%	$8.34	0
2024-Q3	Unchanged	5.4M	0.0%	$42.4M	0.4%	$7.68	0
2024-Q2	Unchanged	5.4M	0.0%	$32.2M	0.4%	$5.92	0
2024-Q1	Unchanged	5.4M	0.0%	$49.5M	0.6%	$9.10	0
2023-Q4	Increased	5.4M	+258.6%	$32.5M	0.4%	$5.98	56
2023-Q3	Decreased	1.5M	-14.8%	$2.8M	0.0%	$1.86	0
2023-Q2	Decreased	1.8M	-0.7%	$5.9M	0.0%	$3.53	0
2023-Q1	Increased	1.8M	+787.6%	$6.9M	0.0%	$3.84	44
2022-Q4	Unchanged	201,562	0.0%	$253,968	0.0%	$1.26	0
2022-Q3	Unchanged	201,562	0.0%	$322,000	0.0%	$1.55	0
2022-Q2	Unchanged	201,562	0.0%	$331,000	0.0%	$1.81	0
2022-Q1	Unchanged	201,562	0.0%	$764,000	0.0%	$3.74	0
2021-Q4	Unchanged	201,562	0.0%	$1.4M	0.0%	$7.00	0
2021-Q3	New	201,562	-	$2.2M	0.0%	$10.45	36