Baker Bros. Advisors LP

SEC CIK: 0001263508
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

CERS holding history

Cerus Corp in every 13F filed by Baker Bros. Advisors LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

CERS overview All 13F holders of CERS Full Q2 2026 holdings

Shares (Q2 2026): 6,395,431
Value: $18.7M
% of portfolio: 0.1%
Quarters held: 22; Since Q1 2021

Holdings of CERS by Baker Bros. Advisors LP, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	6,395,431	$18.7M	0.1%	−3,612,914−36.1%	Reduced	Holders
Q1 2026	10,008,345	$18.2M	0.1%	00.0%	Unchanged	Holders
Q4 2025	10,008,345	$20.6M	0.1%	00.0%	Unchanged	Holders
Q3 2025	10,008,345	$15.9M	0.1%	−2,875,499−22.3%	Reduced	Holders
Q2 2025	12,883,844	$18.2M	0.2%	−6,467,243−33.4%	Reduced	Holders
Q1 2025	19,351,087	$26.9M	0.3%	−126,252−0.6%	Reduced	Holders
Q4 2024	19,477,339	$30.0M	0.3%	00.0%	Unchanged	Holders
Q3 2024	19,477,339	$33.9M	0.4%	00.0%	Unchanged	Holders
Q2 2024	19,477,339	$34.3M	0.4%	00.0%	Unchanged	Holders
Q1 2024	19,477,339	$36.8M	0.5%	00.0%	Unchanged	Holders
Q4 2023	19,477,339	$42.1M	0.5%	+2,237,838+13.0%	Added	Holders
Q3 2023	17,239,501	$27.9M	0.2%	+1,171,943+7.3%	Added	Holders
Q2 2023	16,067,558	$39.5M	0.2%	00.0%	Unchanged	Holders
Q1 2023	16,067,558	$47.7M	0.3%	00.0%	Unchanged	Holders
Q4 2022	16,067,558	$58.6M	0.4%	00.0%	Unchanged	Holders
Q3 2022	16,067,558	$57.8M	0.4%	00.0%	Unchanged	Holders
Q2 2022	16,067,558	$85.0M	0.5%	+2,354,363+17.2%	Added	Holders
Q1 2022	13,713,195	$75.3M	0.4%	00.0%	Unchanged	Holders
Q4 2021	13,713,195	$93.4M	0.5%	00.0%	Unchanged	Holders
Q3 2021	13,713,195	$83.5M	0.4%	00.0%	Unchanged	Holders
Q2 2021	13,713,195	$81.0M	0.4%	00.0%	Unchanged	Holders
Q1 2021	13,713,195	$82.4M	0.4%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.