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Equibles

BAKER BROS. ADVISORS LP

Position in CERS — Cerus Corp

CIK 1263508 NEW YORK, NY
Back to CERS Full portfolio

Position in CERS

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$18,674,658
+$459,471 QoQ
Shares Held
6,395,431
-36.1% QoQ
Ownership
3.17%
of shares outstanding
% of Portfolio
0.09%
of 13F equity value
Holder Rank
#4
of 186 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CERS Over Time

Shares Held

Position Value (USD)

Position in Medical Devices

Healthcare · as of Jun 30, 2026

BAKER BROS. ADVISORS LP holds $28,681,327 across 2 Medical Devices names. CERS ranks #1 (65.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 CERS
Cerus Corp
This page 		6,395,431 $18,674,658
2 SERA
Sera Prognostics, Inc.
 5,498,170 $10,006,669

All Filings in CERS

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $18,674,658 6,395,431
2026-03-31 $18,215,187 10,008,345
2025-12-31 $20,617,190 10,008,345
2025-09-30 $15,913,268 10,008,345
2025-06-30 $18,166,220 12,883,844
2025-03-31 $26,898,010 19,351,087
2024-12-31 $29,995,102 19,477,339
2024-09-30 $33,890,569 19,477,339
2024-06-30 $34,280,116 19,477,339
2024-03-31 $36,812,170 19,477,339
2023-12-31 $42,071,052 19,477,339
2023-09-30 $27,927,991 17,239,501
2023-06-30 $39,526,192 16,067,558
2023-03-31 $47,720,647 16,067,558
2022-12-31 $58,646,586 16,067,558
2022-09-30 $57,843,208 16,067,558
2022-06-30 $84,997,381 16,067,558
2022-03-31 $75,285,440 13,713,195
2021-12-31 $93,386,857 13,713,195
2021-09-30 $83,513,357 13,713,195
2021-06-30 $81,044,982 13,713,195
2021-03-31 $82,416,301 13,713,195
2020-12-31 $94,895,309 13,713,195
2020-09-30 $85,844,600 13,713,195
2020-06-30 $90,507,087 13,713,195
2020-03-31 $63,766,356 13,713,195