Cerus (CERS)ARK Investment Management reduced its stake -357K shares

18.9M

Shares reported · -357K vs prior quarter

0.18%

Disclosed portfolio weight

$30M

Reported value

Holdings as of

Sep 30, 2025

Filed

Nov 12, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Nov 6, 2025Company filing · Form 8-K · ResultsReported its results

What came next

1. Jan 11, 2026Company filing · Form 8-K · ResultsReported its results
2. Jan 19, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On January 19, 2026, Timothy L. Moore, a member of the class of directors whose terms of office expire at the 2026 annual meeting of stockholders (the “2026 Annual Meeting”) of Cerus Corporation (the “Company”), informed the Company that he would not stand for re-election at the 2026 Annual Meeting.”
3. Mar 2, 2026Company filing · Form 8-K · ResultsReported its results

How to read SEC Form 13F-HR

Form 13F is the quarterly report in which investment managers that oversee $100 million or more list the US-listed stocks and some other securities they held on the last day of the quarter.

Full guide: What is an SEC Form 13F?

What else is on file for Cerus

For Cerus, OQRO holds 1 fund holdings report (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its CERS page.

How this filing works

• SEC Form 13F

Other disclosures at Cerus

• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRMay 12, 2026
• USAspending.gov award recordApr 13, 2026
• SEC Form 13F-HRFeb 11, 2026
• SEC Form 4Aug 25, 2025
• SEC Form 13F-HRAug 14, 2025

Everything OQRO holds on this company is on its CERS page.