L3VLUP
ProSign in

CERS in the 13F filings

Cerus Corp · CUSIP 157085101

Sector · Medical devices and instrumentsTheme · Healthcare: biopharma and medtech· L3VLUP-definedTheme · Surgical, medical and electromedical devices
Quarter
Q2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 12 May 2026
Managers listing it
16
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 1 listed it in both
Shares listed
35,326,507
combined, among listed positions
Reported value
$64m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 10 buyers (opened or added shares) and 9 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +941,777.

Managers listing CERS in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

16 of 16 holders

ActionFiling
ARK Investment Management LLC19,161,148$35m0.27%Added+960,94412 May 2026 (the filing on sec.gov)
D. E. Shaw & Co.3,731,151$6.8munder 0.1%Trimmed-142,22015 May 2026 (the filing on sec.gov)
Acadian Asset Management LLC3,709,501$6.7munder 0.1%Added+431,39013 May 2026 (the filing on sec.gov)
Two Sigma Investments LP2,745,021$5.0munder 0.1%Added+887,91115 May 2026 (the filing on sec.gov)
AQR Capital Management LLC2,113,232$3.8munder 0.1%Added+110,03415 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,205,737$2.2munder 0.1%Added+172,46515 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP782,563$1.4munder 0.1%Added+413,25615 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC578,900$1.1munder 0.1%Added+80,90014 May 2026 (the filing on sec.gov)
Millennium Management LLC430,219$783kunder 0.1%Trimmed-537,47515 May 2026 (the filing on sec.gov)
Invesco Ltd407,613$742kunder 0.1%Added+98,44512 May 2026 (the filing on sec.gov)
AllianceBernstein LP187,107$385kunder 0.1%Trimmed-33,02215 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc125,442$229kunder 0.1%Added+14,39415 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC54,939$100kunder 0.1%Trimmed-47,04415 May 2026 (the filing on sec.gov)
Jane Street Group LLC53,183$97kunder 0.1%Trimmed-200,38712 May 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP26,877$49kunder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Neuberger Berman Group LLC13,874$25kunder 0.1%Held027 Oct 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (1)

Exited (4)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
1 in Q3 2024 to 1 in Q2 2026

Tracked managers listing it, at least.

01232017201820192020202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
CERS by quarter
QuarterHoldersReported valueBuyersSellers
Q4 20161$2.9mn.a.n.a.
Q1 20171$3.3mn.a.n.a.
Q2 20171$4.2mn.a.n.a.
Q3 20171$7.3mn.a.n.a.
Q4 20171$12mn.a.n.a.
Q1 20182$30mn.a.n.a.
Q2 20182$39mn.a.n.a.
Q3 20182$47mn.a.n.a.
Q4 20182$35mn.a.n.a.
Q1 20191$48mn.a.n.a.
Q2 20191$48mn.a.n.a.
Q3 20191$45mn.a.n.a.
Q4 20191$40mn.a.n.a.
Q1 20201$65mn.a.n.a.
Q2 20201$144mn.a.n.a.
Q3 20201$188mn.a.n.a.
Q4 20203$205mn.a.n.a.
Q1 20213$154mn.a.n.a.
Q2 20212$124mn.a.n.a.
Q3 20212$104mn.a.n.a.
Q4 20212$107mn.a.n.a.
Q1 20223$90mn.a.n.a.
Q2 20223$86mn.a.n.a.
Q3 20223$61mn.a.n.a.
Q4 20223$59mn.a.n.a.
Q1 20232$66mn.a.n.a.
Q2 20231$51mn.a.n.a.
Q3 20231$33mn.a.n.a.
Q4 20231$45m10
Q1 20241$41m10
Q2 20241$35m01
Q3 20241$32m01
Q4 20241$32m10
Q1 20251$29m01
Q2 20251$27m01
Q3 20251$30m01
Q4 20251$37m136
Q1 20261$35m109
Q2 20261$52m137

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

CERS and LLY →CERS and JNJ →CERS and VRTX →Choose a stock to compare with CERS →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own CERS, latest filings →Back to the 13F Explorer →