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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
30 Jun 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 13 Aug 2026
Managers listing it
19
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 1 listed it in both
Shares listed
38,324,579
combined, among listed positions
Reported value
$111m
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: 13 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +2,998,072.

Managers listing CERS in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

19 of 19 holders

ActionFiling
ARK Investment Management LLC17,932,099$52m0.34%Trimmed-1,229,04914 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.5,485,983$16munder 0.1%Added+1,754,83214 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC4,270,074$12munder 0.1%Added+560,57313 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP3,484,633$10munder 0.1%Added+739,61214 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC1,878,275$5.5munder 0.1%Trimmed-234,95714 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)1,412,678$4.1munder 0.1%Added+206,94113 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC736,682$2.2munder 0.1%Newnew2 Sep 2026 (the filing on sec.gov)
Renaissance Technologies LLC671,700$2.0munder 0.1%Added+92,80013 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP1,029,160$1.9munder 0.1%Added+842,05314 Aug 2026 (the filing on sec.gov)
Invesco Ltd318,592$930kunder 0.1%Trimmed-89,02114 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP279,407$816kunder 0.1%Trimmed-503,15614 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP228,172$666kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc165,533$484kunder 0.1%Added+40,09114 Aug 2026 (the filing on sec.gov)
Arrowstreet Capital LP153,731$449kunder 0.1%Newnew13 Aug 2026 (the filing on sec.gov)
Squarepoint Ops LLC109,396$319kunder 0.1%Added+54,45714 Aug 2026 (the filing on sec.gov)
Millennium Management LLC108,481$317kunder 0.1%Trimmed-321,73814 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC29,887$87kunder 0.1%Trimmed-23,29614 Aug 2026 (the filing on sec.gov)
Schonfeld Strategic Advisors LLC15,355$45kunder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC14,741$43kunder 0.1%Added+86727 Oct 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 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 (4)

Exited (1)

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 →