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CLDX in the 13F filings

Celldex Therapeutics Inc New · CUSIP 15117B202

Sector · Pharmaceuticals and biotechnologyTheme · Healthcare: biopharma and medtech· L3VLUP-defined
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
2 Sep 2026
latest of these filings; the earliest 3 Aug 2026
Managers listing it
19
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q1 2026 and Q2 2026; 4 listed it in both
Shares listed
21,132,026
combined, among listed positions
Reported value
$786m
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: 11 buyers (opened or added shares) and 12 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +805,058.

Managers listing CLDX 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
Wellington Management Group LLP9,543,671$355m0.06%Added+983,19514 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc4,685,223$174munder 0.1%Added+2,598,89114 Aug 2026 (the filing on sec.gov)
Fidelity (FMR LLC)3,722,888$139munder 0.1%Trimmed-26,16013 Aug 2026 (the filing on sec.gov)
Millennium Management LLC1,170,787$44munder 0.1%Trimmed-82,74514 Aug 2026 (the filing on sec.gov)
Woodline Partners LP700,830$26m0.08%Added+200,70314 Aug 2026 (the filing on sec.gov)
Two Sigma Investments LP661,235$25munder 0.1%Added+524,22014 Aug 2026 (the filing on sec.gov)
Point72 Asset Management LP117,217$4.4munder 0.1%Trimmed-3,112,72214 Aug 2026 (the filing on sec.gov)
Invesco Ltd103,131$3.8munder 0.1%Added+9,44714 Aug 2026 (the filing on sec.gov)
AQR Capital Management LLC86,893$3.2munder 0.1%Added+79,11614 Aug 2026 (the filing on sec.gov)
PDT Partners LLC80,899$3.0m0.16%Trimmed-16,92314 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP88,640$2.8munder 0.1%Added+23,10014 Aug 2026 (the filing on sec.gov)
Man Group PLC63,504$2.4munder 0.1%Newnew14 Aug 2026 (the filing on sec.gov)
Janus Henderson Group Ltd30,042$1.1munder 0.1%Added+4,40014 Aug 2026 (the filing on sec.gov)
Balyasny Asset Management LLC26,313$979kunder 0.1%Trimmed-58,71314 Aug 2026 (the filing on sec.gov)
Susquehanna International Group LLP19,080$710kunder 0.1%Trimmed-16,86814 Aug 2026 (the filing on sec.gov)
D. E. Shaw & Co.17,826$663kunder 0.1%Trimmed-35,03414 Aug 2026 (the filing on sec.gov)
Brevan Howard Capital Management LP8,131$303kunder 0.1%Trimmed-1,12414 Aug 2026 (the filing on sec.gov)
Quantbot Technologies LP2,935$109kunder 0.1%Added+46312 Aug 2026 (the filing on sec.gov)
Acadian Asset Management LLC2,781$102kunder 0.1%Newnew13 Aug 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 (2)

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.
3 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

0246202120222023202420252026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
CLDX by quarter
QuarterHoldersReported valueBuyersSellers
Q3 20201$2.5mn.a.n.a.
Q4 20203$7.7mn.a.n.a.
Q1 20212$5.5mn.a.n.a.
Q3 20211$41mn.a.n.a.
Q4 20213$40mn.a.n.a.
Q1 20223$83mn.a.n.a.
Q2 20223$65mn.a.n.a.
Q3 20222$5.7mn.a.n.a.
Q4 20225$265mn.a.n.a.
Q1 20232$152mn.a.n.a.
Q2 20233$216mn.a.n.a.
Q3 20233$189mn.a.n.a.
Q4 20234$432m40
Q1 20244$444m22
Q2 20244$450m40
Q3 20243$447m21
Q4 20243$341m12
Q1 20253$221m12
Q2 20253$90m30
Q3 20253$253m20
Q4 20254$283m513
Q1 20264$393m153
Q2 20263$384m1112

Compare with…

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

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

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 CLDX, latest filings →Back to the 13F Explorer →