Magnetar Financial’s Celldex Therapeutics CLDX Stock Holding History

Magnetar Financial’s Portfolio CLDX Stock Details CLDX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$296K	Buy	+7,954	New	+$257K	﹤0.01%	790
2024 Q4	–	Sell	-25,513	Closed	-$867K	–	644
2024 Q3	$867K	Buy	25,513 +8,123	+47%	+$310K	0.02%	290
2024 Q2	$644K	Buy	17,390 +6,613	+61%	+$250K	0.01%	314
2024 Q1	$452K	Buy	+10,777	New	+$443K	0.01%	307

Other funds holding CLDX

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

KCM

Kynam Capital Management Princeton, New Jersey $1.81B AUM 192.15% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

DTC

Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return

LGM

Logos Global Management San Francisco, California $2.32B AUM 536.01% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Magnetar Financial's CLDX Position: Q2 2026 in Review

Magnetar Financial opened a new position in Celldex Therapeutics (CLDX) in Q2 2026: 7,954 shares worth $296K. The stake represents ﹤0.01% of the portfolio and ranks #790 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in CLDX as recently as Q3 2024.

Magnetar Financial first reported a position in CLDX in Q1 2024 and has held it in 4 quarters since. The position peaked at $867K in Q3 2024. 254 funds tracked by Wall St. Rank hold CLDX as of Q2 2026.

Magnetar Financial held 7,954 shares of Celldex Therapeutics worth $296K as of Q2 2026.
Celldex Therapeutics was a new Magnetar Financial position in Q2 2026.
Celldex Therapeutics made up ﹤0.01% of Magnetar Financial's portfolio in Q2 2026, its #790 holding.
Magnetar Financial first reported a position in Celldex Therapeutics in Q1 2024 and has held it in 4 quarters since.
Magnetar Financial's Celldex Therapeutics position peaked at $867K in Q3 2024.
254 funds tracked by Wall St. Rank held Celldex Therapeutics as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.