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Jim Simons's Celldex Therapeutics, Inc. (CLDX) position

Not anymore: Jim Simons fully exited CLDX in Q1 2026. The position peaked at an amount we cannot price in Q1 2021.
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Value at exit
an amount we cannot price
Shares at exit
118K
Quarter-end price
No quarter-end price available

Average buy price is hidden here because at least one covered purchase quarter has no usable local mean price.

CLDX price vs Simons's position

Dates
$34$36$38$40← Earlier —6 purchases, 4 sells
Average closing price · filing quarter
Price range · filing quarter

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Exited −118K −100.0% 0 May 14, 2026
Q4 2025 Reduced −76K −39.1% 118K Feb 12, 2026
Q3 2025 Added +13K +7.3% 195K Nov 13, 2025
Q2 2025 Added +35K +23.7% 181K Aug 13, 2025
Q1 2025 Added +10K +7.3% 147K May 14, 2025
Q4 2024 New +137K 137K Feb 13, 2025
Q2 2024 Reduced −270K −86.3% 43K Aug 9, 2024
Q1 2024 New +312K 312K May 13, 2024
Q3 2022 New +26K 26K Nov 14, 2022
Q3 2021 Reduced −203K −55.7% 161K Nov 12, 2021
Q2 2021 Reduced −177K −32.8% 364K Aug 13, 2021
Q1 2021 First covered 541K May 13, 2021
Data through Q1 2026 · filed May 14, 2026
12 grouped rows from 12 quarters

More Simons positions

Common questions

Does Jim Simons own CLDX?

Not currently. Jim Simons fully exited CLDX in Q1 2026, and the complete history is above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jim Simons buy CLDX?

Jim Simons held CLDX since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jim Simons sell CLDX?

Yes. Jim Simons reduced and then fully exited CLDX by Q1 2026; the reductions are in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of CLDX does Jim Simons own?

None as of the latest filing: Jim Simons has exited CLDX. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jim Simons pay for CLDX?

Jim Simons began building the CLDX position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.