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CLDX · Celldex Therapeutics, Inc.

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$39.94 -1.76 (-4.22%) At close · Aug 20
Market Cap
$3.29B
Shares
78.53M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 257
Total Value: $3,188,520,274
Total Shares: 85,714,877

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 257 13F filers · Δ vs Mar 31, 2026
Top Holder
11.1%
Sep 2023 → Jun 2026 · range 8.4% – 14.0%
−0.6 pts
Top 5
35.5%
Sep 2023 → Jun 2026 · range 35.5% – 43.5%
−1.0 pts
Top 10
52.2%
Sep 2023 → Jun 2026 · range 52.2% – 64.9%
−1.2 pts
HHI
381
Sep 2023 → Jun 2026 · range 381 – 563
Broadly held−24

Quarterly Activity

vs Mar 31, 2026
New
50
Increased
107
Decreased
58
Sold Out
25
Unchanged
42
Holder count: +25
Institutional value: +37.3%
Shares held: +17.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 269
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 744218 CUSIP 15117B202 13F (30d) 244 filings 239 filers Visit website Investor relations