No AI summary for this filing type
View Full Filing (SEC EDGAR)Celldex Therapeutics Inc
$27.53-4.8%
+$648.4M
Net Activity
+21.84% total shares
Institutions Holding
260
Popularity Rank
#2410
Avg Weight
0.35%
Total Value
$3.3B
Market Cap
$1.8B
260 institutions currently hold CLDX, with 168 net buyers and 78 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
78
Net Buying Institutions
168
Top 5 by Value
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Across its top 20 institutional holders, CLDX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 9/100, avg. turnover score 43/100).
CLDX ranks #2410 out of 37696 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
CLDX is a top-conviction position for Kynam Capital Management, LP — at 10.9% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in CLDX belongs to Wellington Management Group LLP, but the position matters far more to Kynam Capital Management, LP, who has 10.9% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
GAMMA Investing LLC has added to its CLDX position for two straight quarters, increasing it by $13.8K to reach $22.6K today.
GHP Investment Advisors, Inc. has trimmed its CLDX position for two straight quarters, cutting it by $695.0 while still holding $98.0.
CLDX is down 4.8% today, but institutions show net buying of $648.4M this quarter — a divergence between today's price move and the underlying institutional flow.
CLDX reported a net loss of $300.5M over the trailing twelve months.
+$987.4M
Total Buy Value
$324.2M
Total Sell Value
168
Net Buyers
78
Net Sellers
CLDX
Q2 2026
Top 5 Institutional Movers
+$108.2M
-$98.0M
+$90.2M
+$83.6M
CLDX does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
No Form 144 planned sale filings in the last 90 days
2
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| FMR LLC | 13G/A | 2026-10-07 | 10.7% |
| Kynam Capital Management, LP | 13G/A | 2026-08-14 | 6.8% |
2
Filings (14d)
No AI summary for this filing type
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)15117B202
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,086
Total reported value
$377.7B
Held by 4086 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
6,178
Total reported value
$2.9T
Held by 6178 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,841
Total reported value
$1.8T
Held by 5841 institutions — one of the most-tracked stocks on AlphaSMO
Access CLDX's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/CLDXCLI
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