Celldex Therapeutics

CLDX • NASDAQ

Celldex Therapeutics is a biotechnology company in the healthcare sector on NASDAQ, led by Anthony S. Marucci, with a market cap of $1.8B. As of Q3 2025, 106% of shares are held by 177 institutional investors, with Kynam Capital Management, LP as the largest holder at 9.19%.

Chief Executive OfficerAnthony S. Marucci

Market Cap$1.8B

Biotechnology

Healthcare

Employees160.0

Websitecelldex.com

Country

United States of America

Overview

Overview of institutional ownership in CLDX as of Q3 2025 with a market cap of $1.7B

All Institutions

Institutions: 177
Value Held: $1.8B
Shares Held: 70.6M
Avg Position: $10.3M
Median Position: $799.2K

Hedge Funds

Hedge Funds: 34
Value Held: $602.9M
Shares Held: 23.3M
Avg Position: $17.7M
Median Position: $4.5M

Ownership Breakdown

Institutional (non-HF)

71.23%

$1.2B

Hedge Funds

35.09%

$602.9M

Retail & Other

Based on market cap of $1.7B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in CLDX as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
K Kynam Capital Management, LP Hedge Fund•Long/Short	Jared Joseph Keller COO	$157.8M 11.75% of portfolio	9.19% 6.1M shares	Q4 2021 Held for 3y 11m	$1.3B
WELLINGTON MANAGEMENT CO LLP Long Only Manager	Jean Marie Hynes CEO	$150.0M 0.03% of portfolio	8.73% 5.8M shares	Q4 2020 Held for 4y 11m	$571.21B
B BlackRock, Inc. Institution	-	$142.4M 0.00% of portfolio	8.29% 5.5M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
FMR LLC Institution	-	$128.4M 0.01% of portfolio	7.47% 5.0M shares	Q1 2021 Held for 4y 8m	$1.92T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$102.3M 0.00% of portfolio	5.96% 4.0M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	Steven Alan Cohen CEO	$100.7M 0.23% of portfolio	5.86% 3.9M shares	Q3 2022 Held for 3y 2m	$43.2B
B Bellevue Group AG Institution	-	$92.0M 1.92% of portfolio	5.36% 3.6M shares	Q2 2022 Held for 3y 5m	$4.8B
COMMODORE CAPITAL LP Hedge Fund•Long/Short	Michael Jonathan Kramarz Managing Partner	$78.3M 3.82% of portfolio	4.56% 3.0M shares	Q4 2020 Held for 4y 11m	$2.0B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$73.5M 0.00% of portfolio	4.28% 2.8M shares	Q3 2020 Held for 5y 2m	$2.88T
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	Robert W Sharps President	$61.6M 0.01% of portfolio	3.59% 2.4M shares	Q4 2020 Held for 4y 11m	$912.31B

Net Capital Flow

Institutional buying and selling activity for CLDX in Q3 2025

Traded: −$44.3M
Buyers: 88
Sellers: 82
Total Bought: +$167.0M
Total Sold: −$211.3M
Avg Position: $8.8M

Biggest Buyers

Institution	Net Bought	Current Position
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	+$28.3M +1.1M shares	$100.7M 3.9M shares
B BRAIDWELL LP Hedge Fund•Multi-Strategy	+$15.3M +591.7K shares	$15.3M 591.7K shares
WELLINGTON MANAGEMENT CO LLP Long Only Manager	+$14.7M +567.7K shares	$150.0M 5.8M shares
E EVENTIDE ASSET MANAGEMENT, LLC Long Only Manager	+$13.0M +502.9K shares	$48.1M 1.9M shares
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$12.9M +498.0K shares	$25.2M 975.2K shares
STATE STREET CORP Institution	+$11.3M +436.6K shares	$73.5M 2.8M shares
Eversept Partners, LLC Hedge Fund•Long/Short	+$8.2M +315.2K shares	$29.9M 1.2M shares
GOLDMAN SACHS GROUP INC Institution	+$7.8M +302.0K shares	$26.6M 1.0M shares
Affinity Asset Advisors, LLC Hedge Fund•Long/Short	+$7.8M +300.0K shares	$7.8M 300.0K shares
B Bellevue Group AG Institution	+$6.5M +250.1K shares	$92.0M 3.6M shares

Biggest Sellers

Institution	Net Sold	Current Position
PRICE T ROWE ASSOCIATES INC /MD/ Long Only Manager	−$37.1M −1.4M shares	$61.6M 2.4M shares
Woodline Partners LP Hedge Fund•Long/Short	−$33.7M −1.3M shares	$5.2M 199.3K shares
Vestal Point Capital, LP Hedge Fund•Long/Short	−$14.1M −545.0K shares	$31.2M 1.2M shares
FMR LLC Institution	−$12.3M −477.0K shares	$128.4M 5.0M shares
Logos Global Management LP Hedge Fund•Long/Short	−$12.2M −600.0K shares	Sold Off 0 shares
UBS Group AG Institution	−$11.0M −424.8K shares	$10.8M 416.4K shares
COMMODORE CAPITAL LP Hedge Fund•Long/Short	−$10.9M −421.7K shares	$78.3M 3.0M shares
D D. E. Shaw & Co., Inc. Institution	−$10.0M −388.3K shares	$6.7M 257.3K shares
MORGAN STANLEY RIA/Wealth	−$9.0M −349.6K shares	$8.1M 311.9K shares
R READYSTATE ASSET MANAGEMENT LP Hedge Fund•Multi-Strategy	−$7.5M −288.5K shares	$1.2M 46.5K shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited CLDX in Q3 2025

New Positions: 12
New Value: $22.9M
Exited Positions: 27
Exited Value: $32.0M

New Positions

Institution	Position Value
B BRAIDWELL LP Hedge Fund•Multi-Strategy	$15.3M 591.7K shares
Propel Bio Management, LLC Hedge Fund•Sector	$4.0M 155.0K shares
S Simplify Asset Management Inc. Institution	$2.2M 85.0K shares
D DAFNA Capital Management LLC Hedge Fund•Event Driven	$634.3K 24.5K shares
Cetera Investment Advisers RIA/Wealth	$256.2K 9.9K shares
T TRANSCEND WEALTH COLLECTIVE, LLC RIA/Wealth	$239.0K 9.2K shares
A Argent Trust Co Institution	$219.4K 8.5K shares
B BRYN MAWR TRUST CO/PA Institution	$42.2K 1.6K shares
O Optiver Holding B.V. Institution	$6.8K 264.0 shares
Strategic Advocates LLC RIA/Wealth	$3.4K 130.0 shares

Exited Positions

Institution	Previous Position
Logos Global Management LP Hedge Fund•Long/Short	$12.2M 600.0K shares
A AXA Institution	$3.8M 185.1K shares
Cinctive Capital Management LP Hedge Fund•Multi-Strategy	$2.8M 138.0K shares
Schonfeld Strategic Advisors LLC Hedge Fund•Multi-Strategy	$2.4M 118.8K shares
Trexquant Investment LP Hedge Fund•Quant	$2.3M 112.5K shares
Exome Asset Management LLC Hedge Fund•Sector	$1.5M 73.0K shares
Sovran Advisors, LLC RIA/Wealth	$842.0K 39.5K shares
TWO SIGMA ADVISERS, LLC Hedge Fund•Multi-Strategy	$826.2K 40.6K shares
P Perbak Capital Partners LLP Institution	$822.3K 40.4K shares
SPRINGBOK CAPITAL MANAGEMENT, LLC Fund of Funds	$632.2K 31.1K shares

Options Activity

Institutions with the largest Call and Put options positions in CLDX as of Q3 2025

Call Positions: 5
Call Value: $2.5M
Put Positions: 6
Put Value: $5.7M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$845.9K 327.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$835.6K 323.0 contracts
W WOLVERINE TRADING, LLC Institution	$468.8K 179.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$152.6K 59.0 contracts
Walleye Trading LLC RIA/Wealth	$147.5K 57.0 contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$2.2M 839.0 contracts
LEUCADIA NATIONAL CORP Institution	$2.1M 797.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$962.4K 372.0 contracts
J JANE STREET GROUP, LLC Institution	$315.6K 122.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$77.6K 30.0 contracts
Walleye Trading LLC RIA/Wealth	$62.1K 24.0 contracts

Most Committed Institutions

Institutions with CLDX as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
K Kynam Capital Management, LP Hedge Fund•Long/Short	Jared Joseph Keller COO	11.75% $157.8M	9.19% 6.1M shares	Q4 2021 Held for 3y 11m	$1.3B
5 5AM Venture Management, LLC Institution	-	4.71% $12.9M	0.75% 497.3K shares	Q2 2023 Held for 2y 5m	$273.0M
Propel Bio Management, LLC Hedge Fund•Sector	Leen Kawas Managing Partner	4.01% $4.0M	0.23% 155.0K shares	Q3 2025 Held for 2 months	$99.9M
COMMODORE CAPITAL LP Hedge Fund•Long/Short	Michael Jonathan Kramarz Managing Partner	3.82% $78.3M	4.56% 3.0M shares	Q4 2020 Held for 4y 11m	$2.0B
TSP Capital Management Group, LLC Private Equity	Aaron Michael Perrine Managing Partner	2.60% $9.7M	0.57% 375.9K shares	≤ Q2 2013 Held for 12y 5m+	$373.7M
Eversept Partners, LLC Hedge Fund•Long/Short	Rishi Rasesh Shah President	2.29% $29.9M	1.74% 1.2M shares	Q4 2021 Held for 3y 11m	$1.3B
N Novo A/S Institution	-	2.04% $31.0M	1.81% 1.2M shares	Q2 2024 Held for 1y 5m	$1.5B
Polygon Management Ltd. Hedge Fund•Multi-Strategy	Stephen Lionel Prince CEO	1.98% $7.9M	0.46% 303.6K shares	Q4 2024 Held for 11 months	$396.0M
B Bellevue Group AG Institution	-	1.92% $92.0M	5.36% 3.6M shares	Q2 2022 Held for 3y 5m	$4.8B
Vestal Point Capital, LP Hedge Fund•Long/Short	Ryan Christopher Wilder CIO	1.58% $31.2M	1.81% 1.2M shares	Q4 2024 Held for 11 months	$2.0B

Hedge Fund Spotlight

Discover hedge funds investing in CLDX

Kynam Capital Management, LP

Hedge Fund • Long/Short

Portfolio ManagerJared Joseph Keller

Portfolio Value: $1.3B
Positions: 35
Last Reported: Q3 2025

Sector Allocation

Position in Celldex Therapeutics

Market Value: $157.8M
Shares Held: 6.1M
Portfolio Weight: 11.75%
Owned Since: 2021-Q4

Top Holding	Sector	Market Value	Weight
1 Celldex Therapeutics CLDX	Biotechnology Healthcare	$157.8M	11.75%
2 Syndax Pharmaceuticals SNDX	Biotechnology Healthcare	$131.1M	9.76%
3 Vera Therapeutics VERA	Biotechnology Healthcare	$117.0M	8.71%