Celldex Therapeutics, Inc.
US ˙ NasdaqCM ˙ US15117B2025

SecurityCLDX / Celldex Therapeutics, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership296,970 shares
Latest Disclosed Value $ 9,419,888
UBS Group AG ownership in CLDX / Celldex Therapeutics, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 296,970 shares of Celldex Therapeutics, Inc. (US:CLDX) valued at $9,419,888 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 326,462 shares of Celldex Therapeutics, Inc.. This represents a change in shares of -9.03% during the quarter. The current value of the position is $8,888,312 USD.

UBS Group AG has a history of taking positions in derivatives of the underlying security (CLDX) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

CLDX / Celldex Therapeutics, Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 296,970 -29,492 -9.03 9,420 6.24 0.0003
2026-01-29 2025-12-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 326,462 -89,985 -21.61 8,867 -17.70 0.0014
2025-11-13 2025-09-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 416,447 -424,799 -50.50 10,773 -37.07 0.0017
2025-08-14 2025-06-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 841,246 -626,994 -42.70 17,119 -35.76 0.0030
2025-05-13 2025-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 1,468,240 1,078,443 276.67 26,649 170.54 0.0049
2025-02-14 2024-12-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 389,797 223,200 133.98 9,850 73.97 0.0018
2024-11-14 2024-09-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 166,597 6,001 3.74 5,663 -4.73 0.0012
2024-08-14 2024-06-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 160,596 -95,752 -37.35 5,944 -44.76 0.0015
2024-05-13 2024-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 256,348 98,256 62.15 10,759 71.61 0.0027
2024-02-09 2023-12-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 158,092 136,897 645.89 6,270 975.30 0.0019
2023-11-09 2023-09-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 21,195 20,418 2,627.80 583 2,142.31 0.0002
2023-08-11 2023-06-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 777 -60,098 -98.72 26 -98.81 0.0000
2023-05-12 2023-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 60,875 -58,368 -48.95 2,190 -58.79 0.0008
2023-02-08 2022-12-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 119,243 82,315 222.91 5,315 411.95 0.0020
2022-11-10 2022-09-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 36,928 -37,350 -50.28 1,038 -48.18 0.0005
2022-08-10 2022-06-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 74,278 -86,501 -53.80 2,003 -63.42 0.0008
2022-05-16 2022-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 160,779 30,189 23.12 5,476 8.52 0.0018
2022-02-14 2021-12-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 130,590 83,264 175.94 5,046 97.50 0.0014
2021-11-15 2021-09-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 47,326 27,013 132.98 2,555 276.29 0.0008
2021-08-13 2021-06-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 20,313 -34,536 -62.97 679 -39.91 0.0002
2021-05-12 2021-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 54,849 52,091 1,888.72 1,130 2,254.17 0.0004
2021-02-11 2020-12-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 2,758 1,188 75.67 48 108.70 0.0000
2020-11-12 2020-09-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 1,570 980 166.10 23 228.57 0.0000
2020-07-31 2020-06-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 590 -307 -34.23 7 600.00 0.0000
2020-05-01 2020-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 897 -618 -40.79 1 -66.67 0.0000
2020-02-14 2019-12-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 1,515 -3,232 -68.09 3 -70.00 0.0000
2019-11-14 2019-09-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 4,747 1,246 35.59 10 0.00 0.0000
2019-08-14 2019-06-30 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 3,501 3,300 1,641.79 10 900.00 0.0000
2019-05-14 2019-03-31 13F CELLDEX THERAPEUTICS INC COM NEW 15117B202 201 -67,993 -99.71 1 -92.86 0.0000
2019-02-14 2018-12-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 68,194 65,100 2,104.07 14 1,300.00 0.0000
2018-11-14 2018-09-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 3,094 -62,811 -95.31 1 -96.97 0.0000
2018-08-14 2018-06-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 65,905 31,071 89.20 33 -59.26 0.0000
2018-05-15 2018-03-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 34,834 -533 -1.51 81 -19.00 0.0000
2018-02-14 2017-12-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 35,367 -40,995 -53.69 100 -54.34 0.0000
2017-11-14 2017-09-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 76,362 10,623 16.16 219 35.19 0.0001
2017-11-14 2017-06-30 13F/A-1 CELLDEX THERAPEUTICS INC COM 15117B103 65,739 -7,339 -10.04 162 -38.64 0.0001
2017-08-14 2017-06-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 65,739 -7,339 162
2017-11-14 2017-03-31 13F/A-1 CELLDEX THERAPEUTICS INC COM 15117B103 73,078 -117,969 -61.75 264 -61.00 0.0001
2017-05-12 2017-03-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 73,078 -117,969 264
2017-02-14 2016-12-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 191,047 40,810 27.16 677 11.53 0.0004
2016-11-14 2016-09-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 150,237 -83,597 -35.75 607 -40.90 0.0004
2016-08-12 2016-06-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 233,834 165,813 243.77 1,027 299.61 0.0006
2016-05-12 2016-03-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 68,021 -187,483 -73.38 257 -93.58 0.0002
2016-02-16 2015-12-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 255,504 183,803 256.35 4,006 429.89 0.0026
2015-11-13 2015-09-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 71,701 -11,882 -14.22 756 -64.14 0.0005
2015-08-14 2015-06-30 13F CELLDEX THERAPEUTICS INC COM 15117B103 83,583 3,705 4.64 2,108 -5.30 0.0014
2015-05-14 2015-03-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 79,878 21,862 37.68 2,226 110.20 0.0015
2015-02-17 2014-12-31 13F CELLDEX THERAPEUTICS INC COM 15117B103 58,016 58,016 1,059 0.0007
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-11-10 2022-09-30 13F CELLDEX THERAPEUTICS INC COM NEW Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-08-10 2022-06-30 13F CELLDEX THERAPEUTICS INC COM NEW Call 40,000 1,078 n/a n/a n/a
2016-05-12 2016-03-31 13F CELLDEX THERAPEUTICS INC COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2016-02-16 2015-12-31 13F CELLDEX THERAPEUTICS INC COM Call 1,200 -7.69 19 35.71 n/a n/a n/a
2015-11-13 2015-09-30 13F CELLDEX THERAPEUTICS INC COM Call 1,300 -23.53 14 -67.44 n/a n/a n/a
2015-08-14 2015-06-30 13F CELLDEX THERAPEUTICS INC COM Call 1,700 13.33 43 2.38 n/a n/a n/a
2015-05-14 2015-03-31 13F CELLDEX THERAPEUTICS INC COM Call 1,500 -80.52 42 -70.21 n/a n/a n/a
2015-02-17 2014-12-31 13F CELLDEX THERAPEUTICS INC COM Call 7,700 141 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-08-14 2015-06-30 13F CELLDEX THERAPEUTICS INC COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F CELLDEX THERAPEUTICS INC COM Put 3,200 220.00 89 394.44 n/a n/a n/a
2015-02-17 2014-12-31 13F CELLDEX THERAPEUTICS INC COM Put 1,000 18 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.