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IRIDIAN ASSET MANAGEMENT LLC/CT

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13F filer, CIK 1033427, WESTPORT, CT

IRIDIAN ASSET MANAGEMENT LLC/CT reported $318,851,502 across 45 holdings for the quarter ended 2025-03-31, in a 13F-HR filed 2025-04-30. Its ten largest share positions make up 61.04% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001033427-25-000003

Period
2025-03-31
Reported value
$319M
Holdings
45
Top 10 weight
61.04%
New
3
Sold out
6

Stakes and trades reported after 2025-03-31

13D, 13G and Form 4 filings by this filer's group, dated after the 13F period, on securities the quarter does not hold as shares.

  • KATAPULT HOLDINGS INC: 13G/A 919,498 shares, 1.1% of the class, 13G/A filed 2026-10-01, 0001033427-26-000012
    Accepted , ingested

Largest buys vs the previous quarter

SecurityShares changeApprox. value
ACVAadded+861,178$12.1M
BILLadded+56,144$2.58M
NVCTnew+253,972$2.48M
HLFadded+267,690$2.31M
RTOadded+99,597$2.28M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Largest sells vs the previous quarter

SecurityShares changeApprox. value
SPYexited-60,000-$35.2M
BEACON ROOFING SUPPLY INCreduced-57,458-$7.11M
IWRexited-72,500-$6.41M
LHreduced-16,272-$3.79M
POSTreduced-32,339-$3.76M

Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.

Holdings, Q1 2025

Share positions as resolved from 13F-HR 0001033427-25-000003, largest first. % of portfolio is the value over $318,851,502, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
ACVAACV AUCTIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,062,081 shares; 2024Q4: 1,106,154 shares; 2025Q1: 1,967,332 shares 1,967,332$27.7M8.69%+861,178Timeline
HLFHERBALIFE LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 2,228,193 shares; 2024Q4: 2,507,740 shares; 2025Q1: 2,775,430 shares 2,775,430$24M7.51%+267,690Timeline
ELVELEVANCE HEALTH INC FORMERLYQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 39,154 shares; 2024Q4: 60,197 shares; 2025Q1: 51,991 shares 51,991$22.6M7.09%-8,206Timeline
TNLTRAVEL PLUS LEISURE COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 534,156 shares; 2024Q4: 503,893 shares; 2025Q1: 477,224 shares 477,224$22.1M6.93%-26,669Timeline
POSTPOST HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 171,188 shares; 2024Q4: 206,013 shares; 2025Q1: 173,674 shares 173,674$20.2M6.34%-32,339Timeline
RTORENTOKIL INITIAL PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 719,795 shares; 2024Q4: 728,764 shares; 2025Q1: 828,361 shares 828,361$19M5.95%+99,597Timeline
LADLITHIA MTRS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 65,641 shares; 2024Q4: 53,849 shares; 2025Q1: 61,424 shares 61,424$18M5.65%+7,575Timeline
CCKCROWN HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 195,849 shares; 2024Q4: 222,292 shares; 2025Q1: 197,782 shares 197,782$17.7M5.54%-24,510Timeline
AXSMAXSOME THERAPEUTICS INC.Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 126,803 shares; 2024Q4: 125,079 shares; 2025Q1: 106,312 shares 106,312$12.4M3.89%-18,767Timeline
GENGEN DIGITAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 482,450 shares; 2024Q4: 441,492 shares; 2025Q1: 413,578 shares 413,578$11M3.44%-27,914Timeline
HGVHILTON GRAND VACATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 311,673 shares; 2024Q4: 299,963 shares; 2025Q1: 289,601 shares 289,601$10.8M3.4%-10,362Timeline
CRLCHARLES RIV LABS INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 55,043 shares; 2024Q4: 50,965 shares; 2025Q1: 60,419 shares 60,419$9.09M2.85%+9,454Timeline
QSRRESTAURANT BRANDS INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 61,838 shares; 2024Q4: 107,983 shares; 2025Q1: 115,870 shares 115,870$7.72M2.42%+7,887Timeline
LNWOLIGHT & WONDER INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 51,571 shares; 2024Q4: 100,192 shares; 2025Q1: 83,351 shares 83,351$7.22M2.26%-16,841Timeline
LPLALPL FINL HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 82,834 shares; 2024Q4: 28,902 shares; 2025Q1: 20,901 shares 20,901$6.84M2.14%-8,001Timeline
PGENPRECIGEN INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 3,775,960 shares; 2024Q4: 5,241,922 shares; 2025Q1: 4,585,809 shares 4,585,809$6.83M2.14%-656,113Timeline
WBDWARNER BROS DISCOVERY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 189,715 shares; 2024Q4: 448,784 shares; 2025Q1: 572,923 shares 572,923$6.15M1.93%+124,139Timeline
KPLTKATAPULT HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 400,000 shares; 2024Q4: 438,000 shares; 2025Q1: 576,648 shares 576,648$5.9M1.85%+138,648Timeline
ESIELEMENT SOLUTIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 290,769 shares; 2024Q4: 258,845 shares; 2025Q1: 259,065 shares 259,065$5.86M1.84%+220Timeline
BILLBILL HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 294,668 shares; 2024Q4: 53,705 shares; 2025Q1: 109,849 shares 109,849$5.04M1.58%+56,144Timeline
CLVTCLARIVATE PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 1,045,679 shares; 2024Q4: 1,120,550 shares; 2025Q1: 1,152,149 shares 1,152,149$4.53M1.42%+31,599Timeline
GTLSCHART INDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 42,957 shares; 2024Q4: 35,890 shares; 2025Q1: 30,468 shares 30,468$4.4M1.38%-5,422Timeline
YOUCLEAR SECURE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 164,572 shares; 2024Q4: 180,175 shares; 2025Q1: 167,737 shares 167,737$4.35M1.36%-12,438Timeline
ONON SEMICONDUCTOR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 90,709 shares; 2024Q4: 88,355 shares; 2025Q1: 105,460 shares 105,460$4.29M1.35%+17,105Timeline
CHAMPIONX CORPORATIONCHAMPIONX CORPORATIONQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 127,943 shares; 2024Q4: 124,811 shares; 2025Q1: 120,605 shares 120,605$3.59M1.13%-4,206
DBRGDIGITALBRIDGE GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 387,827 shares; 2024Q4: 365,504 shares; 2025Q1: 393,723 shares 393,723$3.47M1.09%+28,219Timeline
FLEXFLEX LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 533,225 shares; 2024Q4: 146,884 shares; 2025Q1: 104,144 shares 104,144$3.45M1.08%-42,740Timeline
BKRBAKER HUGHES COMPANYQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 145,094 shares; 2024Q4: 78,958 shares; 2025Q1: 70,026 shares 70,026$3.08M0.97%-8,932Timeline
WOLFSPEED INCWOLFSPEED INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 521,158 shares; 2024Q4: 816,183 shares; 2025Q1: 913,529 shares 913,529$2.8M0.88%+97,346
ICEINTERCONTINENTAL EXCHANGE INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 24,477 shares; 2024Q4: 22,364 shares; 2025Q1: 16,117 shares 16,117$2.78M0.87%-6,247Timeline
NVCTNUVECTIS PHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 55,380 shares; 2024Q4: not reported; 2025Q1: 253,972 shares 253,972$2.48M0.78%newTimeline
KKRKKR & CO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 27,084 shares; 2024Q4: 20,825 shares; 2025Q1: 20,015 shares 20,015$2.31M0.73%-810Timeline
NESRNATIONAL ENERGY SERVICES REUQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 153,836 shares; 2025Q1: 273,944 shares 273,944$2.02M0.63%+120,108Timeline
AVADEL PHARMACEUTICALSAVADEL PHARMACEUTICALSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 167,700 shares; 2024Q4: 169,586 shares; 2025Q1: 249,586 shares 249,586$1.95M0.61%+80,000
TGTXTG THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 47,532 shares; 2024Q4: 47,532 shares; 2025Q1: 47,532 shares 47,532$1.87M0.59%0Timeline
BALLBALL CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 22,971 shares 22,971$1.2M0.38%newTimeline
LHLABCORP HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 22,216 shares; 2024Q4: 20,495 shares; 2025Q1: 4,223 shares 4,223$983K0.31%-16,272Timeline
BEBLOOM ENERGY CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 62,951 shares; 2024Q4: 57,597 shares; 2025Q1: 39,110 shares 39,110$769K0.24%-18,487Timeline
GBTCGRAYSCALE BITCOIN TRUST ETFQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 20,300 shares; 2024Q4: 11,836 shares; 2025Q1: 10,559 shares 10,559$688K0.22%-1,277Timeline
ZZILLOW GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 6,286 shares; 2024Q4: 6,166 shares; 2025Q1: 5,816 shares 5,816$399K0.13%-350Timeline
CLNECLEAN ENERGY FUELS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 146,377 shares; 2024Q4: 146,377 shares; 2025Q1: 247,468 shares 247,468$384K0.12%+101,091Timeline
FTREFORTREA HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 52,807 shares; 2024Q4: 47,924 shares; 2025Q1: 49,272 shares 49,272$372K0.12%+1,348Timeline
BEACON ROOFING SUPPLY INCBEACON ROOFING SUPPLY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: 83,713 shares; 2024Q4: 59,658 shares; 2025Q1: 2,200 shares 2,200$272K0.09%-57,458
IBIOIBIO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 58,205 shares 58,205$234K0.07%newTimeline
NATIONAL ENERGY SERVICES REUNATIONAL ENERGY SERVICES REUQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q2: restricted; 2023Q3: restricted; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not reported; 2024Q4: 251,071 shares; 2025Q1: 251,071 shares 251,071$87.9K0.03%0

Sold out in Q1 2025

Positions in the previous quarter's report that this quarter's report no longer lists.

SecurityShares beforeValue beforeType
SPYSTATE STR SPDR S&P 500 ETF T60,000$35.2Mshares
IWRISHARES TR72,500$6.41Mshares
TECKTECK RESOURCES LTD26,394$1.07Mshares
MOHMOLINA HEALTHCARE INC2,522$734Kshares
MRCYMERCURY SYS INC9,357$393Kshares
ALTUS POWER INCALTUS POWER INC12,653$51.5Kshares

How Q1 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0001033427-25-000003 base2025-04-30acceptance time not in the bulk data set