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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 $291,054,769 across 41 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-07-29. Its ten largest share positions make up 67.2% of the portfolio.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001033427-26-000010

Period
2026-06-30
Reported value
$291M
Holdings
41
Top 10 weight
67.2%
New
2
Sold out
3

Stakes and trades reported after 2026-06-30

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
HLFadded+456,662$6.01M
POSTadded+42,924$3.79M
PGENadded+439,233$2.5M
NVCTadded+125,321$2.3M
LPLAadded+7,729$2.18M

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
AXSMreduced-19,567-$4.79M
ACVAreduced-622,788-$4.48M
FLEXreduced-19,749-$3.2M
ENRreduced-137,848-$2.96M
TGTXreduced-47,600-$2.62M

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, Q2 2026

Share positions as resolved from 13F-HR 0001033427-26-000010, largest first. % of portfolio is the value over $291,054,769, 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; 2024Q3: 1,062,081 shares; 2024Q4: 1,106,154 shares; 2025Q1: 1,967,332 shares; 2025Q2: 1,231,493 shares; 2025Q3: 1,880,851 shares; 2025Q4: 2,989,152 shares; 2026Q1: 5,200,509 shares; 2026Q2: 4,577,721 shares 4,577,721$32.9M11.31%-622,788Timeline
HLFHERBALIFE LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 2,228,193 shares; 2024Q4: 2,507,740 shares; 2025Q1: 2,775,430 shares; 2025Q2: 2,228,259 shares; 2025Q3: 2,449,155 shares; 2025Q4: 1,836,381 shares; 2026Q1: 1,621,618 shares; 2026Q2: 2,078,280 shares 2,078,280$27.3M9.39%+456,662Timeline
HGVHILTON GRAND VACATIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 311,673 shares; 2024Q4: 299,963 shares; 2025Q1: 289,601 shares; 2025Q2: 198,602 shares; 2025Q3: 274,055 shares; 2025Q4: 464,964 shares; 2026Q1: 485,200 shares; 2026Q2: 460,596 shares 460,596$24.1M8.29%-24,604Timeline
PGENPRECIGEN INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 3,775,960 shares; 2024Q4: 5,241,922 shares; 2025Q1: 4,585,809 shares; 2025Q2: 4,278,662 shares; 2025Q3: 3,666,946 shares; 2025Q4: 3,600,195 shares; 2026Q1: 3,592,730 shares; 2026Q2: 4,031,963 shares 4,031,963$23M7.9%+439,233Timeline
POSTPOST HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 171,188 shares; 2024Q4: 206,013 shares; 2025Q1: 173,674 shares; 2025Q2: 139,955 shares; 2025Q3: 119,081 shares; 2025Q4: 169,125 shares; 2026Q1: 181,969 shares; 2026Q2: 224,893 shares 224,893$19.8M6.82%+42,924Timeline
LADLITHIA MTRS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 65,641 shares; 2024Q4: 53,849 shares; 2025Q1: 61,424 shares; 2025Q2: 53,371 shares; 2025Q3: 47,298 shares; 2025Q4: 47,182 shares; 2026Q1: 65,587 shares; 2026Q2: 63,863 shares 63,863$18.6M6.37%-1,724Timeline
TNLTRAVEL PLUS LEISURE COQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 534,156 shares; 2024Q4: 503,893 shares; 2025Q1: 477,224 shares; 2025Q2: 438,650 shares; 2025Q3: 305,415 shares; 2025Q4: 209,844 shares; 2026Q1: 196,953 shares; 2026Q2: 196,202 shares 196,202$15M5.15%-751Timeline
NVCTNUVECTIS PHARMA INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 55,380 shares; 2024Q4: not reported; 2025Q1: 253,972 shares; 2025Q2: 372,717 shares; 2025Q3: 405,621 shares; 2025Q4: 586,320 shares; 2026Q1: 651,757 shares; 2026Q2: 777,078 shares 777,078$14.3M4.91%+125,321Timeline
AXSMAXSOME THERAPEUTICS INC.Quarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 126,803 shares; 2024Q4: 125,079 shares; 2025Q1: 106,312 shares; 2025Q2: 91,761 shares; 2025Q3: 83,553 shares; 2025Q4: 73,783 shares; 2026Q1: 67,491 shares; 2026Q2: 47,924 shares 47,924$11.7M4.03%-19,567Timeline
ESIELEMENT SOLUTIONS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 290,769 shares; 2024Q4: 258,845 shares; 2025Q1: 259,065 shares; 2025Q2: 210,724 shares; 2025Q3: 192,525 shares; 2025Q4: 264,211 shares; 2026Q1: 236,342 shares; 2026Q2: 184,702 shares 184,702$8.82M3.03%-51,640Timeline
FLEXFLEX LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 533,225 shares; 2024Q4: 146,884 shares; 2025Q1: 104,144 shares; 2025Q2: 100,290 shares; 2025Q3: 78,916 shares; 2025Q4: 69,932 shares; 2026Q1: 73,216 shares; 2026Q2: 53,467 shares 53,467$8.67M2.98%-19,749Timeline
LPLALPL FINL HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 82,834 shares; 2024Q4: 28,902 shares; 2025Q1: 20,901 shares; 2025Q2: 13,937 shares; 2025Q3: 13,847 shares; 2025Q4: 14,385 shares; 2026Q1: 19,518 shares; 2026Q2: 27,247 shares 27,247$7.67M2.64%+7,729Timeline
ONON SEMICONDUCTOR CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 90,709 shares; 2024Q4: 88,355 shares; 2025Q1: 105,460 shares; 2025Q2: 69,740 shares; 2025Q3: 62,854 shares; 2025Q4: 91,632 shares; 2026Q1: 87,878 shares; 2026Q2: 72,979 shares 72,979$6.9M2.37%-14,899Timeline
NESRNATIONAL ENERGY SERVICES REUQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: 153,836 shares; 2025Q1: 273,944 shares; 2025Q2: 224,765 shares; 2025Q3: 252,754 shares; 2025Q4: 240,383 shares; 2026Q1: 234,476 shares; 2026Q2: 227,266 shares 227,266$6.8M2.34%-7,210Timeline
BILLBILL HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 294,668 shares; 2024Q4: 53,705 shares; 2025Q1: 109,849 shares; 2025Q2: 144,427 shares; 2025Q3: 151,554 shares; 2025Q4: 187,404 shares; 2026Q1: 198,745 shares; 2026Q2: 187,831 shares 187,831$6.79M2.33%-10,914Timeline
ELVELEVANCE HEALTH INC FORMERLYQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 39,154 shares; 2024Q4: 60,197 shares; 2025Q1: 51,991 shares; 2025Q2: 46,622 shares; 2025Q3: 52,103 shares; 2025Q4: 25,074 shares; 2026Q1: 21,625 shares; 2026Q2: 14,989 shares 14,989$5.8M1.99%-6,636Timeline
KPLTKATAPULT HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 400,000 shares; 2024Q4: 438,000 shares; 2025Q1: 576,648 shares; 2025Q2: 564,844 shares; 2025Q3: 308,616 shares; 2025Q4: 920,000 shares; 2026Q1: 897,117 shares; 2026Q2: 872,856 shares 872,856$5.77M1.98%-24,261Timeline
CCKCROWN HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 195,849 shares; 2024Q4: 222,292 shares; 2025Q1: 197,782 shares; 2025Q2: 82,664 shares; 2025Q3: 56,650 shares; 2025Q4: 60,365 shares; 2026Q1: 47,536 shares; 2026Q2: 44,931 shares 44,931$5.02M1.73%-2,605Timeline
RTORENTOKIL INITIAL PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 719,795 shares; 2024Q4: 728,764 shares; 2025Q1: 828,361 shares; 2025Q2: 697,212 shares; 2025Q3: 614,609 shares; 2025Q4: 306,397 shares; 2026Q1: 188,815 shares; 2026Q2: 148,070 shares 148,070$4.24M1.46%-40,745Timeline
GENGEN DIGITAL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 482,450 shares; 2024Q4: 441,492 shares; 2025Q1: 413,578 shares; 2025Q2: 231,511 shares; 2025Q3: 193,957 shares; 2025Q4: 190,232 shares; 2026Q1: 189,323 shares; 2026Q2: 152,306 shares 152,306$3.79M1.3%-37,017Timeline
BRBRBELLRING BRANDS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 56,758 shares; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 222,945 shares; 2026Q2: 284,929 shares 284,929$3.69M1.27%+61,984Timeline
CLVTCLARIVATE PLCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 1,045,679 shares; 2024Q4: 1,120,550 shares; 2025Q1: 1,152,149 shares; 2025Q2: 905,076 shares; 2025Q3: 1,002,958 shares; 2025Q4: 1,528,410 shares; 2026Q1: 1,787,943 shares; 2026Q2: 1,634,309 shares 1,634,309$3.53M1.21%-153,634Timeline
AMRZAMRIZE LTDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 12,459 shares; 2026Q2: 51,501 shares 51,501$2.75M0.94%+39,042Timeline
KKRKKR & CO INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 27,084 shares; 2024Q4: 20,825 shares; 2025Q1: 20,015 shares; 2025Q2: 18,285 shares; 2025Q3: 16,405 shares; 2025Q4: 17,258 shares; 2026Q1: 31,363 shares; 2026Q2: 29,647 shares 29,647$2.72M0.93%-1,716Timeline
NKTRNEKTAR THERAPEUTICSQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 9,728 shares; 2026Q1: 31,320 shares; 2026Q2: 38,802 shares 38,802$2.71M0.93%+7,482Timeline
BKRBAKER HUGHES COMPANYQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 145,094 shares; 2024Q4: 78,958 shares; 2025Q1: 70,026 shares; 2025Q2: 73,826 shares; 2025Q3: 63,016 shares; 2025Q4: 57,686 shares; 2026Q1: 49,320 shares; 2026Q2: 46,580 shares 46,580$2.59M0.89%-2,740Timeline
ICEINTERCONTINENTAL EXCHANGE INQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 24,477 shares; 2024Q4: 22,364 shares; 2025Q1: 16,117 shares; 2025Q2: 11,493 shares; 2025Q3: 10,062 shares; 2025Q4: 16,166 shares; 2026Q1: 15,515 shares; 2026Q2: 16,981 shares 16,981$2.09M0.72%+1,466Timeline
BALLBALL CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: 22,971 shares; 2025Q2: 26,848 shares; 2025Q3: 46,624 shares; 2025Q4: 122,835 shares; 2026Q1: 35,076 shares; 2026Q2: 33,139 shares 33,139$2.07M0.71%-1,937Timeline
SLBSLB LIMITEDQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 60,916 shares; 2025Q4: 55,494 shares; 2026Q1: 52,950 shares; 2026Q2: 43,927 shares 43,927$2.04M0.7%-9,023Timeline
QSRRESTAURANT BRANDS INTL INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 61,838 shares; 2024Q4: 107,983 shares; 2025Q1: 115,870 shares; 2025Q2: 46,615 shares; 2025Q3: 47,389 shares; 2025Q4: 36,710 shares; 2026Q1: 29,819 shares; 2026Q2: 23,890 shares 23,890$1.73M0.6%-5,929Timeline
TGTXTG THERAPEUTICS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 47,532 shares; 2024Q4: 47,532 shares; 2025Q1: 47,532 shares; 2025Q2: 47,532 shares; 2025Q3: 75,289 shares; 2025Q4: 75,289 shares; 2026Q1: 75,289 shares; 2026Q2: 27,689 shares 27,689$1.52M0.52%-47,600Timeline
ENRENERGIZER HLDGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 95,539 shares; 2026Q1: 205,761 shares; 2026Q2: 67,913 shares 67,913$1.46M0.5%-137,848Timeline
ABVXABIVAX SAQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 9,165 shares 9,165$1.22M0.42%newTimeline
RHRHQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: 2,995 shares; 2026Q1: 6,067 shares; 2026Q2: 5,714 shares 5,714$941K0.32%-353Timeline
FLSFLOWSERVE CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: not reported; 2026Q2: 9,348 shares 9,348$693K0.24%newTimeline
DBRGDIGITALBRIDGE GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 387,827 shares; 2024Q4: 365,504 shares; 2025Q1: 393,723 shares; 2025Q2: 351,017 shares; 2025Q3: 399,393 shares; 2025Q4: 399,771 shares; 2026Q1: 39,518 shares; 2026Q2: 39,518 shares 39,518$624K0.21%0Timeline
ZZILLOW GROUP INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 6,286 shares; 2024Q4: 6,166 shares; 2025Q1: 5,816 shares; 2025Q2: 4,571 shares; 2025Q3: 3,952 shares; 2025Q4: 3,682 shares; 2026Q1: 18,040 shares; 2026Q2: 17,013 shares 17,013$536K0.18%-1,027Timeline
LHLABCORP HOLDINGS INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 22,216 shares; 2024Q4: 20,495 shares; 2025Q1: 4,223 shares; 2025Q2: 3,907 shares; 2025Q3: 3,993 shares; 2025Q4: 3,644 shares; 2026Q1: 2,827 shares; 2026Q2: 1,771 shares 1,771$496K0.17%-1,056Timeline
MOHMOLINA HEALTHCARE INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: 2,522 shares; 2024Q4: 2,522 shares; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: 9,557 shares; 2025Q4: 8,200 shares; 2026Q1: 7,830 shares; 2026Q2: 1,542 shares 1,542$353K0.12%-6,288Timeline
BCTXBRIACELL THERAPEUTICS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 65,000 shares; 2026Q2: 65,000 shares 65,000$211K0.07%0Timeline
BCTXLBRIACELL THERAPEUTICS CORPQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not reported; 2024Q4: not reported; 2025Q1: not reported; 2025Q2: not reported; 2025Q3: not reported; 2025Q4: not reported; 2026Q1: 65,000 shares; 2026Q2: 65,000 shares 65,000$57.9K0.02%0Timeline

Sold out in Q2 2026

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

SecurityShares beforeValue beforeType
CRLCHARLES RIV LABS INTL INC9,845$1.7Mshares
YOUCLEAR SECURE INC21,478$1.04Mshares
ELTXELICIO THERAPEUTICS INC30,051$321Kshares

How Q2 2026 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 0001033427-26-000010 base2026-07-29acceptance time not in the bulk data set