IRIDIAN ASSET MANAGEMENT LLC/CT — 13F Holdings & Portfolio
CIK 1033427 · latest 13F-HR filed 2026-04-24
IRIDIAN ASSET MANAGEMENT LLC/CT manages $246.7M in 13F-reported U.S. long-equity assets across 44 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are HLF (9.68%), ACVA (8.59%), HGV (7.69%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 5 new positions, exited 6, added to 16, and trimmed 19.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$246.7M
Long-equity book
44
Distinct positions
2026-03-31
Filed 2026-04-24
+5 / −6 / ↑16 / ↓19
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- NEKTAR THERAPEUTICS$1.8M +447.9%
- ENERGIZER HLDGS INC$1.5M +77.8%
- ELEMENT SOLUTIONS INC$1.5M +22.2%
- NATIONAL ENERGY SERVICES REU$1.3M +33.7%
- POST HLDGS INC$1.2M +7.4%
Top Trims
- DIGITALBRIDGE GROUP INC-$5.5M -90.1%
- BALL CORP-$4.4M -68.1%
- CHARLES RIV LABS INTL INC-$3.6M -68.0%
- RENTOKIL INITIAL PLC-$3.1M -34.2%
- BILL HOLDINGS INC-$2.6M -25.5%
New Positions
- BELLRING BRANDS INC$3.6M
- AMRIZE LTD$698.0K
- ELICIO THERAPEUTICS INC$321.2K
- BRIACELL THERAPEUTICS CORP$272.4K
- BRIACELL THERAPEUTICS CORP$67.0K
Exited Positions
- AVADEL PHARMACEUTICALS PLC$5.3M
- CHART INDS INC$1.3M
- GRAYSCALE BITCOIN TRUST ETF$721.8K
- ISHARES TR$502.5K
- ALIGHT INC$425.6K
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | HERBALIFE LTD | HLF | G4412G101 | $23.9M | 9.68% | 1,621,618 | SH |
| 2 | ACV AUCTIONS INC | ACVA | 00091G104 | $21.2M | 8.59% | 5,000,509 | SH |
| 3 | HILTON GRAND VACATIONS INC | HGV | 43283X105 | $19.0M | 7.69% | 485,200 | SH |
| 4 | POST HLDGS INC | POST | 737446104 | $18.0M | 7.29% | 181,969 | SH |
| 5 | LITHIA MTRS INC | LAD | 536797103 | $16.4M | 6.64% | 65,587 | SH |
| 6 | PRECIGEN INC | PGEN | 74017N105 | $13.9M | 5.64% | 3,592,730 | SH |
| 7 | TRAVEL PLUS LEISURE CO | TNL | 894164102 | $13.6M | 5.52% | 196,953 | SH |
| 8 | AXSOME THERAPEUTICS INC. | AXSM | 05464T104 | $11.4M | 4.62% | 67,491 | SH |
| 9 | ELEMENT SOLUTIONS INC | ESI | 28618M106 | $8.1M | 3.27% | 236,342 | SH |
| 10 | BILL HOLDINGS INC | BILL | 090043100 | $7.6M | 3.09% | 198,745 | SH |
| 11 | KATAPULT HOLDINGS INC | KPLT | 485859201 | $6.3M | 2.57% | 897,117 | SH |
| 12 | ELEVANCE HEALTH INC FORMERLY | ELV | 036752103 | $6.3M | 2.57% | 21,625 | SH |
| 13 | RENTOKIL INITIAL PLC | RTO | 760125104 | $5.9M | 2.41% | 188,815 | SH |
| 14 | LPL FINL HLDGS INC | LPLA | 50212V100 | $5.9M | 2.38% | 19,518 | SH |
| 15 | ON SEMICONDUCTOR CORP | ON | 682189105 | $5.4M | 2.21% | 87,878 | SH |
| 16 | NATIONAL ENERGY SERVICES REU | NESR | G6375R107 | $5.0M | 2.04% | 234,476 | SH |
| 17 | FLEXTRONICS INTL LTD | FLEX | Y2573F102 | $4.8M | 1.94% | 73,216 | SH |
| 18 | CROWN HLDGS INC | CCK | 228368106 | $4.8M | 1.93% | 47,536 | SH |
| 19 | NUVECTIS PHARMA INC | NVCT | 67080T108 | $4.7M | 1.89% | 601,757 | SH |
| 20 | CLARIVATE PLC | CLVT | G21810109 | $4.5M | 1.83% | 1,787,943 | SH |
| 21 | BELLRING BRANDS INC | BRBR | 07831C103 | $3.6M | 1.45% | 222,945 | SH |
| 22 | GEN DIGITAL INC | GEN | 668771108 | $3.6M | 1.45% | 189,323 | SH |
| 23 | ENERGIZER HLDGS INC | ENR | 29272W109 | $3.4M | 1.37% | 205,761 | SH |
| 24 | BAKER HUGHES COMPANY | BKR | 05722G100 | $3.0M | 1.22% | 49,320 | SH |
| 25 | KKR & CO INC | KKR | 48251W104 | $2.9M | 1.18% | 31,363 | SH |
| 26 | SLB LIMITED | SLB | 806857108 | $2.7M | 1.10% | 52,950 | SH |
| 27 | TG THERAPEUTICS INC | TGTX | 88322Q108 | $2.5M | 1.01% | 75,289 | SH |
| 28 | INTERCONTINENTAL EXCHANGE IN | ICE | 45866F104 | $2.4M | 0.99% | 15,515 | SH |
| 29 | NEKTAR THERAPEUTICS | NKTR | 640268306 | $2.3M | 0.91% | 31,320 | SH |
| 30 | RESTAURANT BRANDS INTL INC | QSR | 76131D103 | $2.2M | 0.89% | 29,819 | SH |
| 31 | BALL CORP | BALL | 058498106 | $2.1M | 0.84% | 35,076 | SH |
| 32 | CHARLES RIV LABS INTL INC | CRL | 159864107 | $1.7M | 0.69% | 9,845 | SH |
| 33 | MOLINA HEALTHCARE INC | MOH | 60855R100 | $1.0M | 0.42% | 7,830 | SH |
| 34 | CLEAR SECURE INC | YOU | 18467V109 | $1.0M | 0.42% | 21,478 | SH |
| 35 | RH | RH | 74967X103 | $848.3K | 0.34% | 6,067 | SH |
| 36 | ACV AUCTIONS INC | ACVA | 00091G104 | $848.0K | 0.34% | 200,000 | SH |
| 37 | LABCORP HOLDINGS INC | LH | 504922105 | $754.3K | 0.31% | 2,827 | SH |
| 38 | ZILLOW GROUP INC | Z | 98954M200 | $746.5K | 0.30% | 18,040 | SH |
| 39 | AMRIZE LTD | AMRZ | H2927K103 | $698.0K | 0.28% | 12,459 | SH |
| 40 | DIGITALBRIDGE GROUP INC | DBRG | 25401T603 | $609.4K | 0.25% | 39,518 | SH |
| 41 | NUVECTIS PHARMA INC | NVCT | 67080T108 | $386.5K | 0.16% | 50,000 | SH |
| 42 | ELICIO THERAPEUTICS INC | ELTX | 28657F103 | $321.2K | 0.13% | 30,051 | SH |
| 43 | BRIACELL THERAPEUTICS CORP | BCTX | 107930307 | $272.4K | 0.11% | 65,000 | SH |
| 44 | BRIACELL THERAPEUTICS CORP | BCTXL | 107930125 | $67.0K | 0.03% | 65,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-04-24 | $246.7M | 44 | 0001033427-26-000004 |
| 2025-12-31 | 2026-01-23 | $271.6M | 46 | 0001033427-26-000003 |