CIK: 0001033427
Total reported value
$246.7M
Reporting period: 2026-03-31 · Number of holdings: 44
IRIDIAN ASSET MANAGEMENT LLC/CT disclosed 44 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $246.7M and a quarterly turnover rate of 24.0%.
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Iridian Asset Management Llc/ct's disclosed holdings carry a Herfindahl concentration index of 0.050 — mathematically equivalent to about 20 equally-sized positions, well below its 44 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 1.06), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 2.5 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 5% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim DBRG
-90.1% -$5.5M
Trim BALL
-71.4% -$4.4M
Trim CRL
-62.9% -$3.6M
Add POST
+7.6% $1.2M
Add HLF
-11.7% $199.3K
Trim RTO
-38.4% -$3.1M
Showing top 42 holdings (of 44 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | HLF | Herbalife Ltd. | Stock-Other | 9.68% | +0.97% | -11.69% | |
| 2 | ACVA | Acv Auctions Inc-a | Stock-Other | 8.94% | +0.11% | +73.98% | |
| 3 | HGV | Hilton Grand Vacations INC | Stock-Other | 7.69% | +0.03% | +4.35% | |
| 4 | POST | Post Holdings INC | Stock-Consumer Staples | 7.29% | +1.12% | +7.59% | |
| 5 | LAD | Lithia Motors INC | Stock-Consumer Disc | 6.64% | +0.87% | +39.01% | |
| 6 | PGEN | Precigen INC | Stock-Other | 5.64% | +0.10% | -0.21% | |
| 7 | TNL | Travel + Leisure Co | Stock-Consumer Disc | 5.52% | +0.07% | -6.14% | |
| 8 | AXSM | Axsome Therapeutics INC | Stock-Healthcare | 4.62% | -0.34% | -8.53% | |
| 9 | ESI | Element Solutions INC | Stock-Materials | 3.27% | +0.84% | -10.55% | |
| 10 | BILL | Bill Holdings INC | Stock-Tech | 3.09% | -0.67% | +6.05% | |
| 11 | KPLT | Katapult Holdings INC | Stock-Other | 2.57% | +0.38% | -2.49% | |
| 12 | ELV | Elevance Health INC | Stock-Healthcare | 2.57% | -0.67% | -13.76% | |
| 13 | RTO | Rentokil Initial Plc-sp Adr | Stock-Other | 2.41% | -0.91% | -38.38% | |
| 14 | LPLA | Lpl Financial Holdings INC | Stock-Financials | 2.38% | +0.49% | +35.68% | |
| 15 | ON | On Semiconductor | Stock-Tech | 2.21% | +0.38% | -4.10% | |
| 16 | NVCT | Nuvectis Pharma INC | Stock-Other | 2.04% | +0.41% | +11.16% | |
| 17 | ✓ | National Energy Services Reu | Stock-Other | 2.04% | +0.65% | -2.46% | |
| 18 | FLEX | Flex Ltd. | Stock-Tech | 1.94% | +0.38% | +4.70% | |
| 19 | CCK | Crown Holdings INC | Stock-Consumer Disc | 1.93% | -0.36% | -21.25% | |
| 20 | CLVT | Clarivate Plc | Stock-Other | 1.83% | -0.05% | +16.98% | |
| 21 | BRBR | Bellring Brands INC | Stock-Consumer Staples | 1.45% | +1.45% | NEW | |
| 22 | GEN | Gen Digital INC | Stock-Tech | 1.45% | -0.45% | -0.48% | |
| 23 | ENR | Energizer Holdings INC | Stock-Other | 1.37% | +0.67% | +115.37% | |
| 24 | BKR | Baker Hughes Co | Stock-Energy | 1.22% | +0.25% | -14.50% | |
| 25 | KKR | Kkr & Co INC | Stock-Financials | 1.18% | +0.37% | +81.73% | |
| 26 | SLB | Slb LTD | Stock-Energy | 1.10% | +0.32% | -4.58% | |
| 27 | TGTX | Tg Therapeutics INC | Stock-Healthcare | 1.01% | +0.18% | — | |
| 28 | ICE | Intercontinental Exchange In | Stock-Financials | 0.99% | +0.03% | -4.03% | |
| 29 | NKTR | Nektar Therapeutics | Stock-Other | 0.91% | +0.76% | +221.96% | |
| 30 | QSR | Restaurant Brands Intern | Stock-Consumer Disc | 0.89% | -0.03% | -18.77% | |
| 31 | BALL | Ball CORP | Stock-Consumer Disc | 0.84% | -1.56% | -71.44% | |
| 32 | CRL | Charles River Laboratories | Stock-Healthcare | 0.69% | -1.26% | -62.94% | |
| 33 | MOH | Molina Healthcare INC | Stock-Healthcare | 0.42% | -0.10% | -4.51% | |
| 34 | YOU | Clear Secure INC -class A | Stock-Tech | 0.42% | -0.15% | -51.08% | |
| 35 | RH | Rh | Stock-Consumer Disc | 0.34% | +0.14% | +102.57% | |
| 36 | LH | Labcorp Holdings INC | Stock-Healthcare | 0.31% | -0.03% | -22.42% | |
| 37 | Z | Zillow Group INC - C | Stock-Comm Services | 0.30% | +0.21% | +389.95% | |
| 38 | AMRZ | Amrize Ltd | Stock-Materials | 0.28% | +0.28% | NEW | |
| 39 | DBRG | Digitalbridge Group INC | Stock-Financials | 0.25% | -2.01% | -90.11% | |
| 40 | ELTX | Elicio Therapeutics INC | Stock-Other | 0.13% | +0.13% | NEW | |
| 41 | BCTX | Briacell Therapeutics CORP | Stock-Other | 0.11% | +0.11% | NEW | |
| 42 | BCTXL | Briacell Therapeutics CORP | Stock-Other | 0.03% | +0.03% | NEW |
Performance for Q3 2026
+7.7%
Performance Last 4 Quarters
+27.6%
Based on 76% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 44 | $246.7M | 24 | |
| 2025-12-31 | 46 | $271.6M | 35 | |
| 2025-09-30 | 43 | $254.1M | 41 | |
| 2025-06-30 | 42 | $288.7M | 0 | |
| 2025-03-31 | 48 | $318.9M | 100 | |
| 2024-12-31 | 49 | $375.9M | 0 | |
| 2024-09-30 | 54 | $467.1M | 0 | |
| 2024-06-30 | 52 | $443.1M | 0 | |
| 2024-03-31 | 55 | $509.6M | 0 | |
| 2023-12-31 | 54 | $551.3M | 0 | |
| 2023-09-30 | 51 | $493.8M | 0 | |
| 2023-06-30 | 52 | $1.1B | 0 | |
| 2023-03-31 | 48 | $1.2B | 0 | |
| 2022-12-31 | 55 | $1.0B | 0 | |
| 2022-09-30 | 59 | $1.0B | 0 | |
| 2022-06-30 | 58 | $1.2B | 0 | |
| 2022-03-31 | 55 | $1.4B | 0 | |
| 2021-12-31 | 76 | $1.6B | 0 | |
| 2021-09-30 | 95 | $3.3B | 0 | |
| 2021-06-30 | 113 | $5.7B | 100 | |
| 2021-03-31 | 119 | $5.9B | 66 | |
| 2020-12-31 | 90 | $5.5B | 51 | |
| 2020-09-30 | 79 | $4.6B | 22 | |
| 2020-06-30 | 73 | $4.5B | 27 | |
| 2020-03-31 | 78 | $4.1B | 44 | |
| 2019-12-31 | 77 | $6.1B | 27 | |
| 2019-09-30 | 81 | $6.4B | 26 | |
| 2019-06-30 | 75 | $6.9B | 32 | |
| 2019-03-31 | 73 | $7.9B | 29 | |
| 2018-12-31 | 70 | $7.5B | 44 | |
| 2018-09-30 | 73 | $10.0B | 49 | |
| 2018-06-30 | 75 | $10.8B | 48 | |
| 2018-03-31 | 86 | $11.2B | 33 | |
| 2017-12-31 | 74 | $11.9B | 28 | |
| 2017-09-30 | 77 | $11.7B | 24 | |
| 2017-06-30 | 81 | $11.3B | 37 | |
| 2017-03-31 | 82 | $11.1B | 55 | |
| 2016-12-31 | 83 | $10.8B | 42 | |
| 2016-09-30 | 78 | $11.4B | 38 | |
| 2016-06-30 | 69 | $10.8B | 47 | |
| 2016-03-31 | 64 | $11.8B | 36 | |
| 2015-12-31 | 66 | $12.2B | 33 | |
| 2015-09-30 | 98 | $11.8B | 26 | |
| 2015-06-30 | 110 | $12.7B | 23 | |
| 2015-03-31 | 81 | $11.9B | 20 | |
| 2014-12-31 | 79 | $10.8B | 29 | |
| 2014-09-30 | 107 | $9.7B | 33 | |
| 2014-06-30 | 110 | $9.8B | 21 | |
| 2014-03-31 | 126 | $8.8B | 17 | |
| 2013-12-31 | 130 | $8.4B | 33 | |
| 2013-09-30 | 134 | $7.5B | 42 | |
| 2013-06-30 | 133 | $7.9B | 0 |
Iridian Asset Management Llc/ct's most significant position changes for 2026-03-31: Sold out: Avadel Pharmaceu; New buy: Bellring Brands INC (BRBR); Sold out: Chart Industries INC (GTLS); Sold out: Grayscale Bitcoin Trust ETF (GBTC); New buy: Amrize Ltd (AMRZ).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | POST | Post Holdings INC | +1.1% | +7.59% | Add |
| 2 | HLF | Herbalife Ltd. | +1% | -11.69% | Trim |
| 3 | LAD | Lithia Motors INC | +0.9% | +39.01% | Add |
| 4 | ESI | Element Solutions INC | +0.8% | -10.55% | Trim |
| 5 | NKTR | Nektar Therapeutics | +0.8% | +221.96% | Add |
| 6 | ENR | Energizer Holdings INC | +0.7% | +115.37% | Add |
| 7 | ✓ | National Energy Services Reu | +0.7% | -2.46% | Trim |
| 8 | LPLA | Lpl Financial Holdings INC | +0.5% | +35.68% | Add |
| 9 | NVCT | Nuvectis Pharma INC | +0.4% | +11.16% | Add |
| 10 | FLEX | Flex Ltd. | +0.4% | +4.70% | Add |
| 11 | ON | On Semiconductor | +0.4% | -4.10% | Trim |
| 12 | KPLT | Katapult Holdings INC | +0.4% | -2.49% | Trim |
| 13 | KKR | Kkr & Co INC | +0.4% | +81.73% | Add |
| 14 | SLB | Slb LTD | +0.3% | -4.58% | Trim |
| 15 | BKR | Baker Hughes Co | +0.3% | -14.50% | Trim |
| 16 | Z | Zillow Group INC - C | +0.2% | +389.95% | Add |
| 17 | TGTX | Tg Therapeutics INC | +0.2% | — | Unchanged |
| 18 | RH | Rh | +0.1% | +102.57% | Add |
| 19 | ACVA | Acv Auctions Inc-a | +0.1% | +73.98% | Add |
| 20 | PGEN | Precigen INC | +0.1% | -0.21% | Trim |
| 21 | TNL | Travel + Leisure Co | +0.1% | -6.14% | Trim |
| 22 | HGV | Hilton Grand Vacations INC | 0% | +4.35% | Add |
| 23 | ICE | Intercontinental Exchange In | 0% | -4.03% | Trim |
| 24 | QSR | Restaurant Brands Intern | 0% | -18.77% | Trim |
| 25 | LH | Labcorp Holdings INC | 0% | -22.42% | Trim |
| 26 | CLVT | Clarivate Plc | -0.1% | +16.98% | Add |
| 27 | MOH | Molina Healthcare INC | -0.1% | -4.51% | Trim |
| 28 | YOU | Clear Secure INC -class A | -0.2% | -51.08% | Trim |
| 29 | AXSM | Axsome Therapeutics INC | -0.3% | -8.53% | Trim |
| 30 | CCK | Crown Holdings INC | -0.4% | -21.25% | Trim |
| 31 | GEN | Gen Digital INC | -0.5% | -0.48% | Trim |
| 32 | BILL | Bill Holdings INC | -0.7% | +6.05% | Add |
| 33 | ELV | Elevance Health INC | -0.7% | -13.76% | Trim |
| 34 | RTO | Rentokil Initial Plc-sp Adr | -0.9% | -38.38% | Trim |
| 35 | CRL | Charles River Laboratories | -1.3% | -62.94% | Trim |
| 36 | BALL | Ball CORP | -1.6% | -71.44% | Trim |
| 37 | DBRG | Digitalbridge Group INC | -2% | -90.11% | Trim |
| 38 | ✓ | Avadel Pharmaceu | — | EXIT | Sold out |
| 39 | BRBR | Bellring Brands INC | — | NEW | New buy |
| 40 | GTLS | Chart Industries INC | — | EXIT | Sold out |
| 41 | GBTC | Grayscale Bitcoin Trust ETF | — | EXIT | Sold out |
| 42 | AMRZ | Amrize Ltd | — | NEW | New buy |
| 43 | IWR | Ishares Russell Mid-cap ETF | — | EXIT | Sold out |
| 44 | ALIT | Alight INC - Class A | — | EXIT | Sold out |
| 45 | ELTX | Elicio Therapeutics INC | — | NEW | New buy |
| 46 | CLNE | Clean Energy Fuels CORP | — | EXIT | Sold out |
| 47 | BCTX | Briacell Therapeutics CORP | — | NEW | New buy |
| 48 | BCTXL | Briacell Therapeutics CORP | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-04-24 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-01-23 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-10-24 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-30 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-01-28 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-10-25 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-07-26 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-05-01 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-01-26 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-10-30 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-08-09 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-28 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-01-31 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-11-07 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-07-29 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-05-02 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-02-10 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-11-10 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-08-11 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-05-11 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-02-08 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-11-02 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-08-10 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-05-11 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-02-03 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-11-06 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-31 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-05-06 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-02-07 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-11-09 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-08-01 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-05-10 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-02-01 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-08 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-07 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-05-09 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-02-03 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-11-09 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-08-09 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-10 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-02-05 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-11-04 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-08-12 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-05-08 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-12 | Amendment | View on EDGAR |
| 2014-12-31 | 2015-02-10 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-07 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-11 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-06 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-06 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-11-12 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-08 | 13F-HR | View on EDGAR |
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