CIK: 0001033427
Total reported value
$274.9M
Reporting period: 2026-09-30 · Number of holdings: 44
IRIDIAN ASSET MANAGEMENT LLC/CT disclosed 44 holdings in its latest 13F filing for the period ending 2026-09-30, with total reported value of $274.9M and a quarterly turnover rate of 17.7%.
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Iridian Asset Management Llc/ct's disclosed holdings carry a Herfindahl concentration index of 0.059 — mathematically equivalent to about 17 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 vary widely across the portfolio (a coefficient of variation of 1.20), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 2.2 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 45% 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.
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Add PGEN
-24.0% $3.3M
Trim LAD
-26.7% -$4.9M
Add NVCT
+2.1% $2.5M
Add NKTR
+144.1% $3.0M
Trim AXSM
-5.8% -$3.4M
Trim FLEX
-2.7% -$2.9M
Showing top 41 holdings (of 44 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ACVA | Acv Auctions Inc-a | Stock-Other | 11.66% | +0.35% | -32.89% | |
| 2 | PGEN | Precigen Inc | Stock-Other | 9.54% | +1.64% | -23.99% | |
| 3 | HLF | Herbalife Ltd. | Stock-Other | 9.09% | -0.30% | -0.91% | |
| 4 | HGV | Hilton Grand Vacations Inc | Stock-Other | 8.97% | +0.68% | +54.51% | |
| 5 | POST | Post Holdings Inc | Stock-Consumer Staples | 7.12% | +0.30% | +19.46% | |
| 6 | NVCT | Nuvectis Pharma Inc | Stock-Other | 6.09% | +1.18% | +2.08% | |
| 7 | LAD | Lithia Motors Inc | Stock-Consumer Disc | 4.97% | -1.40% | -26.72% | |
| 8 | TNL | Travel + Leisure Co | Stock-Consumer Disc | 4.46% | -0.69% | +0.95% | |
| 9 | AXSM | Axsome Therapeutics Inc | Stock-Healthcare | 3.03% | -1.00% | -5.83% | |
| 10 | ESI | Element Solutions Inc | Stock-Materials | 2.96% | -0.07% | +21.31% | |
| 11 | LPLA | Lpl Financial Holdings Inc | Stock-Financials | 2.61% | -0.03% | -13.99% | |
| 12 | ON | On Semiconductor | Stock-Tech | 2.46% | +0.09% | +20.77% | |
| 13 | NKTR | Nektar Therapeutics | Stock-Other | 2.09% | +1.16% | +144.05% | |
| 14 | FLEX | Flex Ltd. | Stock-Tech | 2.08% | -0.90% | -2.73% | |
| 15 | BILL | Bill Holdings Inc | Stock-Tech | 1.92% | -0.41% | -33.98% | |
| 16 | CCK | Crown Holdings Inc | Stock-Consumer Disc | 1.73% | — | +0.62% | |
| 17 | ✓ | National Energy Services Reu | Stock-Other | 1.70% | -0.64% | -19.18% | |
| 18 | RTO | Rentokil Initial Plc-sp Adr | Stock-Other | 1.64% | +0.18% | +54.15% | |
| 19 | KPLT | Katapult Holdings Inc | Stock-Other | 1.46% | -0.52% | +5.34% | |
| 20 | ELV | Elevance Health Inc | Stock-Healthcare | 1.45% | -0.54% | -31.60% | |
| 21 | BRBR | Bellring Brands Inc | Stock-Consumer Staples | 1.24% | -0.03% | +56.01% | |
| 22 | BALL | Ball CORP | Stock-Consumer Disc | 0.97% | +0.26% | +44.13% | |
| 23 | CLVT | Clarivate Plc | Stock-Other | 0.90% | -0.31% | -9.41% | |
| 24 | KKR | Kkr & Co Inc | Stock-Financials | 0.89% | -0.04% | -9.34% | |
| 25 | ICE | Intercontinental Exchange In | Stock-Financials | 0.85% | +0.13% | -9.54% | |
| 26 | BKR | Baker Hughes Co | Stock-Energy | 0.84% | -0.05% | -9.36% | |
| 27 | GEN | Gen Digital Inc | Stock-Tech | 0.84% | -0.46% | -31.24% | |
| 28 | XYL | Xylem Inc | Stock-Industrials | 0.76% | +0.76% | NEW | |
| 29 | FLS | Flowserve CORP | Stock-Industrials | 0.76% | +0.52% | +203.84% | |
| 30 | AMRZ | Amrize Ltd | Stock-Materials | 0.64% | -0.30% | -9.27% | |
| 31 | SLB | Slb LTD | Stock-Energy | 0.63% | -0.07% | -18.81% | |
| 32 | YOU | Clear Secure Inc -class A | Stock-Tech | 0.62% | +0.62% | NEW | |
| 33 | ABVX | Abivax Sa-adr | Stock-Other | 0.61% | +0.19% | +85.54% | |
| 34 | QSR | Restaurant Brands Intern | Stock-Consumer Disc | 0.57% | -0.03% | -8.36% | |
| 35 | TGTX | Tg Therapeutics Inc | Stock-Healthcare | 0.56% | +0.04% | — | |
| 36 | ENR | Energizer Holdings Inc | Stock-Other | 0.48% | -0.02% | -9.12% | |
| 37 | INVA | Innoviva Inc | Stock-Other | 0.31% | +0.31% | NEW | |
| 38 | RH | Rh | Stock-Consumer Disc | 0.22% | -0.10% | -13.97% | |
| 39 | Z | Zillow Group Inc - C | Stock-Comm Services | 0.15% | -0.03% | -9.34% | |
| 40 | BCTX | Briacell Therapeutics CORP | Stock-Other | 0.10% | +0.03% | — | |
| 41 | BCTXL | Briacell Therapeutics CORP | Stock-Other | 0.03% | +0.01% | — |
Performance for Q4 2026
-2.7%
Performance Last 4 Quarters
+23.5%
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q3 | 44 | $274.9M | 18 | ||
| 2026 Q2 | 45 | $291.1M | 27 | ||
| 2026 Q1 | 44 | $246.7M | 24 | ||
| 2025 Q4 | 46 | $271.6M | 35 | ||
| 2025 Q3 | 43 | $254.1M | 41 | ||
| 2025 Q2 | 42 | $288.7M | 0 | ||
| 2025 Q1 | 48 | $318.9M | 100 | ||
| 2024 Q4 | 49 | $375.9M | 0 | ||
| 2024 Q3 | 54 | $467.1M | 0 | ||
| 2024 Q2 | 52 | $443.1M | 0 | ||
| 2024 Q1 | 55 | $509.6M | 0 | ||
| 2023 Q4 | 54 | $551.3M | 0 | ||
| 2023 Q3 | 51 | $493.8M | 0 | ||
| 2023 Q2 | 52 | $1.1B | 0 | ||
| 2023 Q1 | 48 | $1.2B | 0 | ||
| 2022 Q4 | 55 | $1.0B | 0 | ||
| 2022 Q3 | 59 | $1.0B | 0 | ||
| 2022 Q2 | 58 | $1.2B | 0 | ||
| 2022 Q1 | 55 | $1.4B | 0 | ||
| 2021 Q4 | 76 | $1.6B | 0 | ||
| 2021 Q3 | 95 | $3.3B | 0 | ||
| 2021 Q2 | 113 | $5.7B | 100 | ||
| 2021 Q1 | 119 | $5.9B | 66 | ||
| 2020 Q4 | 90 | $5.5B | 51 | ||
| 2020 Q3 | 79 | $4.6B | 22 | ||
| 2020 Q2 | 73 | $4.5B | 27 | ||
| 2020 Q1 | 78 | $4.1B | 44 | ||
| 2019 Q4 | 77 | $6.1B | 27 | ||
| 2019 Q3 | 81 | $6.4B | 26 | ||
| 2019 Q2 | 75 | $6.9B | 32 | ||
| 2019 Q1 | 73 | $7.9B | 29 | ||
| 2018 Q4 | 70 | $7.5B | 44 | ||
| 2018 Q3 | 73 | $10.0B | 49 | ||
| 2018 Q2 | 75 | $10.8B | 48 | ||
| 2018 Q1 | 86 | $11.2B | 33 | ||
| 2017 Q4 | 74 | $11.9B | 28 | ||
| 2017 Q3 | 77 | $11.7B | 24 | ||
| 2017 Q2 | 81 | $11.3B | 37 | ||
| 2017 Q1 | 82 | $11.1B | 55 | ||
| 2016 Q4 | 83 | $10.8B | 42 | ||
| 2016 Q3 | 78 | $11.4B | 38 | ||
| 2016 Q2 | 69 | $10.8B | 47 | ||
| 2016 Q1 | 64 | $11.8B | 36 | ||
| 2015 Q4 | 66 | $12.2B | 33 | ||
| 2015 Q3 | 98 | $11.8B | 26 | ||
| 2015 Q2 | 110 | $12.7B | 23 | ||
| 2015 Q1 | 81 | $11.9B | 20 | ||
| 2014 Q4 | 79 | $10.8B | 29 | ||
| 2014 Q3 | 107 | $9.7B | 33 | ||
| 2014 Q2 | 110 | $9.8B | 21 | ||
| 2014 Q1 | 126 | $8.8B | 17 | ||
| 2013 Q4 | 130 | $8.4B | 33 | ||
| 2013 Q3 | 134 | $7.5B | 42 | ||
| 2013 Q2 | 133 | $7.9B | 0 |
Iridian Asset Management Llc/ct's most significant position changes for 2026-09-30: New buy: Xylem Inc (XYL); New buy: Clear Secure Inc -class A (YOU); New buy: Innoviva Inc (INVA); Sold out: Digitalbridge Group Inc (DBRG); Sold out: Labcorp Holdings Inc (LH).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | PGEN | Precigen Inc | +1.6% | -23.99% | Trim |
| 2 | NVCT | Nuvectis Pharma Inc | +1.2% | +2.08% | Add |
| 3 | NKTR | Nektar Therapeutics | +1.2% | +144.05% | Add |
| 4 | XYL | Xylem Inc | +0.8% | NEW | New buy |
| 5 | HGV | Hilton Grand Vacations Inc | +0.7% | +54.51% | Add |
| 6 | YOU | Clear Secure Inc -class A | +0.6% | NEW | New buy |
| 7 | FLS | Flowserve CORP | +0.5% | +203.84% | Add |
| 8 | ACVA | Acv Auctions Inc-a | +0.4% | -32.89% | Trim |
| 9 | INVA | Innoviva Inc | +0.3% | NEW | New buy |
| 10 | POST | Post Holdings Inc | +0.3% | +19.46% | Add |
| 11 | BALL | Ball CORP | +0.3% | +44.13% | Add |
| 12 | ABVX | Abivax Sa-adr | +0.2% | +85.54% | Add |
| 13 | RTO | Rentokil Initial Plc-sp Adr | +0.2% | +54.15% | Add |
| 14 | ICE | Intercontinental Exchange In | +0.1% | -9.54% | Trim |
| 15 | ON | On Semiconductor | +0.1% | +20.77% | Add |
| 16 | TGTX | Tg Therapeutics Inc | 0% | — | Unchanged |
| 17 | BCTX | Briacell Therapeutics CORP | 0% | — | Unchanged |
| 18 | BCTXL | Briacell Therapeutics CORP | 0% | — | Unchanged |
| 19 | CCK | Crown Holdings Inc | — | +0.62% | Add |
| 20 | ENR | Energizer Holdings Inc | 0% | -9.12% | Trim |
| 21 | LPLA | Lpl Financial Holdings Inc | 0% | -13.99% | Trim |
| 22 | BRBR | Bellring Brands Inc | 0% | +56.01% | Add |
| 23 | QSR | Restaurant Brands Intern | 0% | -8.36% | Trim |
| 24 | Z | Zillow Group Inc - C | 0% | -9.34% | Trim |
| 25 | KKR | Kkr & Co Inc | 0% | -9.34% | Trim |
| 26 | BKR | Baker Hughes Co | -0.1% | -9.36% | Trim |
| 27 | ESI | Element Solutions Inc | -0.1% | +21.31% | Add |
| 28 | SLB | Slb LTD | -0.1% | -18.81% | Trim |
| 29 | RH | Rh | -0.1% | -13.97% | Trim |
| 30 | MOH | Molina Healthcare Inc | -0.1% | EXIT | Sold out |
| 31 | LH | Labcorp Holdings Inc | -0.2% | EXIT | Sold out |
| 32 | DBRG | Digitalbridge Group Inc | -0.2% | EXIT | Sold out |
| 33 | HLF | Herbalife Ltd. | -0.3% | -0.91% | Trim |
| 34 | AMRZ | Amrize Ltd | -0.3% | -9.27% | Trim |
| 35 | CLVT | Clarivate Plc | -0.3% | -9.41% | Trim |
| 36 | BILL | Bill Holdings Inc | -0.4% | -33.98% | Trim |
| 37 | GEN | Gen Digital Inc | -0.5% | -31.24% | Trim |
| 38 | KPLT | Katapult Holdings Inc | -0.5% | +5.34% | Add |
| 39 | ELV | Elevance Health Inc | -0.5% | -31.60% | Trim |
| 40 | ✓ | National Energy Services Reu | -0.6% | -19.18% | Trim |
| 41 | TNL | Travel + Leisure Co | -0.7% | +0.95% | Add |
| 42 | FLEX | Flex Ltd. | -0.9% | -2.73% | Trim |
| 43 | AXSM | Axsome Therapeutics Inc | -1% | -5.83% | Trim |
| 44 | LAD | Lithia Motors Inc | -1.4% | -26.72% | Trim |
Iridian Asset Management Llc/ct returned an annualized 20.7% over the trailing 36 months — underperforming the S&P 500 by 3.4 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.07 (roughly in line with the market) and a 42% quarterly batting average against the index.
Its portfolio is broadly diversified and long-term-holding.
Its turnover score has fallen from 41 to 18 over the past 4 quarters — a shift toward longer holding periods.
It has added to its PGEN position over the past two quarters (+$12.3M, now $26.2M), while trimming ELV over the same stretch (-$2.3M, still holding $4.0M).
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