Stocks/Funds/CIK 1033427

IRIDIAN ASSET MANAGEMENT LLC/CT

long-term holder
Quarterly 13F filings · Latest period 2026-03-31 · CIK 1033427
Assets
$247M
-22.6% YoY
Holdings
42
Lifetime alpha vs market
-2.38% annual
Average hold time
4.3 yr
median 4.8 yr

Quarterly history

Cum return +122% vs S&P +157% · α -35% lifetimeAUM $247M · peak $11.9BFlow $-3M (-1%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
+7.32%
adds when stocks drop
when a holding falls −10%+
Middle response
-6.73%
baseline attrition
Rally response
-11.17%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
HLFHerbalife Nutrition Ltd.$24M9.7%+70.6%5.3 yr
ACVAACV Auctions Inc.$22M8.9%-69.9%5.3 yr
HGVHilton Grand Vacations I$19M7.7%+4.6%5.3 yr
POSTPost Holdings, Inc.$18M7.3%-15.0%9.8 yr
LADLithia Motors, Inc.$16M6.6%-14.3%5.5 yr
PGENPrecigen, Inc.$14M5.6%+159.7%6.3 yr
TNLTravel + Leisure Co.$14M5.5%+55.0%5.3 yr
AXSMAxsome Therapeutics, Inc$11M4.6%+44.9%7.3 yr
ESIElement Solutions Inc$8M3.3%+52.8%5.5 yr
BILLBill.com Holdings, Inc.$8M3.1%-16.5%3.3 yr
$6M2.6%2.8 yr
ANTMElevance Health Inc.$6M2.6%8.0 yr
RTORentokil Initial plc$6M2.4%+39.3%3.5 yr
LPLALPL Financial Holdings I$6M2.4%-7.7%5.3 yr
ONON Semiconductor Corpora$5M2.2%+52.2%4.8 yr

Portfolio composition (YoY)

Industry mix
Packaged Foods18.4%+4.6pp$45M
Auto - Dealerships15.6%+1.2pp$38M
Biotechnology14.5%+7.0pp$36M
Gambling, Resorts & Casinos7.7%+2.0pp$19M
Travel Services5.5%-1.4pp$14M
Oil & Gas Equipment & Services4.4%+1.6pp$11M
Software - Application3.5%+0.6pp$9M
Chemicals - Specialty3.3%+1.4pp$8M
Medical - Healthcare Plans3.0%-4.1pp$7M
Unknown2.9%+0.3pp$7M
Country
US89.9%+3.3pp
GB4.2%-3.1pp
Unknown2.9%+0.3pp
SG1.9%+0.9pp
CA1.0%-1.4pp
Top 5: 40.2% · Top 10: 62.4% · Top 25: 91.0%

Winners

TickerPrev $PnLYoY %
HLF$24M+0.02B70.6%
TNL$22M+0.01B55.0%
PGEN$7M+0.01B159.7%
RTO$19M+0.01B39.3%
AXSM$12M+0.01B44.9%

Losers

TickerPrev $PnLYoY %
ACVA$28M-0.02B-69.9%
POST$20M-0.00B-15.0%
GEN$11M-0.00B-27.7%
LAD$18M-0.00B-14.3%
CLVT$5M-0.00B-35.6%

Top buys this quarter · 15

ACVA ACV Auctions Inc.+$22M
LAD Lithia Motors, Inc.+$5M
BRBR BellRing Brands, Inc.+$3M
ENR Energizer Holdings, Inc.+$2M
NKTR Nektar Therapeutics+$2M
LPLA LPL Financial Holdings Inc.+$2M
KKR KKR & Co. Inc.+$1M
POST Post Holdings, Inc.+$1M
HGV Hilton Grand Vacations Inc.+$19M
CLVT Clarivate Plc+$5M

Top sells this quarter · 15

RTO Rentokil Initial plc$4M
HLF Herbalife Nutrition Ltd.$24M
CRL Charles River Laboratories Int$3M
GTLS Chart Industries, Inc.exit$1M
CCK Crown Holdings, Inc.$1M
YOU Clear Secure, Inc.$1M
AXSM Axsome Therapeutics, Inc.$1M
ESI Element Solutions Inc$7M
TNL Travel + Leisure Co.$1M
BKR Baker Hughes Company$3M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$247M42+16.27%+17.59%-1.33%-0.00B
2025-12-31$272M43+20.87%+17.72%+3.15%-0.01B
2025-09-30$254M43+15.05%+17.52%-2.47%-0.05B
2025-06-30$289M42+15.51%+14.94%+0.57%-0.05B
2025-03-31$319M45+5.88%+8.30%-2.42%-0.04B
2024-12-31$376M48+18.87%+24.89%-6.02%-0.12B
2024-09-30$467M53+20.94%+36.04%-15.10%-0.00B
2024-06-30$443M51+11.46%+24.49%-13.04%-0.06B
2024-03-31$510M55+31.81%+29.62%+2.18%-0.08B
2023-12-31$551M52+20.48%+26.18%-5.69%+0.02B
2023-09-30$494M50+22.99%+21.57%+1.43%-0.56B
2023-06-30$1.07B50+18.10%+19.42%-1.32%-0.34B
2023-03-31$1.22B47-25.43%-7.82%-17.61%+0.20B
2022-12-31$1.04B52+10.84%+7.56%+3.27%-0.08B
2022-09-30$1.01B54-5.97%-4.93%-1.04%-0.14B
2022-06-30$1.22B53-26.93%-16.11%-10.82%+0.25B