IRIDIAN ASSET MANAGEMENT LLC/CT

Q3 2025 13F-HR Holdings

Location
Westport, CT
Holdings as of
9/30/2025
Date filed
10/24/2025
Form type
13F-HR
Num holdings
43
Total value ($000)
$254,080
Net value change ($000)
-34,647 (-12.0%)
New positions
4
Sold out positions
2
Turnover %
13.0%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/14/2025 Next filing: 1/23/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
PGEN 5,988 98.6%
HGV 3,210 38.9%
SLB 2,094 NEW
IMRX 1,926 NEW
MOH 1,829 NEW
AVDL 1,602 72.5%
HLF 1,463 7.6%
BILL 1,347 20.2%
NESR 1,240 91.6%
DBRG 1,040 28.6%
Top Reduces (Value $000, Stocks/ETFs)
SPY -24,714 -100.0%
TNL -4,470 -19.7%
WBD -3,496 -55.6%
YOU -3,207 -66.8%
LAD -3,084 -17.1%
CCK -3,041 -35.7%
CRL -2,738 -37.9%
POST -2,460 -16.1%
CHX -2,351 -100.0%
LAWIL -1,768 -20.6%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type