IRIDIAN ASSET MANAGEMENT LLC/CT

Q4 2025 13F-HR Holdings

Location
Westport, CT
Holdings as of
12/31/2025
Date filed
1/23/2026
Form type
13F-HR
Num holdings
43
Total value ($000)
$271,616
Net value change ($000)
+17,536 (6.9%)
New positions
5
Sold out positions
5
Turnover %
5.8%
Sector allocation + QoQ delta (equities-only)
Prev filing: 10/24/2025 Next filing: 4/23/2026 SEC filing

Snapshot: Change Analysis

Compared to Q3 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)
HGV 9,349 81.6%
ACVA 5,334 28.6%
BALL 4,156 176.8%
POST 3,953 30.9%
AXSM 3,328 32.8%
HLF 3,000 14.5%
PGEN 2,985 24.7%
KPLT 2,252 61.0%
BILL 2,193 27.3%
NVCT 1,985 81.3%
Top Reduces (Value $000, Stocks/ETFs)
ELV -8,046 -47.8%
LAWIL -6,815 -100.0%
RTO -6,493 -41.8%
GTLS -4,575 -77.8%
TNL -3,369 -18.5%
WBD -2,796 -100.0%
IMRX -1,926 -100.0%
QSR -535 -17.6%
TGTX -476 -17.5%
BKR -443 -14.4%
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