JANA Partners Management, LP

Q3 2026 13F-HR Holdings

Location
New York, NY
Holdings as of
9/30/2026
Date filed
11/13/2026
Form type
13F-HR
Num holdings
10
Total value ($000)
$1,589,135
Net value change ($000)
-313,166 (-16.5%)
New positions
2
Sold out positions
2
Turnover %
26.9%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/14/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q2 2026
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)
CWST 145,634 NEW
MOD 53,842 NEW
RPD 27,810 50.9%
FISV 7,883 4.4%
Top Reduces (Value $000, Stocks/ETFs)
MRCY -162,982 -33.7%
MKL -149,880 -100.0%
PSTG -77,939 -100.0%
SPY -42,025 -16.4%
COO -39,914 -15.5%
FUN -37,666 -43.0%
ALKT -29,892 -24.4%
LW -8,038 -3.5%
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