Magnetar Financial LLC

Q1 2026 13F-HR Holdings

Location
Evanston, IL
Holdings as of
3/31/2026
Date filed
5/13/2026
Form type
13F-HR
Num holdings
1,130
Total value ($000)
$9,844,500
Net value change ($000)
-361,815 (-3.5%)
New positions
542
Sold out positions
370
Turnover %
39.0%
Sector allocation + QoQ delta (equities-only)

Holdings aggregated across other managers listed in the original SEC filing. View detailed breakdown

Prev filing: 2/17/2026 Next filing: — SEC filing

Snapshot: Change Analysis

Compared to Q4 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)
PEN 82,563 NEW
WBS 78,434 16443.2%
AAUC 78,092 NEW
MASI 75,256 10614.4%
MCHP 58,940 NEW
TPH 53,440 2549.6%
SLAB 51,168 NEW
VAL 47,370 11725.2%
NSA 46,363 NEW
ACLX 45,346 NEW
Top Reduces (Value $000, Stocks/ETFs)
CRWV -140,807 -2.9%
CMA -99,098 -100.0%
REVG -97,784 -100.0%
FYBR -89,206 -100.0%
CYBR -88,983 -100.0%
TGNA -84,548 -100.0%
RNAM -83,570 -100.0%
CFLT -79,546 -100.0%
EXAS -71,932 -100.0%
STAA -57,087 -100.0%
Instrument mix + QoQ Δ (ex-options)
Derivatives reported exposure ($000): 13,778 (0.1% of total reported value)
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