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Magnetar Financial LLC

Location
EVANSTON, IL
Portfolio Value
Small $206,604,368
Diversification
Highly concentrated
Filing Date
Global Rank
#443 / 8,588 ▲ 54
Top Industry
Software - Infrastructure 58.6%
3Y Alpha vs SPY
-5.7%
Period ended 3 months ago
Filed May 18, 2026 · 30d
25 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio
+54.1%
SPY
+78.1%
Annualised alpha
-5.7%
Max drawdown
−57.9%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

841 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025
Top Position
57.2%
−3.4 pts
Top 5
60.9%
−4.7 pts
Top 10
65.2%
−5.9 pts
HHI
3,291
Jun 2023 → Mar 2026 · range 241 – 7,612
Highly concentrated−405

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026
Sector % Portfolio Value
Technology 61.7% $5,731,593,124
Financial Services 18.1% $1,682,398,772
Industrials 5.0% $460,762,196
Healthcare 4.5% $413,292,518
Basic Materials 2.2% $206,604,368
Utilities 1.7% $161,008,080
Consumer Defensive 1.5% $140,292,386
Consumer Cyclical 1.5% $136,889,051
Communication Services 1.2% $108,658,810
Real Estate 1.0% $90,326,794
Energy 0.8% $76,824,135
Unclassified 0.8% $73,625,229

Last Quarter's Activity

Export CSV
Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open

New Positions

Positions the filer opened this quarter
25 positions
Ticker Shares Value Open

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open

Portfolio Positions

Export CSV View 13F filing
38 positions · $206,604,368 total · Basic Materials only · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio History