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Magnetar Financial LLC

Registered adviser
Location
EVANSTON, IL
Portfolio Value
Large $10,145,584,634
Diversification
Highly concentrated
Reports for
Magnetar Asset Management LLC
Filing Date
Global Rank
#536 / 8,819 ▼ 57
Top Industry
Software - Infrastructure 53.0%
Period ended 4 months ago
Filed Aug 14, 2026 · 3mo
26 quarters · since Mar 2020

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type
Registered adviser
Form ADV roster, Oct 1, 2026
Form ADV adviser
CRD 136045
Roster of Oct 1, 2026
Regulatory AUM
$31,989,742,362
Main clients
Pooled investment vehicles (96% of AUM)
Private funds
58 funds · Hedge funds
Focus by gross assets, Schedule D of Nov 27, 2024
$30,721,776,125 gross assets
LEI
Y87OTE6MEONXIE7RT173
Private funds on Schedule D 7.B.(1)
As filed Nov 27, 2024; SEC's bulk Form ADV archive ends with 2024 filings.
$22,379,651,686 gross assets in 62 funds Hedge funds $22,379,651,686 (62)
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
Rosters Regulatory AUM Main clients
Apr 2026 to Oct 2026 $31,989,742,362 Pooled investment vehicles (96%)
Mar 2026 $26,230,760,410 Pooled investment vehicles (95%)
Dec 2025 to Feb 2026 $26,230,760,410 Pooled investment vehicles (95%)
May 2025 to Sep 2025 $26,230,760,410 Pooled investment vehicles (95%)
Apr 2025 $26,230,760,410 Pooled investment vehicles (95%)
Feb 2025 to Mar 2025 $23,106,396,704 Pooled investment vehicles (93%)
13 earlier changes not shown.

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style
Concentrated
3.8 effective positions (12 or fewer)
Turnover
Medium turnover
56.9% over the last four quarters (30% to under 100%)
Horizon
Medium horizon
Value-weighted holding period 4.4 quarters (4 to under 12)

Closest benchmark: every 13F filer's combined book, active share 95.4%; sector active share 41.9% against the combined 13F book's sector weights.

Over time 26 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

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Portfolio Concentration

1,065 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026
Top Position
51.1%
−2.6 pts
Top 5
54.5%
−2.6 pts
Top 10
58.5%
−2.7 pts
HHI
2,625
Sep 2023 → Jun 2026 · range 208 – 7,334
Highly concentrated−273

Portfolio Trend

26 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026
Sector % Portfolio Value
Technology 56.9% $5,768,799,241
Financial Services 24.4% $2,473,388,896
Industrials 3.6% $368,863,101
Healthcare 3.5% $359,148,531
Communication Services 2.7% $278,440,548
Utilities 2.4% $248,350,687
Basic Materials 1.8% $186,562,922
Consumer Cyclical 1.4% $139,851,547
Real Estate 1.1% $114,949,529
Consumer Defensive 1.1% $108,312,959
Energy 0.5% $53,764,402
Unclassified 0.4% $45,152,271

Last Quarter's Activity

Export CSV
Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased
25 positions
Ticker Δ Shares Shares Value Open
— +151,395 1,401,395 $15,261,191
— +90,684 4,349,317 $22,616,448

Trimmed

Positions the filer reduced
25 positions
Ticker Δ Shares Shares Value Open
— −124,993 1,175,000 $12,126,000

New Positions

Positions the filer opened this quarter
25 positions
Ticker Shares Value Open
— 399,123 $52,975,594
— 2,263,253 $26,502,692

Sold Out

Positions the filer fully exited
25 positions
Ticker Shares Value Open
— 1,342,230 $87,164,416
— 3,246,435 $80,251,873
— 427,081 $75,964,897
— 807,431 $64,546,034
— 3,986,058 $57,638,399
— 1,188,448 $55,536,175
— 394,931 $45,345,977
— 757,996 $38,202,998
— 869,229 $34,969,082
— 2,680,584 $28,977,113
— 1,715,845 $28,345,760
— 1,900,000 $20,026,000
— 671,272 $17,312,105
— 281,614 $14,846,690
— 645,173 $13,832,509
— 313,986 $12,506,063

Portfolio Positions

Export CSV View 13F filing
1,065 tracked positions · $10,145,584,634 total · filing declares 1,713 positions · $10,958,895,979 · as of Jun 30, 2026
Showing 1–50 of 1,065 positions by value · page 1 of 22
Ticker Company Shares Value (USD) % of Portfolio History
1,156,698 $88,394,860 0.87%
418,310 $87,401,691 0.86%
1,236,534 $54,988,667 0.54%
399,123 $52,975,594 0.52%
548,149 $51,125,856 0.50%
1,184,635 $41,248,990 0.41%
812,216 $31,936,332 0.31%
2,263,253 $26,502,692 0.26%
735,491 $24,462,430 0.24%
4,349,317 $22,616,448 0.22%

Showing the top 50 of 1,065 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.