Magnetar Financial LLC
Long book
$9.56B
Q1 2026
Positions
1122
Top-10 weight
57%
concentration
Last quarter
+5.5%
SPY +14.8%
Turnover
65%
of book per quarter
Strategy in plain words
auto-generated from filingsMagnetar Financial LLC is a quantitative fund whose holdings reflect models, not opinions, running a $9.56B US long book across 1122 positions.
The portfolio is concentrated: the top 10 names carry 57% of the portfolio. Turnover is high — positions rotate quickly, so individual names matter less than the process. Current anchor positions: COREWEAVE INC-CL A, AIR LEASE CORP, CHART INDUSTRIES INC, TXNM ENERGY INC, PENUMBRA INC.
Over the last 9 quarters its long book ran on average 15.7pp per quarter ahead of the S&P 500, beating the index in 4 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
-3.2%
Q2 2024
+7.6%
Q3 2024
-5.3%
Q4 2024
-1.4%
Q1 2025
+225.7%
Q2 2025
-13.6%
Q3 2025
-38.2%
Q4 2025
+4.4%
Q1 2026
+5.5%
Sector allocation
Technology 56%
Financials 20%
Other 9%
Industrials 4%
Utilities 2%
Healthcare 2%
Communications 2%
Services media 2%
Long book by quarter
What does Magnetar Financial own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| CRWV COREWEAVE INC-CL A | Technology | 68.6M | $4.74B | 49.6% | +0.5% |
| AL AIR LEASE CORP | — | 1.3M | $87.2M | 0.9% | -15.4% |
| GTLS CHART INDUSTRIES INC | Industrials | 420.4K | $86.9M | 0.9% | -16.2% |
| TXNM TXNM ENERGY INC | Utilities | 1.5M | $86.2M | 0.9% | -13.2% |
| PEN PENUMBRA INC | Healthcare | 251.4K | $82.6M | 0.9% | New |
| WBD WARNER BROS DISCOVERY INC | Communications | 3.0M | $81.7M | 0.9% | -5.2% |
| PRA PROASSURANCE CORP | Financials | 3.2M | $80.3M | 0.8% | -6.8% |
| KVUE KENVUE INC | Other | 4.6M | $79.4M | 0.8% | -12.5% |
| WBS WEBSTER FINANCIAL CORP | Financials | 1.1M | $78.9M | 0.8% | +14912.0% |
| AAUC ALLIED GOLD CORP | — | 2.5M | $78.1M | 0.8% | New |
| NSC NORFOLK SOUTHERN CORP | Industrials | 275.2K | $77.7M | 0.8% | -20.0% |
| TECK TECK RESOURCES LTD-CLS B | Materials | 1.5M | $77.5M | 0.8% | -20.4% |
| MASI* MASIMO CORP | — | 427.1K | $76.0M | 0.8% | +7729.2% |
| DBRG DIGITALBRIDGE GROUP INC | Financials | 4.2M | $65.0M | 0.7% | +91.3% |
| VICI Vici properties inc | Real estate | 807.4K | $64.5M | 0.7% | +0.4% |
| HPE 7.625 09/01/27 HP ENTERPRISE CO | — | 925.0K | $60.3M | 0.6% | +85.0% |
| MCHP MICROCHIP TECHNOLOGY INC | Technology | 1.0M | $58.9M | 0.6% | New |
| AM6 AMICUS THERAPEUTICS INC | — | 4.0M | $57.6M | 0.6% | +0.5% |
| T86 TRI POINTE HOMES INC | — | 1.2M | $55.5M | 0.6% | +1684.1% |
| SLAB SILICON LABORATORIES INC | Technology | 245.8K | $51.2M | 0.5% | New |
| WTRG ESSENTIAL UTILITIES INC | Utilities | 1.2M | $48.5M | 0.5% | +0.4% |
| VAL VALARIS LTD | Energy | 487.3K | $47.8M | 0.5% | +5972.1% |
| ACLXGBX ARCELLX INC | — | 394.9K | $45.3M | 0.5% | New |
| UNF UNIFIRST CORP/MA | Services media | 171.9K | $43.2M | 0.5% | New |
| VECO VEECO INSTRUMENTS INC | Industrials | 1.3M | $42.9M | 0.4% | -25.1% |
| QRVO QORVO INC | Technology | 541.2K | $41.9M | 0.4% | -0.3% |
| 8TG THERMON GROUP HOLDINGS INC | — | 758.0K | $38.2M | 0.4% | New |
| LBRDK LIBERTY BROADBAND-C | Communications | 723.8K | $36.4M | 0.4% | -1.9% |
| APLSUSD APELLIS PHARMACEUTICALS INC | — | 869.2K | $35.0M | 0.4% | New |
| SKYT SKYWATER TECHNOLOGY INC | Technology | 1.2M | $32.2M | 0.3% | New |
| IMXI INTERNATIONAL MONEY EXPRESS | Services media | 1.9M | $30.4M | 0.3% | +0.4% |
| ORCL ORACLE CORP | Technology | 650.0K | $29.8M | 0.3% | New |
| STEL STELLAR BANCORP INC | Financials | 812.2K | $29.7M | 0.3% | New |
| UTE0 CANTALOUPE INC | — | 2.7M | $29.0M | 0.3% | -26.7% |
| SNCY SUN COUNTRY AIRLINES HOLDING | — | 1.7M | $28.3M | 0.3% | New |
| CCXI CHURCHILL CAPITAL CORP-CL A | Financials | 2.7M | $27.4M | 0.3% | New |
| DMII DRUGS MADE IN AMERICA ACQUIS | Financials | 2.7M | $26.9M | 0.3% | Held |
| NOVT NOVANTA INC | Technology | 500.0K | $26.8M | 0.3% | +400.0% |
| EVAC EQV VENTURES ACQUISITION C-A | Financials | 2.5M | $25.2M | 0.3% | Held |
| TACH TITAN ACQUISITION CORP-CL A | Financials | 2.2M | $22.7M | 0.2% | Held |
| NEE NEXTERA ENERGY INC | Utilities | 450.0K | $22.6M | 0.2% | New |
| TALK TALKSPACE INC | Healthcare | 4.3M | $22.0M | 0.2% | New |
| LPBB LAUNCH TWO ACQUISITION- CL A | Financials | 2.0M | $21.0M | 0.2% | Held |
| LPAA LAUNCH ONE ACQUISITION CORP | Financials | 1.9M | $20.9M | 0.2% | Held |
| SIMA SIM ACQUISITION CORP I-A | Financials | 1.9M | $20.8M | 0.2% | Held |
| RAC RITHM ACQUISITION CORP-A | Financials | 2.0M | $20.7M | 0.2% | Held |
| CUB LIONHEART HOLDINGS - CL A | Financials | 1.9M | $20.6M | 0.2% | Held |
| AXTA AXALTA COATING SYSTEMS LTD | Other | 741.6K | $20.5M | 0.2% | +0.4% |
| ALDF ALDEL FINANCIAL II INC | Financials | 1.9M | $20.1M | 0.2% | Held |
| ALF CENTURION ACQUISITION CORP | Financials | 1.9M | $20.0M | 0.2% | Held |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 13, 2026 | 1755 | $9.84B | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 17, 2026 | 1486 | $10.21B | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 13, 2025 | 1474 | $16.50B | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 12, 2025 | 1512 | $20.65B | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 15, 2025 | 1329 | $7.61B | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 11, 2025 | 942 | $4.36B | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 13, 2024 | 829 | $4.62B | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 14, 2024 | 497 | $4.80B | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 15, 2024 | 363 | $4.47B | canonical | SEC ↗ |
Similar funds
DIMENSIONAL FUND ADVISORS LPAQR CAPITAL MANAGEMENT LLCARROWSTREET CAPITAL, LIMITED PARTNERSHIPD. E. Shaw & Co., Inc.TWO SIGMA INVESTMENTS, LPMARSHALL WACE, LLPACADIAN ASSET MANAGEMENT LLCQube Research & Technologies LtdRENAISSANCE TECHNOLOGIES LLCMan Group plcSquarepoint Ops LLCAlyeska Investment Group, L.P.