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MF

Magnetar Financial Portfolio holdings

AUM $9.84B
1-Year Est. Return 190.64%
This Fund
S&P 500
This Quarter Est. Return
+7.2%
1 Year Est. Return
+190.64%
3 Year Est. Return
+293.18%
5 Year Est. Return
+491.79%
10 Year Est. Return
+5,174.28%
AUM
$9.84B
AUM Growth
-$362M
Cap. Flow
-$305M
Cap. Flow %
-3.09%
Top 10 Hldgs %
55.7%
Holding
1,493
New
604
Increased
145
Reduced
173
Closed
363

Top Buys

Rank Stock Value
1
PEN icon
Penumbra
PEN
+$85.1M
2
WBS icon
Webster Financial
WBS
+$77.3M
3
AAUC
Allied Gold Corp
AAUC
+$76.1M
4
MASI
Masimo
MASI
+$66.2M
5
MCHPP
Microchip Technology Inc 7.50% Series A Preferred Stock
MCHPP
+$65.3M

Top Sells

Rank Stock Value
1
CMA
Comerica
CMA
+$99.1M
2
REVG
REV Group
REVG
+$97.8M
3
FYBR
Frontier Communications
FYBR
+$89.2M
4
CYBR
CyberArk
CYBR
+$89M
5
TGNA
TEGNA Inc
TGNA
+$84.5M

Sector Composition

Rank Sector Weight
1 Technology 53.03%
2 Financials 19.67%
3 Industrials 4.76%
4 Healthcare 4.19%
5 Materials 2.11%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
NHIC
101
NewHold Investment Corp III
NHIC
$298M
$13M 0.13%
1,250,000
– –
OBA
102
Oxley Bridge Acquisition Ltd
OBA
$324M
$12.7M 0.13%
1,250,000
– –
GSRF
103
GSR IV Acquisition Corp
GSRF
$299M
$12.5M 0.13%
+1,249,976
New +$12.5M
AMWD
104
DELISTED
American Woodmark
AMWD
$12.5M 0.13%
313,986
+1,258
+0.4% +$66.7K
ALUB
105
Alussa Energy Acquisition Corp II
ALUB
$12.5M 0.13%
+1,249,992
New +$12.5M
ITHA
106
ITHAX Acquisition Corp III
ITHA
$307M
$12.4M 0.13%
+1,250,000
New +$12.4M
IACOU
107
Idea Acquisition Corp Units
IACOU
$12.4M 0.13%
+1,250,000
New +$12.4M
MESH
108
Meshflow Acquisition Corp
MESH
$432M
$12.4M 0.13%
+1,249,992
New +$12.4M
BACC
109
Blue Acquisition Corp
BACC
$292M
$12.2M 0.12%
1,198,763
– –
AEXA
110
American Exceptionalism Acquisition Corp
AEXA
$579M
$11.9M 0.12%
1,100,000
– –
ALOV
111
Aldabra 4 Liquidity Opportunity Vehicle
ALOV
$11.8M 0.12%
+1,200,000
New +$11.8M
ARCI
112
Archimedes Tech SPAC Partners III
ARCI
$355M
$11.8M 0.12%
+1,200,000
New +$11.8M
FACT
113
FACT II Acquisition Corp
FACT
$259M
$11.2M 0.11%
1,061,498
– –
MBVI
114
M3-Brigade Acquisition VI Corp
MBVI
$439M
$11.1M 0.11%
+1,099,995
New +$11.1M
TMTSU
115
Spartacus Acquisition Corp II Unit
TMTSU
$11M 0.11%
+1,100,000
New +$11M
SVAQ
116
Silicon Valley Acquisition Corp
SVAQ
$294M
$10.9M 0.11%
+1,100,000
New +$10.9M
LEGO
117
Legato Merger Corp IV
LEGO
$312M
$10.8M 0.11%
+1,099,995
New +$10.9M
XSLL
118
Xsolla SPAC 1
XSLL
$275M
$10.8M 0.11%
+1,100,000
New +$10.8M
DRDB
119
Roman DBDR Acquisition Corp II
DRDB
$325M
$10.5M 0.11%
1,000,000
– –
GTEN
120
Gores Holdings X
GTEN
$10.5M 0.11%
1,022,724
– –
LWAC
121
LightWave Acquisition Corp
LWAC
$10.4M 0.11%
1,022,800
– –
FAC
122
Factorial Energy Inc
FAC
$547M
$10.3M 0.1%
1,000,000
– –
IPCX
123
Inflection Point Acquisition Corp III
IPCX
$359M
$10.2M 0.1%
1,000,000
– –
RDAG
124
Republic Digital Acquisition Co
RDAG
$388M
$10.2M 0.1%
1,000,000
– –
PACH
125
Pioneer Acquisition I Corp
PACH
$292M
$10.2M 0.1%
1,000,000
– –
3 4
5
6 7

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HI
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MPI
Mairs & Power Inc St Paul, Minnesota $9.79B AUM 20.6% 1-Year Est. Return
URS
Utah Retirement Systems Salt Lake City, Utah $9.78B AUM 28.72% 1-Year Est. Return
FPAS
Focus Partners Advisor Solutions Saint Louis, Missouri $9.92B AUM 21.52% 1-Year Est. Return
CCM
Cullen Capital Management New York $9.75B AUM 21.81% 1-Year Est. Return
OAM
OP Asset Management Helsinki $9.95B AUM 30.22% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return
HL
Harding Loevner Bridgewater, New Jersey $9.72B AUM 22.38% 1-Year Est. Return

Magnetar Financial's Q1 2026 Portfolio in Review

As of Q1 2026, Magnetar Financial held 1,493 positions worth $9.84B, down 3.5% from $10.2B the previous quarter. Its ten largest holdings account for 56% of the portfolio.

Magnetar Financial withdrew a net $305M in Q1 2026, closing 363 positions and reducing 173 holdings. Its most notable exit was Comerica, an estimated $99.1M position sold in full.

By sector, the portfolio is most concentrated in Technology at 53% of assets, down from 54% a quarter earlier, followed by Financials and Industrials.

Against the trend, Magnetar Financial opened a new position in Penumbra worth $82.6M.

  • Magnetar Financial's largest Q1 2026 buy was Penumbra: 251,433 shares worth $82.6M.
  • Magnetar Financial added most to Webster Financial in Q1 2026, an estimated $77.3M increase.
  • Magnetar Financial's biggest Q1 2026 reduction was Shift4 Payments Inc 6.00% Series A Preferred Stock, cutting an estimated $37.3M.
  • Magnetar Financial fully exited Comerica in Q1 2026, selling an estimated $99.1M.
  • Magnetar Financial's ten largest holdings make up 56% of its $9.84B portfolio in Q1 2026.
  • Magnetar Financial opened 604 new positions and closed 363 in Q1 2026.
  • Magnetar Financial's portfolio value fell 3.5% quarter-over-quarter to $9.84B.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.