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MF

Magnetar Financial Portfolio holdings

AUM $11B
1-Year Est. Return 3.37%
This Fund
S&P 500
This Quarter Est. Return
+7.2%
1 Year Est. Return
-3.37%
3 Year Est. Return
+334.16%
5 Year Est. Return
+550.58%
10 Year Est. Return
+5,328.36%
AUM
$9.84B
AUM Growth
-$362M
Cap. Flow
-$294M
Cap. Flow %
-2.99%
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
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 Miscellaneous 8.46%
4 Industrials 4.76%
5 Healthcare 4.19%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
ACEL icon
1126
Accel Entertainment
ACEL
$957M
– –
-33,316
Closed -$380K
ACHR icon
1127
Archer Aviation
ACHR
$4.44B
– –
-123,861
Closed -$931K
ADM icon
1128
Archer Daniels Midland
ADM
$38.4B
– –
-7,493
Closed -$431K
ADP icon
1129
Automatic Data Processing
ADP
$114B
– –
-5,663
Closed -$1.46M
ADSK icon
1130
Autodesk
ADSK
$54.7B
– –
-19,599
Closed -$5.8M
AEO icon
1131
American Eagle Outfitters
AEO
$2.88B
– –
-49,886
Closed -$1.32M
ALGN icon
1132
Align Technology
ALGN
$11.2B
– –
-8,025
Closed -$1.25M
ALKS icon
1133
Alkermes
ALKS
$8.04B
– –
-13,701
Closed -$383K
ALRM icon
1134
Alarm.com
ALRM
$2.84B
– –
-11,438
Closed -$584K
ALV icon
1135
Autoliv
ALV
$8.93B
– –
-2,434
Closed -$289K
AMD icon
1136
Advanced Micro Devices
AMD
$776B
– –
-8,987
Closed -$1.92M
AMZN icon
1137
Amazon
AMZN
$2.81T
– –
-1,566
Closed -$361K
ANF icon
1138
Abercrombie & Fitch
ANF
$6.63B
– –
-27,674
Closed -$3.48M
AON icon
1139
Aon
AON
$75.5B
– –
-4,576
Closed -$1.61M
ARWR icon
1140
Arrowhead Research
ARWR
$12B
– –
-39,901
Closed -$2.65M
ATR icon
1141
AptarGroup
ATR
$8.43B
– –
-6,240
Closed -$761K
ATXS
1142
DELISTED
Astria Therapeutics
ATXS
– –
-3,431,007
Closed -$44.9M
AVA icon
1143
Avista
AVA
$3.19B
– –
-77,221
Closed -$2.98M
AVAV icon
1144
AeroVironment
AVAV
$7.54B
– –
-11,363
Closed -$2.75M
AVNS
1145
DELISTED
Avanos Medical
AVNS
– –
-43,687
Closed -$491K
AVO icon
1146
Mission Produce
AVO
$1.12B
– –
-43,969
Closed -$510K
AVY icon
1147
Avery Dennison
AVY
$13.5B
– –
-5,361
Closed -$975K
AZTA icon
1148
Azenta
AZTA
$1.44B
– –
-7,391
Closed -$246K
BA icon
1149
Boeing
BA
$165B
– –
-37,049
Closed -$8.04M
BALL icon
1150
Ball Corp
BALL
$16.9B
– –
-27,218
Closed -$1.44M
44 45
46
47 48

Similar funds

BEI
Benjamin Edwards Inc Clayton, Missouri $11B AUM 18.22% 1-Year Est. Return
LCAM
London & Capital Asset Management London, United Kingdom $10.9B AUM 39.88% 1-Year Est. Return
IIM
INTECH Investment Management West Palm Beach, Florida $10.9B AUM 37.22% 1-Year Est. Return
RCMNY
Rubric Capital Management (New York) New York $10.9B AUM 70.31% 1-Year Est. Return
MPI
Mairs & Power Inc St Paul, Minnesota $10.9B AUM 27.5% 1-Year Est. Return
RCMF
RK Capital Management (Florida) Weston, Florida $10.8B AUM 53.02% 1-Year Est. Return
SIM
SRS Investment Management New York $10.8B AUM 34.05% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $11.1B AUM 207.82% 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's Q1 2026 filing shows 604 new, 145 increased, 173 reduced and 363 closed positions. Its largest new stake was Penumbra: 251,433 shares worth $82.6M. The largest sale was Comerica, an estimated $99.1M.

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

  • 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.