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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
CVLT icon
526
Commault Systems
CVLT
$5.68B
$749K 0.01%
+9,613
New +$912K
LRCX icon
527
Lam Research
LRCX
$383B
$747K 0.01%
3,735
+160
+4% +$35.8K
ARCO icon
528
Arcos Dorados Holdings
ARCO
$1.69B
$745K 0.01%
+90,332
New +$733K
VRTX icon
529
Vertex Pharmaceuticals
VRTX
$137B
$741K 0.01%
+1,672
New +$780K
PNR icon
530
Pentair
PNR
$9.85B
$741K 0.01%
8,822
-2,291
-21% -$224K
MCFT icon
531
MasterCraft Boat Holdings
MCFT
$580M
$740K 0.01%
+36,086
New +$782K
SITE icon
532
SiteOne Landscape Supply
SITE
$4.22B
$738K 0.01%
5,548
-23,750
-81% -$3.36M
FERG icon
533
Ferguson
FERG
$44.2B
$738K 0.01%
3,163
-18,204
-85% -$4.43M
GPN icon
534
Global Payments
GPN
$24.3B
$734K 0.01%
+11,073
New +$817K
CNI icon
535
Canadian National Railway
CNI
$76.1B
$732K 0.01%
7,119
-38,635
-84% -$3.98M
MCRI icon
536
Monarch Casino & Resort
MCRI
$2.22B
$722K 0.01%
7,552
+2,047
+37% +$195K
TCMD icon
537
Tactile Systems Technology
TCMD
$528M
$721K 0.01%
+27,594
New +$787K
CCRN
538
DELISTED
Cross Country Healthcare
CCRN
$721K 0.01%
76,689
-431,098
-85% -$3.86M
KMT icon
539
Kennametal
KMT
$2.26B
$721K 0.01%
+19,943
New +$727K
ACMR icon
540
ACM Research
ACMR
$5.22B
$720K 0.01%
+18,303
New +$972K
VRNS icon
541
Varonis Systems
VRNS
$5.16B
$715K 0.01%
+33,301
New +$903K
YOU icon
542
Clear Secure
YOU
$4.48B
$712K 0.01%
+14,711
New +$586K
ALLY icon
543
Ally Financial
ALLY
$12.8B
$707K 0.01%
18,022
-9,216
-34% -$379K
SAM icon
544
Boston Beer
SAM
$1.88B
$704K 0.01%
3,055
+1,920
+169% +$432K
VSEC icon
545
VSE Corp
VSEC
$6.05B
$703K 0.01%
+3,813
New +$776K
HNI icon
546
HNI Corp
HNI
$3.57B
$702K 0.01%
21,036
-41,409
-66% -$1.83M
RDWR icon
547
Radware
RDWR
$1.21B
$701K 0.01%
26,626
-8,426
-24% -$210K
KEY icon
548
KeyCorp
KEY
$23.4B
$696K 0.01%
+35,900
New +$752K
RBCAA icon
549
Republic Bancorp
RBCAA
$1.86B
$695K 0.01%
+9,847
New +$695K
INSW icon
550
International Seaways
INSW
$4.9B
$693K 0.01%
+9,507
New +$608K
20 21
22
23 24

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LCAM
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IIM
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RCMNY
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MPI
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ACA
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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.