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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
CENX icon
651
Century Aluminum
CENX
$4.61B
$436K ﹤0.01%
+7,437
New +$373K
DY icon
652
Dycom Industries
DY
$8.88B
$432K ﹤0.01%
1,275
-402
-24% -$151K
MATV icon
653
Mativ Holdings
MATV
$669M
$432K ﹤0.01%
49,632
+23,140
+87% +$265K
CSV icon
654
Carriage Services
CSV
$541M
$431K ﹤0.01%
+9,439
New +$411K
HTGC icon
655
Hercules Capital
HTGC
$3.27B
$427K ﹤0.01%
28,919
-34,651
-55% -$566K
INTA icon
656
Intapp
INTA
$3.33B
$426K ﹤0.01%
+16,578
New +$494K
TTMI icon
657
TTM Technologies
TTMI
$12.5B
$425K ﹤0.01%
+4,358
New +$415K
IQV icon
658
IQVIA
IQV
$43.1B
$424K ﹤0.01%
+2,550
New +$498K
FERAR
659
Fifth Era Acquisition Corp I Rights
FERAR
$422K ﹤0.01%
1,500,000
– –
CECO icon
660
Ceco Environmental
CECO
$4.08B
$421K ﹤0.01%
+7,065
New +$455K
TGTX icon
661
TG Therapeutics
TGTX
$8.26B
$419K ﹤0.01%
+12,617
New +$376K
APPF icon
662
AppFolio
APPF
$8.3B
$418K ﹤0.01%
+2,651
New +$502K
CWK icon
663
Cushman & Wakefield Ltd
CWK
$3.31B
$417K ﹤0.01%
34,017
+4,720
+16% +$67.7K
SWIM icon
664
Latham Group
SWIM
$833M
$416K ﹤0.01%
+77,515
New +$494K
ARLO icon
665
Arlo Technologies
ARLO
$1.39B
$415K ﹤0.01%
29,134
+15,444
+113% +$206K
LYTS icon
666
LSI Industries
LYTS
$724M
$414K ﹤0.01%
+22,284
New +$460K
BBCQW
667
Bleichroeder Acquisition Corp II Warrants
BBCQW
$412K ﹤0.01%
+433,331
New +$325K
NEXA icon
668
Nexa Resources
NEXA
$1.77B
$412K ﹤0.01%
+38,874
New +$449K
RAC.WS
669
Rithm Acquisition Corp Warrants
RAC.WS
$410K ﹤0.01%
660,000
– –
NWSA icon
670
News Corp Class A
NWSA
$16.6B
$410K ﹤0.01%
16,534
-97,470
-85% -$2.42M
CXM icon
671
Sprinklr
CXM
$1.91B
$410K ﹤0.01%
+68,278
New +$424K
PUBM icon
672
PubMatic
PUBM
$766M
$409K ﹤0.01%
50,026
+14,928
+43% +$115K
SIGI icon
673
Selective Insurance
SIGI
$5.51B
$407K ﹤0.01%
+5,399
New +$442K
LEVI icon
674
Levi Strauss
LEVI
$8.19B
$405K ﹤0.01%
+21,877
New +$448K
CNXN icon
675
PC Connection
CNXN
$2.01B
$404K ﹤0.01%
+6,911
New +$414K
25 26
27
28 29

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IIM
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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.