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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
COO icon
551
Cooper Companies
COO
$13.9B
$690K 0.01%
+9,961
New +$788K
XNDU
552
Xanadu Quantum Technologies Class B
XNDU
$3.21B
$689K 0.01%
+90,000
New +$810K
FDUS icon
553
Fidus Investment
FDUS
$749M
$686K 0.01%
+39,390
New +$736K
TMUS icon
554
T-Mobile US
TMUS
$194B
$682K 0.01%
+3,186
New +$654K
APTV icon
555
Aptiv
APTV
$9.56B
$681K 0.01%
10,222
-322
-3% -$24.8K
FUL icon
556
H.B. Fuller
FUL
$3.05B
$681K 0.01%
+11,034
New +$676K
AIG icon
557
American International
AIG
$40.2B
$671K 0.01%
+9,064
New +$693K
CNK icon
558
Cinemark Holdings
CNK
$4.19B
$670K 0.01%
+23,507
New +$602K
MGA icon
559
Magna International
MGA
$17.6B
$665K 0.01%
+12,440
New +$710K
FET icon
560
Forum Energy Technologies
FET
$905M
$664K 0.01%
+11,313
New +$574K
GDYN icon
561
Grid Dynamics Holdings
GDYN
$645M
$658K 0.01%
115,409
+77,213
+202% +$568K
HUBS icon
562
HubSpot
HUBS
$13B
$654K 0.01%
2,679
+1,974
+280% +$554K
MSGE icon
563
Madison Square Garden
MSGE
$3.72B
$654K 0.01%
11,095
+5,043
+83% +$298K
FLOC
564
Flowco Holdings
FLOC
$934M
$653K 0.01%
31,703
+11,890
+60% +$258K
MYRG icon
565
MYR Group
MYRG
$4.62B
$652K 0.01%
+2,311
New +$601K
LFST icon
566
Lifestance Health
LFST
$4.72B
$652K 0.01%
102,342
+46,015
+82% +$320K
IBEX icon
567
IBEX
IBEX
$512M
$650K 0.01%
+24,221
New +$784K
TKR icon
568
Timken Company
TKR
$8.39B
$649K 0.01%
+6,456
New +$642K
QCRH icon
569
QCR Holdings
QCRH
$1.65B
$647K 0.01%
+7,572
New +$659K
IBCP icon
570
Independent Bank Corp
IBCP
$819M
$645K 0.01%
19,375
+9,515
+97% +$327K
NESR
571
National Energy Services Reunited Corp
NESR
$3.5B
$643K 0.01%
+29,971
New +$624K
AORT icon
572
Artivion
AORT
$1.32B
$639K 0.01%
+17,444
New +$688K
AGRO icon
573
Adecoagro
AGRO
$1.55B
$638K 0.01%
+42,471
New +$419K
EXLS icon
574
EXL Service
EXLS
$5.88B
$637K 0.01%
+20,927
New +$722K
CEPO
575
Cantor Equity Partners I
CEPO
$274M
$630K 0.01%
60,000
– –
21 22
23
24 25

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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.