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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
RNGR icon
1351
Ranger Energy Services
RNGR
$373M
– –
-19,303
Closed -$270K
ROAD icon
1352
Construction Partners
ROAD
$5.84B
– –
-14,048
Closed -$1.52M
ROP icon
1353
Roper Technologies
ROP
$36.3B
– –
-10,330
Closed -$4.6M
RPD icon
1354
Rapid7
RPD
$634M
– –
-11,512
Closed -$175K
RS icon
1355
Reliance Steel & Aluminium
RS
$20.8B
– –
-4,178
Closed -$1.21M
RSG icon
1356
Republic Services
RSG
$66.7B
– –
-17,113
Closed -$3.63M
RXST icon
1357
RxSight
RXST
$215M
– –
-13,555
Closed -$141K
RYTM icon
1358
Rhythm Pharmaceuticals
RYTM
$7B
– –
-29,598
Closed -$3.17M
SBET icon
1359
Sharplink Inc
SBET
$1.22B
– –
-22,160
Closed -$198K
SCI icon
1360
Service Corp International
SCI
$11.4B
– –
-6,617
Closed -$516K
SCSC icon
1361
Scansource
SCSC
$1.12B
– –
-7,637
Closed -$298K
SEDG icon
1362
SolarEdge
SEDG
$2.59B
– –
-67,288
Closed -$1.94M
SEIC icon
1363
SEI Investments
SEIC
$11.9B
– –
-8,316
Closed -$682K
SENEA icon
1364
Seneca Foods Class A
SENEA
$1.13B
– –
-3,450
Closed -$382K
SFM icon
1365
Sprouts Farmers Market
SFM
$7.04B
– –
-4,730
Closed -$377K
SHAK icon
1366
Shake Shack
SHAK
$2.3B
– –
-34,388
Closed -$2.79M
SHCO
1367
DELISTED
Soho House & Co
SHCO
– –
-2,078,038
Closed -$18.6M
SKWD icon
1368
Skyward Specialty Insurance
SKWD
$2.45B
– –
-5,766
Closed -$295K
SLNO
1369
DELISTED
Soleno Therapeutics
SLNO
– –
-13,946
Closed -$646K
SMBC icon
1370
Southern Missouri Bancorp
SMBC
$855M
– –
-4,201
Closed -$248K
SO icon
1371
Southern Company
SO
$110B
– –
-2,309
Closed -$201K
SR icon
1372
Spire
SR
$4.92B
– –
-5,085
Closed -$421K
SSB icon
1373
SouthState Bank Corp
SSB
$10.4B
– –
-25,579
Closed -$2.41M
SSD icon
1374
Simpson Manufacturing
SSD
$7.98B
– –
-3,640
Closed -$588K
STAA icon
1375
STAAR Surgical
STAA
$1.16B
– –
-2,472,390
Closed -$57.1M
53 54
55
56 57

Similar funds

HI
HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return
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.