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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
RNGR icon
1351
Ranger Energy Services
RNGR
$383M
– –
-19,303
Closed -$270K
ROAD icon
1352
Construction Partners
ROAD
$6.51B
– –
-14,048
Closed -$1.52M
ROP icon
1353
Roper Technologies
ROP
$41.8B
– –
-10,330
Closed -$4.6M
RPD icon
1354
Rapid7
RPD
$910M
– –
-11,512
Closed -$175K
RS icon
1355
Reliance Steel & Aluminium
RS
$20B
– –
-4,178
Closed -$1.21M
RSG icon
1356
Republic Services
RSG
$67.1B
– –
-17,113
Closed -$3.63M
RXST icon
1357
RxSight
RXST
$275M
– –
-13,555
Closed -$141K
RYTM icon
1358
Rhythm Pharmaceuticals
RYTM
$7.75B
– –
-29,598
Closed -$3.17M
SBET icon
1359
Sharplink Inc
SBET
$1.93B
– –
-22,160
Closed -$198K
SCI icon
1360
Service Corp International
SCI
$11.4B
– –
-6,617
Closed -$516K
SCSC icon
1361
Scansource
SCSC
$1.18B
– –
-7,637
Closed -$298K
SEDG icon
1362
SolarEdge
SEDG
$2.06B
– –
-67,288
Closed -$1.94M
SEIC icon
1363
SEI Investments
SEIC
$13.4B
– –
-8,316
Closed -$682K
SENEA icon
1364
Seneca Foods Class A
SENEA
$1.3B
– –
-3,450
Closed -$382K
SFM icon
1365
Sprouts Farmers Market
SFM
$7.56B
– –
-4,730
Closed -$377K
SHAK icon
1366
Shake Shack
SHAK
$2.85B
– –
-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
$2.34B
– –
-5,766
Closed -$295K
SLNO
1369
DELISTED
Soleno Therapeutics
SLNO
– –
-13,946
Closed -$646K
SMBC icon
1370
Southern Missouri Bancorp
SMBC
$818M
– –
-4,201
Closed -$248K
SO icon
1371
Southern Company
SO
$102B
– –
-2,309
Closed -$201K
SR icon
1372
Spire
SR
$4.88B
– –
-5,085
Closed -$421K
SSB icon
1373
SouthState Bank Corp
SSB
$10.3B
– –
-25,579
Closed -$2.41M
SSD icon
1374
Simpson Manufacturing
SSD
$7.48B
– –
-3,640
Closed -$588K
STAA icon
1375
STAAR Surgical
STAA
$1.12B
– –
-2,472,390
Closed -$57.1M
53 54
55
56 57

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.