2026 Q1 Portfolio Activity
In 2026 Q1, Magnetar Financial LLC maintained a portfolio of 1503 distinct positions. The most significant new addition was PENUMBRA INC, now representing 0.84% of the total fund value. They heavily accumulated shares in WEBSTER FINL CORP, increasing the position by 14912.0%. Conversely, Magnetar Financial LLC completely exited their position in COMERICA INC.
Position History
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Total Positions
1503
Quarter
2026 Q1
Top Holding
CRWV (48.2%)
Top 10 Concentration
55.7%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 1503
Magnetar Financial LLC Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
CRWV
COREWEAVE INC
|
Technology | 48.17% | 47.84% |
#1
Prev: #1
|
6.5 |
—
|
375,000 | 0.5% |
P
S
|
68,566,394 | $4,742,379,133 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
AL
AIR LEASE CORP
|
Industrials | 0.89% | 1.00% |
#2
1
Prev: #3
|
2.4 |
—
|
-244,570 | -15.4% |
P
S
|
1,342,230 | $87,164,416 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
GTLS
CHART INDS INC
|
Industrials | 0.88% | 1.01% |
#3
1
Prev: #2
|
1.9 |
—
|
-81,101 | -16.2% |
P
S
|
420,404 | $86,918,527 | 2010 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
TXNM
TXNM ENERGY INC
|
Utilities | 0.88% | 0.98% |
#4
Prev: #4
|
1.4 |
—
|
-223,823 | -13.2% |
P
S
|
1,475,138 | $86,236,568 | 2011 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
PEN
PENUMBRA INC
|
Healthcare | 0.84% | — |
#5
Prev: #—
|
4.3 |
—
|
251,433 | — |
NEW
|
251,433 | $82,563,055 | 2019 Q3 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
WBD
WARNER BROS DIS...
|
Communication Services | 0.83% | 0.90% |
#6
2
Prev: #8
|
0.8 |
—
|
-166,061 | -5.2% |
P
S
|
3,017,092 | $81,733,023 | 2009 Q4 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
PRA
PROASSURANCE CO...
|
Financial Services | 0.82% | 0.82% |
#7
7
Prev: #14
|
0.8 |
—
|
-238,128 | -6.8% |
P
S
|
3,246,435 | $80,251,873 | 2009 Q4 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
KVUE
KENVUE INC
|
Consumer Defensive | 0.81% | 0.89% |
#8
1
Prev: #9
|
0.8 |
—
|
-658,305 | -12.5% |
P
S
|
4,605,598 | $79,400,509 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
WBS
WEBSTER FINL CO...
|
Financial Services | 0.80% | 0.00% |
#9
558
Prev: #567
|
3.3 |
—
|
1,129,140 | 14912.0% |
P
S
|
1,136,712 | $78,910,547 | 2009 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
AAUCD
ALLIED GOLD COR...
|
Unknown | 0.79% | — |
#10
Prev: #—
|
3.8 |
—
|
2,518,867 | — |
NEW
|
2,518,867 | $78,092,329 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
NSC
NORFOLK SOUTHN ...
|
Industrials | 0.79% | 0.97% |
#11
6
Prev: #5
|
0.3 |
—
|
-68,823 | -20.0% |
P
S
|
275,161 | $77,686,206 | 2007 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
TECK
TECK RESOURCES ...
|
Basic Materials | 0.79% | 0.88% |
#12
2
Prev: #10
|
0.3 |
—
|
-384,120 | -20.4% |
P
S
|
1,497,834 | $77,512,910 | 2009 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
MASI
MASIMO CORP
|
Healthcare | 0.77% | 0.01% |
#13
480
Prev: #493
|
3.3 |
—
|
421,626 | 7729.2% |
P
S
|
427,081 | $75,964,897 | 2011 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
N/A
JD.COM INC
|
|
Bond/Debt | 0.76% | 0.58% |
#14
7
Prev: #21
|
2.8 |
—
|
15,945,000 | 27.1% |
P
S
|
74,694,000 | $74,564,846 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
N/A
TRIP COM GROUP ...
|
|
Bond/Debt | 0.73% | 0.75% |
#15
2
Prev: #17
|
2.3 |
—
|
7,000,000 | 11.2% |
P
S
|
69,425,000 | $71,594,531 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
DBRG
DIGITALBRIDGE G...
|
Financial Services | 0.66% | 0.33% |
#16
25
Prev: #41
|
3.3 |
—
|
2,011,839 | 91.3% |
P
S
|
4,215,748 | $65,006,834 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
CSGS
CSG SYS INTL IN...
|
Technology | 0.66% | 0.60% |
#17
3
Prev: #20
|
0.8 |
—
|
3,082 | 0.4% |
P
S
|
807,431 | $64,546,034 | 2010 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
N/A
PG&E CORP
|
|
Bond/Debt | 0.62% | 0.38% |
#18
20
Prev: #38
|
3.2 |
—
|
21,500,000 | 57.3% |
P
S
|
59,021,000 | $61,251,226 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
HPE/PRC
HEWLETT PACKARD...
|
Unknown | 0.61% | 0.33% |
#19
23
Prev: #42
|
3.2 |
—
|
425,000 | 85.0% |
P
S
|
925,000 | $60,259,125 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
MCHPP
MICROCHIP TECHN...
|
Technology | 0.60% | — |
#20
Prev: #—
|
3.7 |
—
|
1,025,000 | — |
NEW
|
1,025,000 | $58,940,062 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
FOLD
AMICUS THERAPEU...
|
Healthcare | 0.59% | 0.55% |
#21
2
Prev: #23
|
0.7 |
—
|
18,143 | 0.5% |
P
S
|
3,986,058 | $57,638,399 | 2021 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
TPH
TRI POINTE HOME...
|
Consumer Cyclical | 0.56% | 0.02% |
#22
317
Prev: #339
|
3.2 |
—
|
1,121,833 | 1684.1% |
P
S
|
1,188,448 | $55,536,175 | 2016 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
SLAB
SILICON LABORAT...
|
Technology | 0.52% | — |
#23
Prev: #—
|
3.7 |
—
|
245,824 | — |
NEW
|
245,824 | $51,168,265 | 2005 Q4 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
WTRG
ESSENTIAL UTILS...
|
Utilities | 0.49% | 0.45% |
#24
5
Prev: #29
|
0.7 |
—
|
4,595 | 0.4% |
P
S
|
1,203,685 | $48,472,395 | 2020 Q3 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
VAL
VALARIS LTD
|
Energy | 0.49% | 0.00% |
#25
576
Prev: #601
|
3.2 |
—
|
479,264 | 5972.1% |
P
S
|
487,289 | $47,773,813 | 2010 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
NSA
NATIONAL STORAG...
|
Real Estate | 0.47% | — |
#26
Prev: #—
|
3.7 |
—
|
1,228,472 | — |
NEW
|
1,228,472 | $46,362,533 | 2016 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
N/A
ALIBABA GROUP H...
|
|
Bond/Debt | 0.46% | 0.66% |
#27
8
Prev: #19
|
0.2 |
—
|
-10,500,000 | -24.3% |
P
S
|
32,736,000 | $45,495,408 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
ACLX
ARCELLX INC
|
Healthcare | 0.46% | — |
#28
Prev: #—
|
3.7 |
—
|
394,931 | — |
NEW
|
394,931 | $45,345,977 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
UNF
UNIFIRST CORP M...
|
Industrials | 0.44% | — |
#29
Prev: #—
|
3.7 |
—
|
171,873 | — |
NEW
|
171,873 | $43,241,528 | 2016 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
VECO
VEECO INSTRS IN...
|
Technology | 0.44% | 0.47% |
#30
2
Prev: #28
|
0.2 |
—
|
-424,820 | -25.1% |
P
S
|
1,266,626 | $42,887,957 | 2015 Q4 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
QRVO
QORVO INC
|
Technology | 0.43% | 0.45% |
#31
1
Prev: #30
|
0.7 |
—
|
-1,592 | -0.3% |
P
S
|
541,194 | $41,888,416 | 2017 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
THR
THERMON GROUP H...
|
Industrials | 0.39% | — |
#32
Prev: #—
|
3.7 |
—
|
757,996 | — |
NEW
|
757,996 | $38,202,998 | 2011 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
LBRDK
LIBERTY BROADBA...
|
Communication Services | 0.37% | 0.35% |
#33
6
Prev: #39
|
0.6 |
—
|
-14,054 | -1.9% |
P
S
|
723,751 | $36,404,675 | 2014 Q4 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
APLS
APELLIS PHARMAC...
|
Healthcare | 0.36% | — |
#34
Prev: #—
|
3.6 |
—
|
869,229 | — |
NEW
|
869,229 | $34,969,082 | 2021 Q4 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
SKYT
SKYWATER TECHNO...
|
Technology | 0.33% | — |
#35
Prev: #—
|
3.6 |
—
|
1,175,584 | — |
NEW
|
1,175,584 | $32,222,758 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
IMXI
INTERNATIONAL M...
|
Technology | 0.31% | 0.29% |
#36
10
Prev: #46
|
0.6 |
—
|
7,839 | 0.4% |
P
S
|
1,924,410 | $30,405,678 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
N/A
ORACLE CORP
|
|
Unknown | 0.30% | — |
#37
Prev: #—
|
3.6 |
—
|
650,000 | — |
NEW
|
650,000 | $29,817,692 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
STEL
STELLAR BANCORP...
|
Financial Services | 0.30% | — |
#38
Prev: #—
|
3.6 |
—
|
812,216 | — |
NEW
|
812,216 | $29,735,228 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
CTLP
CANTALOUPE INC
|
Technology | 0.29% | 0.38% |
#39
2
Prev: #37
|
0.1 |
—
|
-973,937 | -26.7% |
P
S
|
2,680,584 | $28,977,113 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
SNCY
SUN CTRY AIRLS ...
|
Industrials | 0.29% | — |
#40
Prev: #—
|
3.6 |
—
|
1,715,845 | — |
NEW
|
1,715,845 | $28,345,760 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
N/A
CHURCHILL CAP C...
|
|
Unknown | 0.28% | — |
#41
Prev: #—
|
3.6 |
—
|
2,700,000 | — |
NEW
|
2,700,000 | $27,405,000 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
N/A
DRUGS MADE IN A...
|
|
Unknown | 0.27% | 0.26% |
#42
7
Prev: #49
|
1.1 |
—
|
no change | no change |
P
S
|
2,700,000 | $26,946,000 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
N/A
NOVANTA INC
|
|
Unknown | 0.27% | 0.05% |
#43
134
Prev: #177
|
3.1 |
—
|
400,000 | 400.0% |
P
S
|
500,000 | $26,780,964 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
N/A
EQV VENTURES AC...
|
|
Unknown | 0.26% | 0.25% |
#44
7
Prev: #51
|
1.1 |
—
|
no change | no change |
P
S
|
2,499,993 | $25,199,929 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
N/A
TITAN ACQUISITI...
|
|
Unknown | 0.23% | 0.22% |
#45
9
Prev: #54
|
1.1 |
—
|
no change | no change |
P
S
|
2,200,000 | $22,748,000 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
N/A
NEXTERA ENERGY ...
|
|
Unknown | 0.23% | — |
#46
Prev: #—
|
3.6 |
—
|
450,000 | — |
NEW
|
450,000 | $22,637,773 | — | 13F Filing | 2026-03-31 | 2026-05-13 | ||
|
TALK
TALKSPACE INC
|
Healthcare | 0.22% | — |
#47
Prev: #—
|
3.6 |
—
|
4,258,633 | — |
NEW
|
4,258,633 | $22,038,426 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
RPT
RITHM PPTY TR I...
|
Real Estate | 0.22% | 0.27% |
#48
Prev: #48
|
1.1 |
—
|
no change | no change |
P
S
|
1,639,033 | $21,946,652 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
LPBB
LAUNCH TWO ACQU...
|
Financial Services | 0.21% | 0.20% |
#49
7
Prev: #56
|
1.1 |
—
|
no change | no change |
P
S
|
1,980,000 | $21,027,600 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 | |||
|
LPAA
LAUNCH ONE ACQU...
|
Financial Services | 0.21% | 0.20% |
#50
7
Prev: #57
|
1.1 |
—
|
no change | no change |
P
S
|
1,945,196 | $20,871,953 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-13 |
Showing 1-50 of 1503 holdings