2026 Q3 Portfolio Activity
In 2026 Q3, Magnetar Financial LLC maintained a portfolio of 1859 distinct positions. The most significant new addition was SAFETY INS GROUP INC, now representing 0.63% of the total fund value. They heavily accumulated shares in JD.COM INC, increasing the position by 111412.0%. Conversely, Magnetar Financial LLC completely exited their position in WEBSTER FINL CORP.
Position History
hover any row below to update
Loading…
Total Positions
1859
Quarter
2026 Q3
Top Holding
CRWV (40.7%)
Top 10 Concentration
47.8%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 1859
Magnetar Financial LLC Full Holdings List — 2026 Q3
| 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 | 40.67% | 47.26% |
#1
Prev: #1
|
6.5 |
—
|
-4,376,261 | -8.4% |
P
S
|
47,686,666 | $4,154,462,342 |
$37.24
+42.7%
|
2025 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
TXNM
TXNM ENERGY INC
|
Utilities | 0.83% | 0.75% |
#2
7
Prev: #9
|
2.8 |
—
|
no change | no change |
P
S
|
1,448,220 | $84,460,191 |
$40.79
+44.0%
|
2011 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
ACA
ARCOSA INC
|
Industrials | 0.82% | 0.42% |
#3
33
Prev: #36
|
4.3 |
—
|
256,270 | 81.0% |
P
S
|
572,537 | $83,676,283 |
$142.71
+4.5%
|
2025 Q3 | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
TECK
TECK RESOURCES ...
|
Basic Materials | 0.81% | 0.72% |
#4
7
Prev: #11
|
1.3 |
—
|
-73,231 | -5.5% |
P
S
|
1,256,976 | $82,696,451 | 2009 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
JD.COM INC
|
|
Bond/Debt | 0.80% | 0.78% |
#5
2
Prev: #7
|
1.3 |
—
|
-3,000,000 | -3.5% |
P
S
|
83,634,000 | $82,124,823 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
KVUE
KENVUE INC
|
Consumer Defensive | 0.80% | 0.80% |
#6
2
Prev: #4
|
1.3 |
—
|
no change | no change |
P
S
|
4,615,344 | $81,506,975 | 2023 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
PEN
PENUMBRA INC
|
Healthcare | 0.80% | 0.74% |
#7
3
Prev: #10
|
1.3 |
—
|
no change | no change |
P
S
|
255,841 | $81,444,424 | 2019 Q3 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
NSC
NORFOLK SOUTHN ...
|
Industrials | 0.78% | 0.79% |
#8
2
Prev: #6
|
0.8 |
—
|
-18,804 | -6.8% |
P
S
|
256,411 | $79,230,999 | 2007 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
ROKU
ROKU INC
|
Communication Services | 0.76% | 0.64% |
#9
7
Prev: #16
|
1.3 |
—
|
no change | no change |
P
S
|
507,080 | $77,218,143 | 2020 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
WBD
WARNER BROS DIS...
|
Communication Services | 0.74% | 0.67% |
#10
5
Prev: #15
|
0.8 |
—
|
-313,371 | -11.4% |
P
S
|
2,434,513 | $75,348,178 | 2009 Q4 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
D
DOMINION ENERGY...
|
Utilities | 0.72% | 0.76% |
#11
3
Prev: #8
|
1.3 |
—
|
no change | no change |
P
S
|
1,219,394 | $73,797,725 | 2006 Q3 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
MCHPP
MICROCHIP TECHN...
|
Technology | 0.70% | 0.69% |
#12
Prev: #12
|
2.3 |
—
|
100,000 | 10.2% |
P
S
|
1,082,230 | $71,978,968 | 2026 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
FIRSTENERGY COR...
|
|
Bond/Debt | 0.67% | 0.56% |
#13
6
Prev: #19
|
2.3 |
—
|
9,503,000 | 16.8% |
P
S
|
66,003,000 | $68,001,879 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
TRIP COM GROUP ...
|
|
Bond/Debt | 0.64% | 0.53% |
#14
6
Prev: #20
|
2.3 |
—
|
8,700,000 | 14.9% |
P
S
|
67,145,000 | $65,576,559 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
ALIBABA GROUP H...
|
|
Bond/Debt | 0.63% | 0.68% |
#15
1
Prev: #14
|
0.8 |
—
|
-11,500,000 | -18.2% |
P
S
|
51,677,000 | $64,453,523 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
SAFT
SAFETY INS GROU...
|
Financial Services | 0.63% | — |
#16
Prev: #—
|
3.8 |
—
|
619,708 | — |
NEW
|
619,708 | $64,189,355 | 2016 Q4 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
QRVO
QORVO INC
|
Technology | 0.61% | 0.47% |
#17
11
Prev: #28
|
1.2 |
—
|
no change | no change |
P
S
|
548,149 | $62,752,098 | 2017 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
ATKR
ATKORE INC
|
Industrials | 0.59% | 0.00% |
#18
638
Prev: #656
|
3.2 |
—
|
630,675 | 11111.3% |
P
S
|
636,351 | $60,294,257 | 2017 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
MKTX
MARKETAXESS HLD...
|
Financial Services | 0.58% | — |
#19
Prev: #—
|
3.7 |
—
|
361,770 | — |
NEW
|
361,770 | $59,301,338 | 2011 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
HPE/PRC
HEWLETT PACKARD...
|
Unknown | 0.56% | 0.81% |
#20
18
Prev: #2
|
0.2 |
—
|
-410,000 | -53.9% |
P
S
|
350,010 | $57,270,386 | 2025 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
DUKE ENERGY COR...
|
|
Unknown | 0.55% | — |
#21
Prev: #—
|
3.7 |
—
|
1,160,000 | — |
NEW
|
1,160,000 | $55,797,856 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
SLAB
SILICON LABORAT...
|
Technology | 0.54% | 0.50% |
#22
1
Prev: #23
|
1.2 |
—
|
no change | no change |
P
S
|
251,225 | $55,666,436 | 2005 Q4 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
TECH
BIO-TECHNE CORP
|
Healthcare | 0.54% | 0.49% |
#23
1
Prev: #24
|
1.2 |
—
|
no change | no change |
P
S
|
761,911 | $55,215,690 | 2010 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
PAYO
PAYONEER GLOBAL...
|
Technology | 0.52% | 0.46% |
#24
5
Prev: #29
|
0.7 |
—
|
291,185 | 4.1% |
P
S
|
7,401,053 | $52,843,518 | 2022 Q4 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
CZR
CAESARS ENTERTA...
|
Consumer Cyclical | 0.51% | 0.48% |
#25
1
Prev: #26
|
1.2 |
—
|
no change | no change |
P
S
|
1,746,938 | $51,796,712 | 2012 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
RAMP
LIVERAMP HLDGS ...
|
Technology | 0.51% | 0.47% |
#26
1
Prev: #27
|
1.2 |
—
|
no change | no change |
P
S
|
1,379,116 | $51,744,433 | 2024 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
BRUKER CORP
|
|
Preferred | 0.51% | 0.44% |
#27
4
Prev: #31
|
1.2 |
—
|
no change | no change |
P
S
|
108,963 | $51,660,044 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
SUPER MICRO COM...
|
|
Unknown | 0.48% | 0.27% |
#28
15
Prev: #43
|
2.7 |
—
|
150,000 | 26.3% |
P
S
|
720,680 | $49,451,317 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
WTRG
ESSENTIAL UTILS...
|
Utilities | 0.48% | 0.44% |
#29
3
Prev: #32
|
1.2 |
—
|
no change | no change |
P
S
|
1,258,246 | $49,310,660 | 2020 Q3 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
NEXTERA ENERGY ...
|
|
Unknown | 0.47% | 0.24% |
#30
18
Prev: #48
|
3.2 |
—
|
569,154 | 103.5% |
P
S
|
1,119,154 | $48,040,943 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
IRDM
IRIDIUM COMMUNI...
|
Communication Services | 0.44% | 0.08% |
#31
169
Prev: #200
|
3.2 |
—
|
788,746 | 514.9% |
P
S
|
941,932 | $45,118,543 | 2009 Q4 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
UNF
UNIFIRST CORP M...
|
Industrials | 0.43% | 0.42% |
#32
3
Prev: #35
|
1.2 |
—
|
no change | no change |
P
S
|
174,619 | $43,745,552 | 2016 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
SYNA
SYNAPTICS INC
|
Technology | 0.42% | 0.16% |
#33
43
Prev: #76
|
3.2 |
—
|
277,564 | 191.5% |
P
S
|
422,512 | $42,840,604 | 2009 Q3 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
NCL CORP LTD
|
|
Bond/Debt | 0.42% | — |
#34
Prev: #—
|
3.7 |
—
|
50,834,000 | — |
NEW
|
50,834,000 | $42,749,472 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
BLFS
BIOLIFE SOLUTIO...
|
Healthcare | 0.42% | — |
#35
Prev: #—
|
3.7 |
—
|
1,094,482 | — |
NEW
|
1,094,482 | $42,520,626 | 2026 Q3 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
NOVANTA INC
|
|
Unknown | 0.42% | 0.44% |
#36
3
Prev: #33
|
1.2 |
—
|
no change | no change |
P
S
|
700,563 | $42,405,577 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
NORTHERN OIL & ...
|
|
Bond/Debt | 0.39% | 0.13% |
#37
72
Prev: #109
|
3.2 |
—
|
25,518,000 | 170.1% |
P
S
|
40,518,000 | $40,306,511 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
VAL
VALARIS LTD
|
Energy | 0.38% | 0.33% |
#38
2
Prev: #40
|
1.2 |
—
|
no change | no change |
P
S
|
494,010 | $38,789,665 | 2010 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
OGN
ORGANON & CO
|
Healthcare | 0.38% | 0.35% |
#39
1
Prev: #38
|
1.2 |
—
|
no change | no change |
P
S
|
2,810,019 | $38,497,260 | 2021 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
CHURCHILL CAP C...
|
|
Unknown | 0.35% | — |
#40
Prev: #—
|
3.6 |
—
|
3,450,000 | — |
NEW
|
3,450,000 | $36,259,500 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
ALPHABET INC
|
|
Unknown | 0.35% | — |
#41
Prev: #—
|
3.6 |
—
|
742,750 | — |
NEW
|
742,750 | $36,107,206 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
ALLIANT ENERGY ...
|
|
Bond/Debt | 0.35% | 0.43% |
#42
8
Prev: #34
|
0.6 |
—
|
-7,689,000 | -17.7% |
P
S
|
35,786,000 | $35,832,474 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
BA/PRA
BOEING CO
|
Preferred | 0.34% | — |
#43
Prev: #—
|
3.6 |
—
|
590,000 | — |
NEW
|
590,000 | $34,809,008 | 2025 Q2 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
COINBASE GLOBAL...
|
|
Bond/Debt | 0.31% | — |
#44
Prev: #—
|
3.6 |
—
|
35,133,000 | — |
NEW
|
35,133,000 | $31,523,405 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
HZO
MARINEMAX INC
|
Consumer Cyclical | 0.30% | — |
#45
Prev: #—
|
3.6 |
—
|
581,327 | — |
NEW
|
581,327 | $30,403,402 | 2006 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
ALB/PRA
ALBEMARLE CORP
|
Unknown | 0.29% | 0.11% |
#46
76
Prev: #122
|
3.1 |
—
|
430,000 | 189.2% |
P
S
|
657,275 | $29,978,313 | 2024 Q1 | 13F Filing | 2026-09-30 | 2026-11-13 | |||
|
N/A
B&R TECHNOLOGY ...
|
|
Unknown | 0.29% | — |
#47
Prev: #—
|
3.6 |
—
|
2,999,991 | — |
NEW
|
2,999,991 | $29,429,912 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
CHURCHILL CAP C...
|
|
Unknown | 0.28% | 0.26% |
#48
3
Prev: #45
|
1.1 |
—
|
no change | no change |
P
S
|
2,700,000 | $28,809,000 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
N/A
DRUGS MADE IN A...
|
|
Unknown | 0.27% | 0.25% |
#49
3
Prev: #46
|
1.1 |
—
|
no change | no change |
P
S
|
2,700,000 | $27,513,000 | — | 13F Filing | 2026-09-30 | 2026-11-13 | ||
|
DV
DOUBLEVERIFY HL...
|
Communication Services | 0.26% | 0.00% |
#50
648
Prev: #698
|
3.1 |
—
|
1,906,519 | 5443.8% |
P
S
|
1,941,541 | $26,191,388 | 2009 Q4 | 13F Filing | 2026-09-30 | 2026-11-13 |
Showing 1-50 of 1859 holdings