Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Amazon
AMZN
|
+$158M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$69.1M |
| 3 |
Meta Platforms (Facebook)
META
|
+$57.4M |
| 4 |
Citigroup
C
|
+$23.4M |
| 5 |
Goldman Sachs
GS
|
+$23M |
Top Sells
| 1 |
Apple
AAPL
|
+$49.8M |
| 2 |
Berkshire Hathaway Class B
BRK.B
|
+$43.2M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$42.2M |
| 4 |
Micron Technology
MU
|
+$26.1M |
| 5 |
Adobe
ADBE
|
+$21M |
Sector Composition
| 1 | Consumer Discretionary | 20.63% |
| 2 | Communication Services | 16.3% |
| 3 | Technology | 12.42% |
| 4 | Industrials | 9.24% |
| 5 | Healthcare | 8.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
701
Dominion Energy
D
$50.9B
| $248K | ﹤0.01% |
+3,533
| New | +$248K |
|
|
SEI
702
Solaris Energy Infrastructure, Inc.
SEI
$1.37B
| $248K | ﹤0.01% |
13,163
+6,813
| +107% | +$128K |
|
|
B
703
Barrick Mining Corporation
B
$49.9B
| $246K | ﹤0.01% |
22,286
-277
| -1% | -$3.06K |
|
704
Red Robin
RRGB
$120M
| $246K | ﹤0.01% |
+6,146
| New | +$246K |
|
|
LSXMA
705
DELISTED
Liberty Media Corporation Series A Liberty SiriusXM Common Stock
LSXMA
| $246K | ﹤0.01% |
7,847
+7,797
| +15,594% | +$244K |
|
|
GG
706
DELISTED
Goldcorp Inc
GG
| $246K | ﹤0.01% |
24,139
+12,858
| +114% | +$131K |
|
707
Gibraltar Industries
ROCK
$1.83B
| $245K | ﹤0.01% |
5,377
+2,708
| +101% | +$123K |
|
|
CMCM
708
Cheetah Mobile
CMCM
$271M
| $244K | ﹤0.01% |
+4,969
| New | +$244K |
|
709
Liberty Global Class A
LBTYA
$4B
| $244K | ﹤0.01% |
8,458
-9,494
| -53% | -$274K |
|
710
McDonald's
MCD
$220B
| $243K | ﹤0.01% |
1,458
-76,538
| -98% | -$12.8M |
|
711
Axogen
AXGN
$774M
| $242K | ﹤0.01% |
6,569
+5,507
| +519% | +$203K |
|
712
Direxion Daily Healthcare Bull 3X Shares
CURE
$172M
| $242K | ﹤0.01% |
3,646
+3,406
| +1,419% | +$226K |
|
713
FS KKR Capital
FSK
$4.98B
| $241K | ﹤0.01% |
8,574
+6,828
| +391% | +$192K |
|
|
CONN
714
DELISTED
Conn's Inc.
CONN
| $241K | ﹤0.01% |
6,840
+6,769
| +9,534% | +$238K |
|
|
PYX
715
DELISTED
Pyxus International, Inc.
PYX
| $240K | ﹤0.01% |
+10,437
| New | +$240K |
|
|
HIVE
716
DELISTED
AEROHIVE NETWORKS, INC.
HIVE
| $240K | ﹤0.01% |
58,253
+26,267
| +82% | +$108K |
|
|
SCWX
717
DELISTED
SecureWorks Corp Class A Common Stock
SCWX
| $239K | ﹤0.01% |
16,378
+15,531
| +1,834% | +$227K |
|
|
SIVB
718
DELISTED
SVB Financial Group
SIVB
| $239K | ﹤0.01% |
772
-1,173
| -60% | -$363K |
|
719
Halozyme
HALO
$8.97B
| $238K | ﹤0.01% |
13,135
+5,418
| +70% | +$98.2K |
|
720
Pixelworks
PXLW
$67.8M
| $236K | ﹤0.01% |
4,375
-677
| -13% | -$36.5K |
|
721
Prospect Capital
PSEC
$1.29B
| $235K | ﹤0.01% |
32,118
+10,585
| +49% | +$77.4K |
|
|
XLNX
722
DELISTED
Xilinx Inc
XLNX
| $234K | ﹤0.01% |
2,929
-18,214
| -86% | -$1.46M |
|
723
TriNet
TNET
$3.42B
| $233K | ﹤0.01% |
+4,148
| New | +$233K |
|
724
Western Alliance Bancorporation
WAL
$9.85B
| $233K | ﹤0.01% |
4,107
+2,064
| +101% | +$117K |
|
|
HEES
725
DELISTED
H&E Equipment Services
HEES
| $232K | ﹤0.01% |
6,148
+4,948
| +412% | +$187K |
|