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 | |
|---|---|---|---|---|---|---|
1101
ProAssurance
PRA
$1.22B
| $79K | ﹤0.01% |
+1,684
| New | +$79K |
|
|
RDUS
1102
DELISTED
Radius Recycling
RDUS
| $79K | ﹤0.01% |
+2,930
| New | +$79K |
|
1103
iShares MSCI BIC ETF
BKF
$93.9M
| $78K | ﹤0.01% |
1,947
-3,198
| -62% | -$128K |
|
1104
DMC Global
BOOM
$145M
| $78K | ﹤0.01% |
+1,921
| New | +$78K |
|
|
VRAY
1105
DELISTED
ViewRay, Inc.
VRAY
| $78K | ﹤0.01% |
8,400
-22,679
| -73% | -$211K |
|
|
CLGX
1106
DELISTED
Corelogic, Inc.
CLGX
| $78K | ﹤0.01% |
1,583
+926
| +141% | +$45.6K |
|
|
JAG
1107
DELISTED
Jagged Peak Energy Inc.
JAG
| $78K | ﹤0.01% |
5,657
-10,555
| -65% | -$146K |
|
|
NXTM
1108
DELISTED
NxStage Medical Inc.
NXTM
| $78K | ﹤0.01% |
+2,800
| New | +$78K |
|
1109
American Superconductor
AMSC
$2.54B
| $77K | ﹤0.01% |
11,162
-27,294
| -71% | -$188K |
|
1110
HealthEquity
HQY
$7.97B
| $77K | ﹤0.01% |
817
+19
| +2% | +$1.79K |
|
1111
Heron Therapeutics
HRTX
$193M
| $77K | ﹤0.01% |
2,461
-35,489
| -94% | -$1.11M |
|
1112
Nordson
NDSN
$12.5B
| $77K | ﹤0.01% |
+557
| New | +$77K |
|
|
AYX
1113
DELISTED
Alteryx, Inc.
AYX
| $77K | ﹤0.01% |
+1,349
| New | +$77K |
|
1114
Barrett Business Services
BBSI
$1.2B
| $76K | ﹤0.01% |
4,560
-2,400
| -34% | -$40K |
|
1115
DXC Technology
DXC
$2.51B
| $76K | ﹤0.01% |
+822
| New | +$76K |
|
1116
Starwood Property Trust
STWD
$7.52B
| $76K | ﹤0.01% |
3,534
+2,816
| +392% | +$60.6K |
|
1117
Liberty Media Series A
FWONA
$22.5B
| $75K | ﹤0.01% |
2,213
-1,977
| -47% | -$67K |
|
1118
Standex International
SXI
$2.47B
| $75K | ﹤0.01% |
726
-337
| -32% | -$34.8K |
|
|
LGCY
1119
DELISTED
Legacy Reserves Inc. Common Stock
LGCY
| $75K | ﹤0.01% |
15,663
+11,323
| +261% | +$54.2K |
|
|
DRYS
1120
DELISTED
DryShips Inc. Common Stock
DRYS
| $75K | ﹤0.01% |
12,387
+5,738
| +86% | +$34.7K |
|
1121
Louisiana-Pacific
LPX
$6.68B
| $74K | ﹤0.01% |
+2,794
| New | +$74K |
|
1122
Telefonica
TEF
$30.3B
| $74K | ﹤0.01% |
11,668
+1,344
| +13% | +$8.52K |
|
1123
ProShares UltraPro S&P 500
UPRO
$4.72B
| $74K | ﹤0.01% |
+2,616
| New | +$74K |
|
1124
ProShares VIX Short-Term Futures ETF
VIXY
$80.7M
| $74K | ﹤0.01% |
43
+33
| +330% | +$56.8K |
|
|
TTOO
1125
DELISTED
T2 Biosystems, Inc
TTOO
| $74K | ﹤0.01% |
2
-8
| -80% | -$296K |
|