Simplex Trading

Simplex Trading Portfolio holdings

AUM $3.56B
1-Year Est. Return 50.35%
 

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.

This Fund
S&P 500
This Quarter Est. Return
1 Year Est. Return
+50.35%
3 Year Est. Return
5 Year Est. Return
10 Year Est. Return
AUM
$1.14B
AUM Growth
-$562M
Cap. Flow
Cap. Flow %
Top 10 Hldgs %
Holding
3,606
New
Increased
Reduced
Closed

Top Buys

1
+$58.5M
2
+$56.5M
3
+$44.1M
4
AAPL icon
Apple
AAPL
+$20.3M
5
XOP icon
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
+$12.7M

Top Sells

1
+$109M
2
+$62.3M
3
+$36.2M
4
GS icon
Goldman Sachs
GS
+$27.1M
5
BA icon
Boeing
BA
+$24.7M

Sector Composition

1 Communication Services 14.74%
2 Consumer Discretionary 14.32%
3 Technology 11.86%
4 Financials 7.38%
5 Industrials 6.45%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
101
$1.96M 0.17%
13,753
-2,142
102
$1.96M 0.17%
21,075
+18,409
103
$1.96M 0.17%
80,692
-59,075
104
$1.93M 0.17%
31,062
+24,040
105
$1.91M 0.17%
+55,884
106
$1.86M 0.16%
20,292
+7,248
107
$1.83M 0.16%
82,027
+21,117
108
$1.83M 0.16%
+157,510
109
$1.81M 0.16%
33,512
+17,823
110
$1.81M 0.16%
175,263
+8,132
111
$1.78M 0.16%
64,942
+57,066
112
$1.78M 0.16%
13,973
+9,430
113
$1.77M 0.15%
23,184
+7,005
114
$1.75M 0.15%
84,938
+84,170
115
$1.75M 0.15%
12,007
+5,135
116
$1.74M 0.15%
37,555
+8,342
117
$1.74M 0.15%
57,535
+9,425
118
$1.74M 0.15%
160,064
+78,667
119
$1.72M 0.15%
98,143
+74,602
120
$1.71M 0.15%
61,326
-5,774
121
$1.71M 0.15%
15,073
-9,075
122
$1.7M 0.15%
306,240
+231,915
123
$1.7M 0.15%
27,423
+12,759
124
$1.67M 0.15%
81,924
+68,293
125
$1.64M 0.14%
34,185
+3,257
3 4
5
6 7