Simplex Trading

Simplex Trading Portfolio holdings

AUM $3.72B
1-Year Est. Return 0.6%
 

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 Quarter Est. Return
1 Year Est. Return
+0.6%
3 Year Est. Return
5 Year Est. Return
10 Year Est. Return
AUM
$481M
AUM Growth
–
Cap. Flow
Cap. Flow %
Top 10 Hldgs %
Holding
2,903
New
Increased
Reduced
Closed

Top Buys

1
+$32.9M
2
+$30.1M
3
+$29M
4
AMZN icon
Amazon
AMZN
+$25.6M
5
BIDU icon
Baidu
BIDU
+$16.2M

Top Sells

No sells this quarter

Sector Composition

1 Consumer Discretionary 23.68%
2 Technology 19.11%
3 Healthcare 14.31%
4 Energy 9.3%
5 Communication Services 8.24%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
51
$1.53M 0.19%
+51,576
52
$1.51M 0.18%
+20,384
53
$1.51M 0.18%
+47,775
54
$1.47M 0.18%
+18,111
55
$1.46M 0.18%
+20,023
56
$1.44M 0.17%
+30,536
57
$1.42M 0.17%
+27,148
58
$1.42M 0.17%
+17,102
59
$1.34M 0.16%
+68,931
60
$1.32M 0.16%
+35,853
61
$1.31M 0.16%
+10,079
62
$1.31M 0.16%
+12,625
63
$1.26M 0.15%
+53,391
64
$1.24M 0.15%
+19,583
65
$1.21M 0.15%
+62,062
66
$1.2M 0.15%
+26,955
67
$1.18M 0.14%
+16,400
68
$1.18M 0.14%
+7,564
69
$1.17M 0.14%
+11,460
70
$1.17M 0.14%
+16,921
71
$1.16M 0.14%
+63,253
72
$1.14M 0.14%
+13,101
73
$1.13M 0.14%
+43,397
74
$1.13M 0.14%
+57,112
75
$1.1M 0.13%
+61,355
1 2
3
4 5