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
26
$2.6M 0.31%
+61,402
27
$2.58M 0.31%
+35,531
28
$2.47M 0.3%
+16,609
29
$2.46M 0.3%
+249
30
$2.38M 0.29%
+12,449
31
$2.37M 0.29%
+52,821
32
$2.35M 0.29%
+33,443
33
$2.23M 0.27%
+15,613
34
$2.21M 0.27%
+40,360
35
$2.2M 0.27%
+35,125
36
$2.17M 0.26%
+45,166
37
$2.15M 0.26%
+18,080
38
$2.15M 0.26%
+20,588
39
$2.14M 0.26%
+548
40
$2.11M 0.26%
+36,656
41
$2.06M 0.25%
+112,230
42
$2.05M 0.25%
+37,645
43
$2.03M 0.25%
+11,322
44
$1.92M 0.23%
+75,656
45
$1.92M 0.23%
+84,436
46
$1.89M 0.23%
+25,095
47
$1.74M 0.21%
+17,324
48
$1.68M 0.2%
+12,900
49
$1.64M 0.2%
+11,589
50
$1.61M 0.19%
+48,365
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