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
$501M
AUM Growth
+$20.4M
Cap. Flow
Cap. Flow %
Top 10 Hldgs %
Holding
3,545
New
Increased
Reduced
Closed

Top Buys

1
+$40.1M
2
+$12.5M
3
+$10.5M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$9.89M
5
INTC icon
Intel
INTC
+$9.83M

Top Sells

1
+$35.7M
2
+$32.3M
3
+$29M
4
BKNG icon
Booking.com
BKNG
+$28.4M
5
BIDU icon
Baidu
BIDU
+$13.3M

Sector Composition

1 Communication Services 13.31%
2 Consumer Discretionary 13.07%
3 Healthcare 12.42%
4 Technology 11.92%
5 Financials 8.28%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
26
$3.15M 0.63%
26,609
+24,045
27
$3.06M 0.61%
20,423
+7,523
28
$2.96M 0.59%
59,038
-151,469
29
$2.93M 0.58%
53,175
-28,110
30
$2.89M 0.58%
+36,123
31
$2.88M 0.57%
+6,826
32
$2.86M 0.57%
70,264
-111,358
33
$2.85M 0.57%
125,426
+123,027
34
$2.83M 0.56%
67,228
+5,826
35
$2.71M 0.54%
61,009
-18,289
36
$2.7M 0.54%
32,819
-13,000
37
$2.63M 0.52%
+22,938
38
$2.6M 0.52%
+37,827
39
$2.58M 0.52%
38,058
+30,682
40
$2.56M 0.51%
+40,248
41
$2.54M 0.51%
+16,935
42
$2.34M 0.47%
+29,522
43
$2.28M 0.45%
58,092
+10,317
44
$2.24M 0.45%
+7,929
45
$2.15M 0.43%
26,246
-6,463
46
$2.1M 0.42%
48,507
+28,924
47
$2.1M 0.42%
+23,215
48
$2.09M 0.42%
+42,460
49
$2.06M 0.41%
8,729
+8,253
50
$2.03M 0.4%
+26,933
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