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
$1.51B
AUM Growth
-$75.7M
Cap. Flow
Cap. Flow %
Top 10 Hldgs %
Holding
3,524
New
Increased
Reduced
Closed

Top Buys

1 +$83.1M
2 +$37.2M
3 +$30.5M
4
MU icon
Micron Technology
MU
+$28.8M
5
QCOM icon
Qualcomm
QCOM
+$18.2M

Top Sells

1 +$29.5M
2 +$27.8M
3 +$27.6M
4
BKNG icon
Booking.com
BKNG
+$25.4M
5
T icon
AT&T
T
+$19.6M

Sector Composition

1 Technology 20.65%
2 Communication Services 17.64%
3 Consumer Discretionary 14.77%
4 Healthcare 11.1%
5 Financials 6.35%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake
Capital Flow
1926
-858
1927
-24,848
1928
0
1929
-406
1930
0
1931
-11
1932
-20,491
1933
0
1934
-36,667
1935
$0 ﹤0.01%
249
-315
1936
0
1937
0
1938
0
1939
0
1940
0
1941
-13,498
1942
0
1943
$0 ﹤0.01%
9
-469
1944
0
1945
0
1946
-69,350
1947
-8,233
1948
0
1949
0
1950
0