Simplex Trading Portfolio holdings
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.
Top Buys
| 1 |
Tesla
TSLA
|
+$27.1M |
| 2 |
Netflix
NFLX
|
+$24.7M |
| 3 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$20.1M |
| 4 |
TWX
Time Warner Inc
TWX
|
+$18.3M |
| 5 |
Alibaba
BABA
|
+$14.8M |
Top Sells
| 1 |
Amazon
AMZN
|
+$71.9M |
| 2 |
Micron Technology
MU
|
+$47.7M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$26.3M |
| 4 |
Boeing
BA
|
+$21M |
| 5 |
Citigroup
C
|
+$19.6M |
Sector Composition
| 1 | Consumer Discretionary | 15.64% |
| 2 | Communication Services | 14.16% |
| 3 | Technology | 12.46% |
| 4 | Financials | 10.94% |
| 5 | Healthcare | 10.33% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
DSKE
976
DELISTED
Daseke, Inc. Common Stock
DSKE
| $78K | ﹤0.01% |
+8,060
| New | +$78K |
|
977
Grand Canyon Education
LOPE
$5.69B
| $77K | ﹤0.01% |
743
+699
| +1,589% | +$72.4K |
|
978
Workday
WDAY
$60.5B
| $77K | ﹤0.01% |
613
+211
| +52% | +$26.5K |
|
|
MDC
979
DELISTED
M.D.C. Holdings, Inc.
MDC
| $77K | ﹤0.01% |
+3,219
| New | +$77K |
|
|
LN
980
DELISTED
LINE Corporation
LN
| $77K | ﹤0.01% |
+1,999
| New | +$77K |
|
|
CNXM
981
DELISTED
CNX Midstream Partners LP
CNXM
| $77K | ﹤0.01% |
+4,226
| New | +$77K |
|
982
Abeona Therapeutics
ABEO
$335M
| $76K | ﹤0.01% |
214
+165
| +337% | +$58.6K |
|
983
Arrowhead Research
ARWR
$3.99B
| $76K | ﹤0.01% |
+10,613
| New | +$76K |
|
984
Flex
FLEX
$21.7B
| $76K | ﹤0.01% |
6,216
+5,831
| +1,515% | +$71.3K |
|
|
LKM
985
DELISTED
Link Motion Inc.
LKM
| $76K | ﹤0.01% |
+46,018
| New | +$76K |
|
986
CNA Financial
CNA
$12.8B
| $75K | ﹤0.01% |
1,539
+187
| +14% | +$9.11K |
|
987
Direxion Daily MSCI India Bull 2X Shares
INDL
$68.2M
| $74K | ﹤0.01% |
914
+856
| +1,476% | +$69.3K |
|
988
Nordic American Tanker
NAT
$675M
| $74K | ﹤0.01% |
38,289
-28,247
| -42% | -$54.6K |
|
989
York Water
YORW
$440M
| $74K | ﹤0.01% |
2,415
+1,636
| +210% | +$50.1K |
|
|
BREW
990
DELISTED
Craft Brew Alliance, Inc.
BREW
| $74K | ﹤0.01% |
+4,014
| New | +$74K |
|
|
MITL
991
DELISTED
Mitel Networks Corporation
MITL
| $74K | ﹤0.01% |
8,044
+4,613
| +134% | +$42.4K |
|
|
APLP
992
DELISTED
Archrock Partners, L.P. Common Units representing Limited Partner Interests
APLP
| $74K | ﹤0.01% |
6,099
-3,030
| -33% | -$36.8K |
|
|
WES
993
DELISTED
Western Gas Partners Lp
WES
| $74K | ﹤0.01% |
1,751
-13,651
| -89% | -$577K |
|
994
Cato Corp
CATO
$89.6M
| $73K | ﹤0.01% |
+4,975
| New | +$73K |
|
995
Calavo Growers
CVGW
$479M
| $73K | ﹤0.01% |
+796
| New | +$73K |
|
996
SPDR S&P Dividend ETF
SDY
$20.6B
| $73K | ﹤0.01% |
+803
| New | +$73K |
|
997
Assembly Biosciences
ASMB
$171M
| $72K | ﹤0.01% |
124
-905
| -88% | -$525K |
|
|
CRESY
998
Cresud
CRESY
$545M
| $72K | ﹤0.01% |
3,955
-2,769
| -41% | -$50.4K |
|
999
Mistras Group
MG
$301M
| $72K | ﹤0.01% |
3,803
-2,021
| -35% | -$38.3K |
|
1000
Primerica
PRI
$8.74B
| $72K | ﹤0.01% |
750
+359
| +92% | +$34.5K |
|