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 |
Invesco QQQ Trust
QQQ
|
+$41.7M |
| 2 |
Mastercard
MA
|
+$33.6M |
| 3 |
Alibaba
BABA
|
+$33.4M |
| 4 |
Apple
AAPL
|
+$27.9M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$26M |
Top Sells
| 1 |
JPMorgan Chase
JPM
|
+$60M |
| 2 |
TSMC
TSM
|
+$49.5M |
| 3 |
iShares Silver Trust
SLV
|
+$26M |
| 4 |
Amazon
AMZN
|
+$25.2M |
| 5 |
Boeing
BA
|
+$22.1M |
Sector Composition
| 1 | Consumer Discretionary | 23.12% |
| 2 | Technology | 13.05% |
| 3 | Healthcare | 11.53% |
| 4 | Industrials | 7.38% |
| 5 | Communication Services | 6.71% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1051
Interface
TILE
$1.6B
| $182K | ﹤0.01% |
17,344
+15,145
| +689% | +$159K |
|
1052
Amkor Technology
AMKR
$6.27B
| $181K | ﹤0.01% |
12,067
-3,540
| -23% | -$53.1K |
|
|
WLL
1053
DELISTED
Whiting Petroleum Corporation
WLL
| $181K | ﹤0.01% |
+7,274
| New | +$181K |
|
1054
iShares MSCI EAFE Growth ETF
EFG
$13.5B
| $180K | ﹤0.01% |
+1,785
| New | +$180K |
|
1055
Global X Video Games & Esports ETF
HERO
$168M
| $180K | ﹤0.01% |
+5,823
| New | +$180K |
|
1056
WD-40
WDFC
$2.85B
| $180K | ﹤0.01% |
679
+488
| +255% | +$129K |
|
1057
Generac Holdings
GNRC
$10.9B
| $179K | ﹤0.01% |
791
-10,147
| -93% | -$2.3M |
|
1058
GoPro
GPRO
$316M
| $179K | ﹤0.01% |
21,636
-5,514
| -20% | -$45.6K |
|
1059
Gray Television
GTN
$579M
| $178K | ﹤0.01% |
10,000
+8,044
| +411% | +$143K |
|
1060
Inovio Pharmaceuticals
INO
$141M
| $178K | ﹤0.01% |
1,678
+1,661
| +9,771% | +$176K |
|
1061
OraSure Technologies
OSUR
$238M
| $178K | ﹤0.01% |
16,900
-43,584
| -72% | -$459K |
|
|
LORL
1062
DELISTED
Loral Space and Communications, Inc.
LORL
| $178K | ﹤0.01% |
8,483
-13,242
| -61% | -$278K |
|
|
DISCA
1063
DELISTED
Discovery, Inc. Series A Common Stock
DISCA
| $178K | ﹤0.01% |
+5,921
| New | +$178K |
|
|
HIMX
1064
Himax Technologies
HIMX
$1.47B
| $177K | ﹤0.01% |
24,042
+9,821
| +69% | +$72.3K |
|
|
TEN
1065
DELISTED
Tenneco Inc. Class A Voting Common Stock
TEN
| $177K | ﹤0.01% |
16,760
+481
| +3% | +$5.08K |
|
|
CIM
1066
Chimera Investment
CIM
$1.17B
| $176K | ﹤0.01% |
5,739
+3,031
| +112% | +$93K |
|
1067
Karyopharm Therapeutics
KPTI
$53.8M
| $176K | ﹤0.01% |
760
+67
| +10% | +$15.5K |
|
1068
Teucrium Wheat Fund
WEAT
$117M
| $176K | ﹤0.01% |
28,485
-6,092
| -18% | -$37.6K |
|
1069
iShares S&P GSCI Commodity-Indexed Trust
GSG
$992M
| $175K | ﹤0.01% |
+14,257
| New | +$175K |
|
1070
Twist Bioscience
TWST
$1.55B
| $175K | ﹤0.01% |
1,242
+1,045
| +530% | +$147K |
|
1071
Boston Properties
BXP
$11.7B
| $174K | ﹤0.01% |
1,846
-16,455
| -90% | -$1.55M |
|
1072
iShares S&P Mid-Cap 400 Growth ETF
IJK
$9.31B
| $174K | ﹤0.01% |
+2,416
| New | +$174K |
|
1073
SFL Corp
SFL
$1.1B
| $173K | ﹤0.01% |
27,651
+12,402
| +81% | +$77.6K |
|
|
AAT
1074
American Assets Trust
AAT
$1.25B
| $172K | ﹤0.01% |
5,988
+5,932
| +10,593% | +$170K |
|
|
GP
1075
GreenPower Motor Co
GP
$9.63M
| $172K | ﹤0.01% |
+5,921
| New | +$172K |
|