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
|
+$92M |
| 2 |
Walt Disney
DIS
|
+$25.4M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$12.8M |
| 4 |
Baidu
BIDU
|
+$12.2M |
| 5 |
RHT
Red Hat Inc
RHT
|
+$11.6M |
Top Sells
| 1 |
iShares Russell 2000 ETF
IWM
|
+$61.4M |
| 2 |
Amazon
AMZN
|
+$59.6M |
| 3 |
Alphabet (Google) Class C
GOOG
|
+$35.5M |
| 4 |
Apple
AAPL
|
+$19.6M |
| 5 |
Financial Select Sector SPDR Fund
XLF
|
+$18.2M |
Sector Composition
| 1 | Communication Services | 16.98% |
| 2 | Technology | 12.42% |
| 3 | Healthcare | 10.02% |
| 4 | Consumer Discretionary | 8.53% |
| 5 | Industrials | 6.01% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
MXWL
876
DELISTED
Maxwell Technologies Inc
MXWL
| $105K | ﹤0.01% |
23,634
-143,075
| -86% | -$636K |
|
877
Tower Semiconductor
TSEM
$7.57B
| $104K | ﹤0.01% |
6,318
+437
| +7% | +$7.19K |
|
|
PDCO
878
DELISTED
Patterson Companies, Inc.
PDCO
| $104K | ﹤0.01% |
4,788
+1,592
| +50% | +$34.6K |
|
|
FIT
879
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $104K | ﹤0.01% |
17,641
-17,936
| -50% | -$106K |
|
880
ProShares Ultra Energy
DIG
$72.4M
| $103K | ﹤0.01% |
2,660
+1,200
| +82% | +$46.5K |
|
881
Vanguard Value ETF
VTV
$144B
| $103K | ﹤0.01% |
961
+406
| +73% | +$43.5K |
|
882
Wave Life Sciences
WVE
$1.18B
| $102K | ﹤0.01% |
+2,648
| New | +$102K |
|
883
iShare MSCI Eurozone ETF
EZU
$7.89B
| $101K | ﹤0.01% |
+2,621
| New | +$101K |
|
884
Gerdau
GGB
$6.19B
| $100K | ﹤0.01% |
32,720
-19,435
| -37% | -$59.4K |
|
885
Smith & Wesson
SWBI
$416M
| $100K | ﹤0.01% |
+13,942
| New | +$100K |
|
|
FOE
886
DELISTED
Ferro Corporation
FOE
| $100K | ﹤0.01% |
+5,290
| New | +$100K |
|
|
CCMP
887
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $100K | ﹤0.01% |
897
+26
| +3% | +$2.9K |
|
888
Banco Santander
SAN
$148B
| $99K | ﹤0.01% |
22,453
-11,457
| -34% | -$50.5K |
|
889
Camping World
CWH
$1.06B
| $98K | ﹤0.01% |
7,093
-20,576
| -74% | -$284K |
|
890
Direxion Daily S&P Oil & Gas Exp & Prod Bull 2X Shares
GUSH
$249M
| $98K | ﹤0.01% |
88
-150
| -63% | -$167K |
|
891
Vanguard Information Technology ETF
VGT
$102B
| $98K | ﹤0.01% |
489
-27
| -5% | -$5.41K |
|
|
MDSO
892
DELISTED
Medidata Solutions, Inc.
MDSO
| $98K | ﹤0.01% |
1,344
-5,246
| -80% | -$383K |
|
893
United States Brent Oil Fund
BNO
$103M
| $97K | ﹤0.01% |
5,062
-62,643
| -93% | -$1.2M |
|
894
Chart Industries
GTLS
$8.95B
| $97K | ﹤0.01% |
1,079
+988
| +1,086% | +$88.8K |
|
895
Olympic Steel
ZEUS
$365M
| $97K | ﹤0.01% |
6,126
+1,387
| +29% | +$22K |
|
896
Community Bank
CBU
$3.13B
| $96K | ﹤0.01% |
+1,617
| New | +$96K |
|
897
CSG Systems International
CSGS
$1.82B
| $96K | ﹤0.01% |
2,281
-4,050
| -64% | -$170K |
|
898
abrdn Physical Silver Shares ETF
SIVR
$2.54B
| $96K | ﹤0.01% |
6,589
+5,198
| +374% | +$75.7K |
|
|
SPWR
899
DELISTED
SunPower Corporation Common Stock
SPWR
| $96K | ﹤0.01% |
22,751
+9,411
| +71% | +$39.7K |
|
900
Freshpet
FRPT
$2.61B
| $95K | ﹤0.01% |
+2,267
| New | +$95K |
|