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 |
Apple
AAPL
|
+$35.2M |
| 2 |
Micron Technology
MU
|
+$32.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$29.5M |
| 4 |
NVIDIA
NVDA
|
+$22.9M |
| 5 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22M |
Top Sells
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$33.4M |
| 3 |
Tesla
TSLA
|
+$19.8M |
| 4 |
Netflix
NFLX
|
+$17.7M |
| 5 |
TWTR
Twitter, Inc.
TWTR
|
+$13.5M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15.24% |
| 3 | Communication Services | 12% |
| 4 | Financials | 10.18% |
| 5 | Industrials | 9.87% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
826
Cheniere Energy
LNG
$51.3B
| $160K | ﹤0.01% |
2,456
-35,178
| -93% | -$2.29M |
|
827
Travelzoo
TZOO
$108M
| $160K | ﹤0.01% |
+9,385
| New | +$160K |
|
828
Lesaka Technologies
LSAK
$369M
| $159K | ﹤0.01% |
+17,546
| New | +$159K |
|
829
Quad
QUAD
$338M
| $159K | ﹤0.01% |
+7,639
| New | +$159K |
|
830
Cytosorbents Corp
CTSO
$61.7M
| $158K | ﹤0.01% |
+13,885
| New | +$158K |
|
831
Chart Industries
GTLS
$8.98B
| $158K | ﹤0.01% |
+2,573
| New | +$158K |
|
832
Tile Shop Holdings
TTSH
$282M
| $158K | ﹤0.01% |
20,537
+9,978
| +94% | +$76.8K |
|
833
Grand Canyon Education
LOPE
$5.77B
| $157K | ﹤0.01% |
1,412
+669
| +90% | +$74.4K |
|
834
Global X Silver Miners ETF NEW
SIL
$3.01B
| $157K | ﹤0.01% |
5,469
-5,681
| -51% | -$163K |
|
835
UGI
UGI
$7.37B
| $157K | ﹤0.01% |
3,027
+2,661
| +727% | +$138K |
|
|
EBSB
836
DELISTED
Meridian Bancorp, Inc.
EBSB
| $157K | ﹤0.01% |
8,239
+4,656
| +130% | +$88.7K |
|
|
ARQL
837
DELISTED
Arqule Inc
ARQL
| $156K | ﹤0.01% |
28,248
+13,897
| +97% | +$76.7K |
|
|
GG
838
DELISTED
Goldcorp Inc
GG
| $154K | ﹤0.01% |
11,281
+6,159
| +120% | +$84.1K |
|
839
Direxion Daily Emerging Markets Bull 3X Shares
EDC
$90.1M
| $153K | ﹤0.01% |
1,691
-740
| -30% | -$67K |
|
|
CNR
840
Core Natural Resources, Inc.
CNR
$3.76B
| $153K | ﹤0.01% |
3,997
-1,393
| -26% | -$53.3K |
|
|
DM
841
DELISTED
Dominion Energy Midstream Ptr LP
DM
| $153K | ﹤0.01% |
11,292
+282
| +3% | +$3.82K |
|
|
ERF
842
DELISTED
Enerplus Corporation
ERF
| $152K | ﹤0.01% |
+12,088
| New | +$152K |
|
843
Invesco DB Base Metals Fund
DBB
$122M
| $151K | ﹤0.01% |
+8,602
| New | +$151K |
|
844
Lithia Motors
LAD
$8.71B
| $151K | ﹤0.01% |
1,601
-463
| -22% | -$43.7K |
|
845
First Majestic Silver
AG
$4.61B
| $150K | ﹤0.01% |
19,728
+15,815
| +404% | +$120K |
|
846
VanEck Biotech ETF
BBH
$355M
| $149K | ﹤0.01% |
1,245
+965
| +345% | +$115K |
|
|
BPT
847
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $149K | ﹤0.01% |
5,005
+193
| +4% | +$5.75K |
|
848
Fate Therapeutics
FATE
$111M
| $149K | ﹤0.01% |
13,165
-16,297
| -55% | -$184K |
|
849
Topgolf Callaway Brands
MODG
$1.74B
| $149K | ﹤0.01% |
+7,882
| New | +$149K |
|
850
Natera
NTRA
$23B
| $149K | ﹤0.01% |
+7,922
| New | +$149K |
|