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 | |
|---|---|---|---|---|---|---|
|
PEGI
901
DELISTED
Pattern Energy Group Inc. Class A
PEGI
| $99K | ﹤0.01% |
5,783
-18,443
| -76% | -$316K |
|
902
Fabrinet
FN
$12.9B
| $98K | ﹤0.01% |
+3,152
| New | +$98K |
|
903
Oshkosh
OSK
$8.88B
| $98K | ﹤0.01% |
+1,274
| New | +$98K |
|
|
ADMS
904
DELISTED
Adamas Pharmaceuticals, Inc.
ADMS
| $98K | ﹤0.01% |
+4,134
| New | +$98K |
|
|
TFCF
905
DELISTED
Twenty-First Century Fox, Inc. Class B
TFCF
| $98K | ﹤0.01% |
2,706
-21,243
| -89% | -$769K |
|
906
EnerSys
ENS
$4.02B
| $97K | ﹤0.01% |
+1,399
| New | +$97K |
|
907
FS KKR Capital
FSK
$4.99B
| $97K | ﹤0.01% |
+3,354
| New | +$97K |
|
|
ACC
908
DELISTED
American Campus Communities, Inc.
ACC
| $97K | ﹤0.01% |
2,537
+1,830
| +259% | +$70K |
|
|
TIVO
909
DELISTED
Tivo Inc
TIVO
| $97K | ﹤0.01% |
7,193
+870
| +14% | +$11.7K |
|
910
Criteo
CRTO
$1.15B
| $96K | ﹤0.01% |
+3,726
| New | +$96K |
|
911
Neurogene
NGNE
$287M
| $96K | ﹤0.01% |
343
+278
| +428% | +$77.8K |
|
|
AERI
912
DELISTED
Aerie Pharmaceuticals, Inc.
AERI
| $96K | ﹤0.01% |
+1,772
| New | +$96K |
|
|
LXFT
913
DELISTED
Luxoft Holding, Inc.
LXFT
| $96K | ﹤0.01% |
2,364
-5,350
| -69% | -$217K |
|
914
Raymond James Financial
RJF
$34.1B
| $95K | ﹤0.01% |
+1,610
| New | +$95K |
|
915
Merit Medical Systems
MMSI
$5.34B
| $94K | ﹤0.01% |
+2,081
| New | +$94K |
|
916
OraSure Technologies
OSUR
$243M
| $94K | ﹤0.01% |
5,599
+395
| +8% | +$6.63K |
|
917
Team
TISI
$81.4M
| $94K | ﹤0.01% |
691
+638
| +1,204% | +$86.8K |
|
918
Valero Energy
VLO
$49B
| $94K | ﹤0.01% |
1,015
-13,273
| -93% | -$1.23M |
|
|
TTPH
919
DELISTED
Tetraphase Pharmaceuticals, Inc.
TTPH
| $94K | ﹤0.01% |
1,541
-189
| -11% | -$11.5K |
|
920
Axogen
AXGN
$773M
| $93K | ﹤0.01% |
2,560
-17,233
| -87% | -$626K |
|
921
Equinor
EQNR
$61.1B
| $92K | ﹤0.01% |
3,928
+1,996
| +103% | +$46.7K |
|
922
Interpublic Group of Companies
IPG
$9.78B
| $92K | ﹤0.01% |
+4,021
| New | +$92K |
|
923
iShares MSCI India ETF
INDA
$9.4B
| $91K | ﹤0.01% |
+2,687
| New | +$91K |
|
|
MAG
924
DELISTED
MAG Silver
MAG
| $91K | ﹤0.01% |
9,410
-3,194
| -25% | -$30.9K |
|
925
ODP
ODP
$641M
| $91K | ﹤0.01% |
4,263
+4,061
| +2,010% | +$86.7K |
|