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 |
SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$32.1M |
| 2 |
PARA
Paramount Global Class B
PARA
|
+$23.3M |
| 3 |
Pinduoduo
PDD
|
+$17.3M |
| 4 |
Pfizer
PFE
|
+$16.8M |
| 5 |
American Airlines Group
AAL
|
+$14.5M |
Top Sells
| 1 |
Amazon
AMZN
|
+$64.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$38.1M |
| 3 |
AutoZone
AZO
|
+$32.2M |
| 4 |
SPDR S&P 500 ETF Trust
SPY
|
+$25.3M |
| 5 |
Apple
AAPL
|
+$22.5M |
Sector Composition
| 1 | Technology | 20.25% |
| 2 | Consumer Discretionary | 15.22% |
| 3 | Healthcare | 10.03% |
| 4 | Financials | 9.2% |
| 5 | Industrials | 9.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
AIOT
1051
PowerFleet, Inc. Common Stock
AIOT
$710M
| $218K | ﹤0.01% |
26,571
+11,070
| +71% | +$90.8K |
|
|
CHS
1052
DELISTED
Chicos FAS, Inc.
CHS
| $217K | ﹤0.01% |
65,836
-70,442
| -52% | -$232K |
|
1053
iShares MSCI United Kingdom ETF
EWU
$2.94B
| $216K | ﹤0.01% |
+6,901
| New | +$216K |
|
1054
Oppenheimer Holdings
OPY
$799M
| $216K | ﹤0.01% |
5,406
-3,152
| -37% | -$126K |
|
|
AY
1055
DELISTED
Atlantica Sustainable Infrastructure plc Ordinary Shares
AY
| $216K | ﹤0.01% |
5,899
-2,679
| -31% | -$98.1K |
|
|
CGRO
1056
DELISTED
Collective Growth Corporation Class A Common Stock
CGRO
| $216K | ﹤0.01% |
21,704
-11,997
| -36% | -$119K |
|
1057
8x8 Inc
EGHT
$290M
| $215K | ﹤0.01% |
6,636
-9,827
| -60% | -$318K |
|
1058
Dorian LPG
LPG
$1.32B
| $214K | ﹤0.01% |
16,350
+15,113
| +1,222% | +$198K |
|
1059
Vistra
VST
$70.4B
| $214K | ﹤0.01% |
12,155
-169
| -1% | -$2.98K |
|
1060
YPF
YPF
$11.3B
| $214K | ﹤0.01% |
+52,219
| New | +$214K |
|
1061
Anywhere Real Estate
HOUS
$738M
| $213K | ﹤0.01% |
+14,094
| New | +$213K |
|
1062
NOV
NOV
$4.91B
| $212K | ﹤0.01% |
15,492
-1,307
| -8% | -$17.9K |
|
|
AMBR
1063
Amber International Holding Limited American Depositary Shares
AMBR
$399M
| $212K | ﹤0.01% |
1,809
+1,709
| +1,709% | +$200K |
|
1064
International Seaways
INSW
$2.27B
| $211K | ﹤0.01% |
+10,936
| New | +$211K |
|
1065
IonQ
IONQ
$13.8B
| $211K | ﹤0.01% |
+19,629
| New | +$211K |
|
1066
Hudbay
HBM
$5.34B
| $210K | ﹤0.01% |
30,631
+30,601
| +102,003% | +$210K |
|
1067
Leidos
LDOS
$23.5B
| $210K | ﹤0.01% |
+2,188
| New | +$210K |
|
|
DOOR
1068
DELISTED
MASONITE INTERNATIONAL CORP
DOOR
| $210K | ﹤0.01% |
+1,830
| New | +$210K |
|
|
CVA
1069
DELISTED
Covanta Holding Corporation
CVA
| $210K | ﹤0.01% |
+15,198
| New | +$210K |
|
|
ACB
1070
Aurora Cannabis
ACB
$278M
| $209K | ﹤0.01% |
2,251
+51
| +2% | +$4.74K |
|
1071
Montrose Environmental
MEG
$1.06B
| $209K | ﹤0.01% |
4,184
+2,777
| +197% | +$139K |
|
1072
Progyny
PGNY
$1.97B
| $209K | ﹤0.01% |
4,713
-2,668
| -36% | -$118K |
|
1073
Workiva
WK
$4.35B
| $209K | ﹤0.01% |
2,371
-9,596
| -80% | -$846K |
|
|
NAGE
1074
Niagen Bioscience, Inc. Common Stock
NAGE
$768M
| $209K | ﹤0.01% |
+22,483
| New | +$209K |
|
1075
Apple Hospitality REIT
APLE
$2.99B
| $207K | ﹤0.01% |
+14,247
| New | +$207K |
|