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 | |
|---|---|---|---|---|---|---|
|
TGH
1001
DELISTED
Textainer Group Holdings limited
TGH
| $242K | ﹤0.01% |
+8,477
| New | +$242K |
|
1002
CRISPR Therapeutics
CRSP
$4.71B
| $241K | ﹤0.01% |
1,980
-11,953
| -86% | -$1.45M |
|
1003
Stem
STEM
$111M
| $241K | ﹤0.01% |
+455
| New | +$241K |
|
1004
Itron
ITRI
$5.41B
| $240K | ﹤0.01% |
+2,713
| New | +$240K |
|
1005
ScottsMiracle-Gro
SMG
$3.5B
| $240K | ﹤0.01% |
982
-2,127
| -68% | -$520K |
|
1006
WillScot Mobile Mini Holdings
WSC
$4.17B
| $240K | ﹤0.01% |
+8,649
| New | +$240K |
|
1007
Clarivate
CLVT
$2.85B
| $239K | ﹤0.01% |
+9,060
| New | +$239K |
|
1008
Eversource Energy
ES
$23.8B
| $239K | ﹤0.01% |
2,770
-225
| -8% | -$19.4K |
|
1009
QuantumScape
QS
$4.73B
| $239K | ﹤0.01% |
5,350
-15,359
| -74% | -$686K |
|
|
WBT
1010
DELISTED
Welbilt, Inc.
WBT
| $239K | ﹤0.01% |
14,721
-13,007
| -47% | -$211K |
|
1011
Philip Morris
PM
$257B
| $238K | ﹤0.01% |
+2,683
| New | +$238K |
|
|
EPAY
1012
DELISTED
Bottomline Technologies Inc
EPAY
| $238K | ﹤0.01% |
+5,266
| New | +$238K |
|
1013
AXT Inc
AXTI
$155M
| $237K | ﹤0.01% |
20,385
+6,260
| +44% | +$72.8K |
|
1014
First Bancorp
FBP
$3.52B
| $237K | ﹤0.01% |
21,095
-17,275
| -45% | -$194K |
|
|
SA
1015
Seabridge Gold
SA
$1.8B
| $236K | ﹤0.01% |
14,623
-9,765
| -40% | -$158K |
|
1016
Ameriprise Financial
AMP
$46.4B
| $235K | ﹤0.01% |
1,014
-2,257
| -69% | -$523K |
|
1017
Werner Enterprises
WERN
$1.66B
| $235K | ﹤0.01% |
+4,996
| New | +$235K |
|
|
CYXT
1018
DELISTED
Cyxtera Technologies, Inc. Class A Common Stock
CYXT
| $235K | ﹤0.01% |
+23,739
| New | +$235K |
|
|
ENBL
1019
DELISTED
ENABLE MIDSTREAM PARTNERS, LP
ENBL
| $235K | ﹤0.01% |
36,374
+31,907
| +714% | +$206K |
|
|
RUSL
1020
DELISTED
Direxion Daily Russia Bull 2X Shares
RUSL
| $234K | ﹤0.01% |
9,905
-2,122
| -18% | -$50.1K |
|
1021
Antero Midstream
AM
$8.79B
| $233K | ﹤0.01% |
+25,809
| New | +$233K |
|
1022
Ingredion
INGR
$8.08B
| $233K | ﹤0.01% |
2,601
-2,562
| -50% | -$230K |
|
|
VNET
1023
VNET Group
VNET
$2.13B
| $233K | ﹤0.01% |
+7,231
| New | +$233K |
|
1024
Teledyne Technologies
TDY
$25.6B
| $232K | ﹤0.01% |
+562
| New | +$232K |
|
1025
CVR Partners
UAN
$903M
| $230K | ﹤0.01% |
5,709
+5,418
| +1,862% | +$218K |
|