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 |
Alibaba
BABA
|
$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$97.6M |
| 3 |
Walt Disney
DIS
|
$73.4M |
| 4 |
Citigroup
C
|
$45.8M |
| 5 |
KraneShares CSI China Internet ETF
KWEB
|
$41.5M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$149M |
| 2 |
Amazon
AMZN
|
$107M |
| 3 |
SPDR Gold Trust
GLD
|
$58.6M |
| 4 |
Coinbase
COIN
|
$56.5M |
| 5 |
NVIDIA
NVDA
|
$48.2M |
Sector Composition
| 1 | Technology | 16.06% |
| 2 | Consumer Discretionary | 14.45% |
| 3 | Communication Services | 10.03% |
| 4 | Financials | 9.44% |
| 5 | Healthcare | 9.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
101
Sony
SONY
$162B
| $6.22M | ﹤0.01% |
65,683
+23,834
| +57% | +$2.26M |
|
102
Crocs
CROX
$4.74B
| $6.17M | ﹤0.01% |
66,063
+40,155
| +155% | +$3.75M |
|
103
Regeneron Pharmaceuticals
REGN
$59.8B
| $6.13M | ﹤0.01% |
6,984
-823
| -11% | -$723K |
|
104
iShares MBS ETF
MBB
$40.9B
| $6.08M | ﹤0.01% |
64,585
+63,368
| +5,207% | +$5.96M |
|
105
Axalta
AXTA
$6.67B
| $6.02M | ﹤0.01% |
177,092
+174,135
| +5,889% | +$5.91M |
|
106
Hilton Worldwide
HLT
$64.7B
| $5.94M | ﹤0.01% |
+32,633
| New | +$5.94M |
|
107
American Electric Power
AEP
$58.8B
| $5.83M | ﹤0.01% |
+71,732
| New | +$5.83M |
|
108
Bank of New York Mellon
BK
$73.8B
| $5.81M | ﹤0.01% |
111,586
-13,832
| -11% | -$720K |
|
109
Allstate
ALL
$53.9B
| $5.77M | ﹤0.01% |
41,208
+21,453
| +109% | +$3M |
|
110
Pure Storage
PSTG
$25.5B
| $5.65M | ﹤0.01% |
158,569
+146,432
| +1,206% | +$5.22M |
|
111
Danaher
DHR
$143B
| $5.58M | ﹤0.01% |
24,112
-2,038
| -8% | -$1.25M |
|
112
Ambac
AMBC
$423M
| $5.49M | ﹤0.01% |
333,361
+319,769
| +2,353% | +$5.27M |
|
113
Trane Technologies
TT
$90.9B
| $5.43M | ﹤0.01% |
22,259
+8,683
| +64% | +$2.12M |
|
114
Direxion Daily Energy Bull 2X Shares
ERX
$224M
| $5.43M | ﹤0.01% |
+95,964
| New | +$5.43M |
|
115
Williams Companies
WMB
$70.5B
| $5.4M | ﹤0.01% |
+154,923
| New | +$5.4M |
|
116
Toyota
TM
$252B
| $5.39M | ﹤0.01% |
+29,382
| New | +$5.39M |
|
117
PENN Entertainment
PENN
$2.86B
| $5.36M | ﹤0.01% |
205,989
-31,730
| -13% | -$825K |
|
118
iShares Russell 1000 Value ETF
IWD
$63.2B
| $5.26M | ﹤0.01% |
+31,840
| New | +$5.26M |
|
119
PAR Technology
PAR
$1.99B
| $5.18M | ﹤0.01% |
118,947
+117,485
| +8,036% | +$5.11M |
|
120
Hershey
HSY
$37.4B
| $5.17M | ﹤0.01% |
27,729
-8,398
| -23% | -$1.57M |
|
121
Antero Resources
AR
$9.82B
| $5.17M | ﹤0.01% |
227,770
+45,934
| +25% | +$1.04M |
|
122
Lyft
LYFT
$7.02B
| $5.13M | ﹤0.01% |
+341,977
| New | +$5.13M |
|
123
Fidelity National Information Services
FIS
$35.6B
| $5.08M | ﹤0.01% |
+84,576
| New | +$5.08M |
|
124
Linde
LIN
$221B
| $5.07M | ﹤0.01% |
12,353
-5,321
| -30% | -$2.19M |
|
125
NetEase
NTES
$85.4B
| $5.06M | ﹤0.01% |
+54,353
| New | +$5.06M |
|