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 |
Financial Select Sector SPDR Fund
XLF
|
$42.3M |
| 2 |
Shopify
SHOP
|
$37.4M |
| 3 |
Verizon
VZ
|
$34M |
| 4 |
iShares China Large-Cap ETF
FXI
|
$33M |
| 5 |
Merck
MRK
|
$28M |
Top Sells
| 1 |
AMC Entertainment Holdings
AMC
|
$38.3M |
| 2 |
Carnival Corp
CCL
|
$37.6M |
| 3 |
GE Aerospace
GE
|
$33M |
| 4 |
Advanced Micro Devices
AMD
|
$30.6M |
| 5 |
Micron Technology
MU
|
$28.3M |
Sector Composition
| 1 | Technology | 20.53% |
| 2 | Consumer Discretionary | 13.81% |
| 3 | Healthcare | 11.39% |
| 4 | Communication Services | 7.32% |
| 5 | Industrials | 6.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Vanguard Total Stock Market ETF
VTI
$528B
| $3.73M | ﹤0.01% |
15,461
+5,383
| +53% | +$1.3M |
|
177
JetBlue
JBLU
$1.85B
| $3.73M | ﹤0.01% |
261,792
+143,007
| +120% | +$2.04M |
|
178
Citizens Financial Group
CFG
$22.3B
| $3.72M | ﹤0.01% |
78,794
+26,240
| +50% | +$1.24M |
|
|
COUP
179
DELISTED
Coupa Software Incorporated
COUP
| $3.72M | ﹤0.01% |
23,562
+22,672
| +2,547% | +$3.58M |
|
180
Virgin Galactic
SPCE
$185M
| $3.71M | ﹤0.01% |
13,879
+13,859
| +69,295% | +$3.71M |
|
181
Hilton Worldwide
HLT
$64B
| $3.68M | ﹤0.01% |
23,563
+21,960
| +1,370% | +$3.42M |
|
182
Sunrun
RUN
$4.19B
| $3.66M | ﹤0.01% |
106,782
+30,559
| +40% | +$1.05M |
|
183
Marathon Digital Holdings
MARA
$5.63B
| $3.65M | ﹤0.01% |
111,174
+67,901
| +157% | +$2.23M |
|
184
BioNTech
BNTX
$27B
| $3.65M | ﹤0.01% |
14,156
+4,317
| +44% | +$1.11M |
|
185
AdvisorShares Pure US Cannabis ETF
MSOS
$837M
| $3.63M | ﹤0.01% |
141,929
+100,973
| +247% | +$2.58M |
|
186
PagSeguro Digital
PAGS
$2.8B
| $3.63M | ﹤0.01% |
138,279
+62,143
| +82% | +$1.63M |
|
|
FTCH
187
DELISTED
Farfetch Limited Class A Ordinary Shares
FTCH
| $3.62M | ﹤0.01% |
108,348
+13,217
| +14% | +$442K |
|
|
ZNGA
188
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
| $3.62M | ﹤0.01% |
564,900
+392,398
| +227% | +$2.51M |
|
189
Schlumberger
SLB
$53.4B
| $3.61M | ﹤0.01% |
120,573
-37,798
| -24% | -$1.13M |
|
190
US Bancorp
USB
$75.9B
| $3.59M | ﹤0.01% |
+63,991
| New | +$3.59M |
|
191
Coty
COTY
$3.81B
| $3.58M | ﹤0.01% |
341,427
+266,945
| +358% | +$2.8M |
|
192
Direxion Daily Energy Bull 2X Shares
ERX
$218M
| $3.55M | ﹤0.01% |
119,886
-18,838
| -14% | -$558K |
|
193
Dow Inc
DOW
$17.4B
| $3.54M | ﹤0.01% |
62,355
-3,043
| -5% | -$173K |
|
194
iShares Russell 1000 Growth ETF
IWF
$117B
| $3.53M | ﹤0.01% |
11,536
-622
| -5% | -$190K |
|
195
Viatris
VTRS
$12.2B
| $3.51M | ﹤0.01% |
259,394
+176,059
| +211% | +$2.38M |
|
196
Halliburton
HAL
$18.8B
| $3.47M | ﹤0.01% |
151,786
+66,662
| +78% | +$1.52M |
|
197
QuantumScape
QS
$4.44B
| $3.47M | ﹤0.01% |
156,353
-59,349
| -28% | -$1.32M |
|
|
MNDT
198
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $3.45M | ﹤0.01% |
196,960
+53,655
| +37% | +$941K |
|
199
Skyworks Solutions
SWKS
$11.2B
| $3.45M | ﹤0.01% |
22,246
+3,418
| +18% | +$530K |
|
200
D.R. Horton
DHI
$54.2B
| $3.4M | ﹤0.01% |
31,358
+12,495
| +66% | +$1.35M |
|