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 |
Alphabet (Google) Class C
GOOG
|
$54.6M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$52.5M |
| 3 |
SPDR S&P 500 ETF Trust
SPY
|
$40.9M |
| 4 |
Apple
AAPL
|
$16.5M |
| 5 |
Visa
V
|
$12M |
Top Sells
| 1 |
Amazon
AMZN
|
$98.7M |
| 2 |
Meta Platforms (Facebook)
META
|
$70.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
$33.4M |
| 4 |
Goldman Sachs
GS
|
$30.2M |
| 5 |
Boeing
BA
|
$26.5M |
Sector Composition
| 1 | Communication Services | 14.71% |
| 2 | Consumer Discretionary | 14.32% |
| 3 | Technology | 11.86% |
| 4 | Financials | 7.38% |
| 5 | Industrials | 6.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
176
Dollar Tree
DLTR
$20.6B
| $1.27M | ﹤0.01% |
14,019
-37,157
| -73% | -$3.36M |
|
177
PTC
PTC
$25.6B
| $1.26M | ﹤0.01% |
+15,243
| New | +$1.26M |
|
178
Illumina
ILMN
$15.7B
| $1.25M | ﹤0.01% |
4,279
-10,942
| -72% | -$3.19M |
|
|
USG
179
DELISTED
Usg
USG
| $1.25M | ﹤0.01% |
29,243
+23,959
| +453% | +$1.02M |
|
180
SPDR S&P Bank ETF
KBE
$1.62B
| $1.25M | ﹤0.01% |
33,370
+30,835
| +1,216% | +$1.15M |
|
|
COUP
181
DELISTED
Coupa Software Incorporated
COUP
| $1.23M | ﹤0.01% |
+19,554
| New | +$1.23M |
|
182
Valmont Industries
VMI
$7.46B
| $1.22M | ﹤0.01% |
+11,039
| New | +$1.22M |
|
|
FDC
183
DELISTED
First Data Corporation
FDC
| $1.22M | ﹤0.01% |
72,244
-11,521
| -14% | -$195K |
|
184
Palo Alto Networks
PANW
$130B
| $1.22M | ﹤0.01% |
38,760
+21,546
| +125% | +$676K |
|
185
Citizens Financial Group
CFG
$22.3B
| $1.22M | ﹤0.01% |
40,891
+25,506
| +166% | +$758K |
|
186
Alaska Air
ALK
$7.28B
| $1.21M | ﹤0.01% |
19,836
+18,185
| +1,101% | +$1.11M |
|
187
Canadian Solar
CSIQ
$748M
| $1.21M | ﹤0.01% |
84,213
+43,540
| +107% | +$624K |
|
188
DaVita
DVA
$9.86B
| $1.19M | ﹤0.01% |
+23,171
| New | +$1.19M |
|
|
JOYY
189
JOYY Inc. American Depositary Shares
JOYY
$3.21B
| $1.19M | ﹤0.01% |
19,878
-12,502
| -39% | -$748K |
|
|
ABB
190
DELISTED
ABB Ltd.
ABB
| $1.19M | ﹤0.01% |
+62,415
| New | +$1.19M |
|
191
STMicroelectronics
STM
$24B
| $1.18M | ﹤0.01% |
85,367
+57,438
| +206% | +$797K |
|
192
Gilead Sciences
GILD
$143B
| $1.18M | ﹤0.01% |
18,876
+1,476
| +8% | +$92.3K |
|
193
Chevron
CVX
$310B
| $1.18M | ﹤0.01% |
10,804
+3,397
| +46% | +$369K |
|
|
PARA
194
DELISTED
Paramount Global Class B
PARA
| $1.17M | ﹤0.01% |
+26,693
| New | +$1.17M |
|
195
Lowe's Companies
LOW
$151B
| $1.15M | ﹤0.01% |
+12,490
| New | +$1.15M |
|
|
REN
196
DELISTED
Resolute Energy Corporaton
REN
| $1.14M | ﹤0.01% |
39,475
+31,194
| +377% | +$903K |
|
197
Devon Energy
DVN
$22.1B
| $1.14M | ﹤0.01% |
50,425
-15,999
| -24% | -$360K |
|
|
BBL
198
DELISTED
BHP Group Plc American Depositary Shares (Each representing two Ordinary Shares)
BBL
| $1.11M | ﹤0.01% |
26,507
-5,447
| -17% | -$228K |
|
199
Direxion Daily S&P Biotech Bear 3X Shares
LABD
$56.8M
| $1.11M | ﹤0.01% |
1,297
+1,233
| +1,927% | +$1.05M |
|
200
BP
BP
$87.4B
| $1.11M | ﹤0.01% |
+30,172
| New | +$1.11M |
|