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 | |
|---|---|---|---|---|---|---|
151
Linde
LIN
$221B
| $2.52M | ﹤0.01% |
9,005
+8,645
| +2,401% | +$2.42M |
|
152
TAL Education Group
TAL
$6.34B
| $2.48M | ﹤0.01% |
46,136
+7,023
| +18% | +$378K |
|
|
BLUE
153
DELISTED
bluebird bio
BLUE
| $2.47M | ﹤0.01% |
81,978
+28,276
| +53% | +$852K |
|
154
ARK Genomic Revolution ETF
ARKG
$1.05B
| $2.47M | ﹤0.01% |
27,828
+18,815
| +209% | +$1.67M |
|
155
Johnson Controls International
JCI
$68.9B
| $2.46M | ﹤0.01% |
+41,228
| New | +$2.46M |
|
156
Direxion Daily Technology Bull 3x Shares
TECL
$3.42B
| $2.45M | ﹤0.01% |
59,318
+52,936
| +829% | -$186K |
|
157
Micron Technology
MU
$133B
| $2.41M | ﹤0.01% |
27,310
-14,071
| -34% | -$1.24M |
|
158
Wheaton Precious Metals
WPM
$46.5B
| $2.4M | ﹤0.01% |
62,767
-53,981
| -46% | -$2.06M |
|
159
CF Industries
CF
$13.7B
| $2.35M | ﹤0.01% |
51,724
+37,818
| +272% | +$1.72M |
|
160
Acadia Pharmaceuticals
ACAD
$4.34B
| $2.34M | ﹤0.01% |
90,857
+69,239
| +320% | +$1.79M |
|
161
Cummins
CMI
$54B
| $2.31M | ﹤0.01% |
8,900
+8,306
| +1,398% | +$2.15M |
|
162
Wolfspeed
WOLF
$203M
| $2.28M | ﹤0.01% |
21,103
+9,215
| +78% | +$996K |
|
163
Origin Materials
ORGN
$82.2M
| $2.26M | ﹤0.01% |
+223,503
| New | +$2.26M |
|
164
Fortinet
FTNT
$58.7B
| $2.26M | ﹤0.01% |
+12,230
| New | +$2.26M |
|
|
DISH
165
DELISTED
DISH Network Corp.
DISH
| $2.25M | ﹤0.01% |
62,179
+47,121
| +313% | +$1.71M |
|
166
Stitch Fix
SFIX
$692M
| $2.25M | ﹤0.01% |
45,331
+40,812
| +903% | +$2.02M |
|
167
Sabre
SABR
$683M
| $2.25M | ﹤0.01% |
151,643
-4,310
| -3% | -$63.8K |
|
168
Dropbox
DBX
$7.82B
| $2.24M | ﹤0.01% |
84,166
-63,247
| -43% | -$1.69M |
|
169
Sony
SONY
$162B
| $2.24M | ﹤0.01% |
21,104
+13,261
| +169% | +$1.41M |
|
170
Teva Pharmaceuticals
TEVA
$21.5B
| $2.24M | ﹤0.01% |
193,895
+71,808
| +59% | +$828K |
|
171
SPDR S&P Homebuilders ETF
XHB
$1.91B
| $2.22M | ﹤0.01% |
31,599
+8,822
| +39% | +$621K |
|
172
JetBlue
JBLU
$1.98B
| $2.22M | ﹤0.01% |
109,145
+48,732
| +81% | +$991K |
|
173
ARK Web x.0 ETF
ARKW
$2.34B
| $2.22M | ﹤0.01% |
15,026
+12,197
| +431% | +$1.8M |
|
174
Chewy
CHWY
$16.8B
| $2.21M | ﹤0.01% |
+26,084
| New | +$2.21M |
|
175
Global X US Infrastructure Development ETF
PAVE
$9.25B
| $2.21M | ﹤0.01% |
88,123
+87,923
| +43,962% | +$2.2M |
|