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 |
Amazon
AMZN
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Allstate
ALL
$53.6B
| $1.62M | 0.07% | 17,659 -6,429 | -27% | -$591K |
|
|
ATVI
152
DELISTED
Activision Blizzard Inc.
ATVI
| $1.62M | 0.07% | 25,069 +15,406 | +159% | +$994K |
|
153
The Mosaic Company
MOS
$10.6B
| $1.6M | 0.07% | 74,260 -28,113 | -27% | -$607K |
|
|
GG
154
DELISTED
Goldcorp Inc
GG
| $1.6M | 0.07% | 123,232 -42,322 | -26% | -$548K |
|
155
Incyte
INCY
$16.5B
| $1.59M | 0.07% | 13,647 -14,377 | -51% | -$1.68M |
|
156
PVH
PVH
$4.05B
| $1.59M | 0.06% | 12,575 -1,517 | -11% | -$191K |
|
157
Take-Two Interactive
TTWO
$43B
| $1.58M | 0.06% | 15,499 +1,993 | +15% | +$204K |
|
158
Golar LNG
GLNG
$4.48B
| $1.57M | 0.06% | 69,575 +39,154 | +129% | +$885K |
|
|
SHPG
159
DELISTED
Shire pic
SHPG
| $1.57M | 0.06% | +10,276 | New | +$1.57M |
|
|
CEO
160
DELISTED
CNOOC Limited
CEO
| $1.57M | 0.06% | 12,101 -2,699 | -18% | -$350K |
|
161
Intuitive Surgical
ISRG
$170B
| $1.56M | 0.06% | 1,496 -2,697 | -64% | -$2.82M |
|
|
LN
162
DELISTED
LINE Corporation
LN
| $1.54M | 0.06% | 42,427 +12,060 | +40% | +$436K |
|
163
Cummins
CMI
$54.9B
| $1.51M | 0.06% | +9,010 | New | +$1.51M |
|
164
Kimberly-Clark
KMB
$42.8B
| $1.46M | 0.06% | +12,405 | New | +$1.46M |
|
|
TTM
165
DELISTED
Tata Motors Limited
TTM
| $1.46M | 0.06% | 46,662 -14,757 | -24% | -$461K |
|
166
Corpay
CPAY
$23B
| $1.46M | 0.06% | 9,420 -7,777 | -45% | -$1.2M |
|
167
Alnylam Pharmaceuticals
ALNY
$58.5B
| $1.46M | 0.06% | +12,394 | New | +$1.46M |
|
168
Travel + Leisure Co
TNL
$4.11B
| $1.45M | 0.06% | +13,717 | New | +$1.45M |
|
169
T Rowe Price
TROW
$23.6B
| $1.44M | 0.06% | +15,893 | New | +$1.44M |
|
170
Microchip Technology
MCHP
$35.1B
| $1.41M | 0.06% | 15,699 -6,379 | -29% | -$573K |
|
171
VF Corp
VFC
$5.91B
| $1.41M | 0.06% | +22,143 | New | +$1.41M |
|
172
iRobot
IRBT
$106M
| $1.4M | 0.06% | 18,172 +17,972 | +8,986% | +$1.38M |
|
173
iShares Russell 1000 Value ETF
IWD
$63.5B
| $1.4M | 0.06% | +11,801 | New | +$1.4M |
|
174
Watsco
WSO
$16.3B
| $1.4M | 0.06% | 8,669 +8,555 | +7,504% | +$1.38M |
|
175
Trade Desk
TTD
$26.7B
| $1.38M | 0.06% | +22,415 | New | +$1.38M |
|