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
|
$84.3M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
$37M |
| 3 |
Amgen
AMGN
|
$32.3M |
| 4 |
Micron Technology
MU
|
$29.4M |
| 5 |
Qualcomm
QCOM
|
$18M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$29.8M |
| 2 |
Gilead Sciences
GILD
|
$29.3M |
| 3 |
Goldman Sachs
GS
|
$27.7M |
| 4 |
Booking.com
BKNG
|
$26M |
| 5 |
AT&T
T
|
$20.8M |
Sector Composition
| 1 | Technology | 20.65% |
| 2 | Communication Services | 17.64% |
| 3 | Consumer Discretionary | 14.77% |
| 4 | Healthcare | 11.1% |
| 5 | Financials | 6.35% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
151
Clorox
CLX
$15B
| $1.55M | 0.07% |
11,660
+4,569
| +64% | +$609K |
|
|
TSRO
152
DELISTED
TESARO, Inc.
TSRO
| $1.54M | 0.07% |
11,038
-14,005
| -56% | -$1.96M |
|
153
Aflac
AFL
$57.1B
| $1.54M | 0.07% |
+39,650
| New | +$1.54M |
|
|
WCG
154
DELISTED
Wellcare Health Plans, Inc.
WCG
| $1.54M | 0.07% |
8,578
-1,595
| -16% | -$286K |
|
155
Kinder Morgan
KMI
$59.4B
| $1.5M | 0.07% |
78,505
-38,571
| -33% | -$739K |
|
156
Ferrari
RACE
$88.2B
| $1.5M | 0.07% |
+17,405
| New | +$1.5M |
|
157
ManpowerGroup
MAN
$1.89B
| $1.48M | 0.06% |
13,219
+1,720
| +15% | +$192K |
|
158
Acuity Brands
AYI
$10.2B
| $1.47M | 0.06% |
+7,240
| New | +$1.47M |
|
159
Restaurant Brands International
QSR
$20.5B
| $1.47M | 0.06% |
23,526
+18,847
| +403% | +$1.18M |
|
160
iShares Biotechnology ETF
IBB
$5.68B
| $1.47M | 0.06% |
14,184
+13,623
| +2,428% | +$1.41M |
|
161
Cognizant
CTSH
$35.1B
| $1.46M | 0.06% |
+21,953
| New | +$1.46M |
|
|
RSX
162
DELISTED
VanEck Russia ETF
RSX
| $1.46M | 0.06% |
76,011
-6,482
| -8% | -$124K |
|
|
GAP
163
The Gap, Inc.
GAP
$8.38B
| $1.46M | 0.06% |
66,233
-47,286
| -42% | -$1.04M |
|
|
RDS.A
164
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $1.45M | 0.06% |
27,209
-12,589
| -32% | -$669K |
|
165
Nexstar Media Group
NXST
$6.24B
| $1.43M | 0.06% |
23,886
+17,051
| +249% | +$1.02M |
|
166
BlackBerry
BB
$2.24B
| $1.42M | 0.06% |
142,444
-13,316
| -9% | -$133K |
|
167
Perrigo
PRGO
$3.21B
| $1.42M | 0.06% |
+18,823
| New | +$1.42M |
|
168
Nabors Industries
NBR
$515M
| $1.41M | 0.06% |
+3,461
| New | +$1.41M |
|
169
Teva Pharmaceuticals
TEVA
$21.5B
| $1.37M | 0.06% |
41,320
-88,622
| -68% | -$2.94M |
|
170
McDonald's
MCD
$226B
| $1.36M | 0.06% |
+8,872
| New | +$1.36M |
|
|
GGP
171
DELISTED
GGP Inc.
GGP
| $1.35M | 0.06% |
57,478
+51,883
| +927% | +$1.22M |
|
|
JWN
172
DELISTED
Nordstrom
JWN
| $1.34M | 0.06% |
27,938
-15,125
| -35% | -$723K |
|
173
SPDR S&P Regional Banking ETF
KRE
$3.97B
| $1.32M | 0.06% |
24,105
-52,444
| -69% | -$2.88M |
|
174
Vulcan Materials
VMC
$38.1B
| $1.32M | 0.06% |
10,453
-10,810
| -51% | -$1.37M |
|
|
MOMO
175
Hello Group
MOMO
$1.33B
| $1.32M | 0.06% |
35,701
+32,126
| +899% | +$1.19M |
|