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 | |
|---|---|---|---|---|---|---|
101
CarMax
KMX
$9.04B
| $2.28M | 0.1% |
36,111
-2,759
| -7% | -$174K |
|
102
Bank of America
BAC
$371B
| $2.26M | 0.1% |
93,102
-379,243
| -80% | -$9.2M |
|
|
AMTD
103
DELISTED
TD Ameritrade Holding Corp
AMTD
| $2.25M | 0.1% |
+52,447
| New | +$2.25M |
|
104
SAP
SAP
$316B
| $2.25M | 0.1% |
21,528
-1,746
| -8% | -$183K |
|
105
Adobe
ADBE
$148B
| $2.22M | 0.1% |
15,686
-25,304
| -62% | -$3.58M |
|
106
Radware
RDWR
$1.06B
| $2.21M | 0.1% |
126,199
+15,739
| +14% | +$276K |
|
107
iShares MSCI EAFE ETF
EFA
$65.4B
| $2.2M | 0.1% |
+33,734
| New | +$2.2M |
|
108
Newmont
NEM
$82.8B
| $2.17M | 0.09% |
+66,854
| New | +$2.17M |
|
|
GG
109
DELISTED
Goldcorp Inc
GG
| $2.14M | 0.09% |
165,554
-89,393
| -35% | -$1.15M |
|
110
Allstate
ALL
$53.9B
| $2.13M | 0.09% |
24,088
+16,840
| +232% | +$1.49M |
|
111
iShares MSCI South Korea ETF
EWY
$5.17B
| $2.1M | 0.09% |
+31,035
| New | +$2.1M |
|
112
Lumentum
LITE
$9.37B
| $2.09M | 0.09% |
36,635
-26,463
| -42% | -$1.51M |
|
113
Berkshire Hathaway Class B
BRK.B
$1.08T
| $2.07M | 0.09% |
12,222
-59,293
| -83% | -$10M |
|
|
TTM
114
DELISTED
Tata Motors Limited
TTM
| $2.03M | 0.09% |
61,419
+39,714
| +183% | +$1.31M |
|
115
Hilton Worldwide
HLT
$64.7B
| $2.02M | 0.09% |
+32,679
| New | +$2.02M |
|
116
Packaging Corp of America
PKG
$19.2B
| $2.02M | 0.09% |
+18,127
| New | +$2.02M |
|
117
United Airlines
UAL
$34.4B
| $2.01M | 0.09% |
+26,652
| New | +$2.01M |
|
118
Marathon Petroleum
MPC
$54.4B
| $2M | 0.09% |
38,171
-8,888
| -19% | -$465K |
|
119
PayPal
PYPL
$66.5B
| $1.98M | 0.09% |
36,903
-3,046
| -8% | -$163K |
|
120
Acadia Pharmaceuticals
ACAD
$4.34B
| $1.97M | 0.09% |
70,683
+24,992
| +55% | +$697K |
|
121
Ford
F
$46.2B
| $1.96M | 0.09% |
175,482
+94,754
| +117% | +$1.06M |
|
122
lululemon athletica
LULU
$23.8B
| $1.95M | 0.08% |
32,695
-64,172
| -66% | -$3.83M |
|
123
American Airlines Group
AAL
$8.87B
| $1.94M | 0.08% |
38,638
-15,326
| -28% | -$771K |
|
124
Energy Select Sector SPDR Fund
XLE
$27.1B
| $1.86M | 0.08% |
28,632
-149,681
| -84% | -$9.71M |
|
125
Bausch Health
BHC
$2.72B
| $1.85M | 0.08% |
106,704
-211,195
| -66% | -$3.65M |
|