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 |
Gilead Sciences
GILD
|
$16.8M |
| 2 |
Apple
AAPL
|
$16.2M |
| 3 |
Booking.com
BKNG
|
$15.6M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
$15.3M |
| 5 |
Wells Fargo
WFC
|
$11.9M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
$38M |
| 2 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
$30.7M |
| 3 |
LNKD
LinkedIn Corporation
LNKD
|
$15.2M |
| 4 |
CELG
Celgene Corp
CELG
|
$11.5M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
$10.5M |
Sector Composition
| 1 | Communication Services | 15.83% |
| 2 | Healthcare | 15.63% |
| 3 | Consumer Discretionary | 12.92% |
| 4 | Technology | 11.44% |
| 5 | Financials | 8.29% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
126
Teck Resources
TECK
$16B
| $1.23M | 0.08% |
67,952
-31,860
| -32% | -$574K |
|
127
Pan American Silver
PAAS
$12.1B
| $1.22M | 0.08% |
+69,509
| New | +$1.22M |
|
128
Delek US
DK
$1.92B
| $1.2M | 0.08% |
69,663
+49,131
| +239% | +$849K |
|
129
iShares Semiconductor ETF
SOXX
$13.5B
| $1.17M | 0.08% |
31,197
+29,337
| +1,577% | +$1.1M |
|
|
BBBY
130
DELISTED
Bed Bath & Beyond Inc
BBBY
| $1.15M | 0.08% |
26,694
+7,066
| +36% | +$304K |
|
131
Aon
AON
$80.5B
| $1.13M | 0.08% |
10,082
+1,806
| +22% | +$203K |
|
132
Puma Biotechnology
PBYI
$257M
| $1.13M | 0.08% |
16,918
+8,770
| +108% | +$588K |
|
133
Signet Jewelers
SIG
$3.73B
| $1.13M | 0.08% |
+15,187
| New | +$1.13M |
|
134
Direxion Daily Financial Bull 3x Shares
FAS
$2.74B
| $1.13M | 0.08% |
38,798
-59,626
| -61% | -$1.74M |
|
135
ProShares UltraPro S&P 500
UPRO
$4.54B
| $1.12M | 0.08% |
91,620
-12,264
| -12% | -$150K |
|
|
MSCC
136
DELISTED
Microsemi Corp
MSCC
| $1.12M | 0.08% |
+26,691
| New | +$1.12M |
|
137
Skyworks Solutions
SWKS
$11.1B
| $1.11M | 0.08% |
14,575
+5,425
| +59% | +$413K |
|
138
Deutsche Bank
DB
$68B
| $1.1M | 0.07% |
+94,497
| New | +$1.1M |
|
|
CCMP
139
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $1.1M | 0.07% |
20,844
+11,089
| +114% | +$586K |
|
140
Corning
GLW
$59.7B
| $1.1M | 0.07% |
+46,499
| New | +$1.1M |
|
141
Huntington Bancshares
HBAN
$26.1B
| $1.1M | 0.07% |
111,225
+104,005
| +1,441% | +$1.02M |
|
|
CBI
142
DELISTED
Chicago Bridge & Iron Nv
CBI
| $1.09M | 0.07% |
39,014
+18,532
| +90% | +$519K |
|
143
Boeing
BA
$174B
| $1.09M | 0.07% |
8,284
-10,755
| -56% | -$1.42M |
|
144
International Paper
IP
$25.5B
| $1.09M | 0.07% |
+23,918
| New | +$1.09M |
|
145
Hain Celestial
HAIN
$168M
| $1.08M | 0.07% |
30,428
+24,952
| +456% | +$887K |
|
|
AET
146
DELISTED
Aetna Inc
AET
| $1.08M | 0.07% |
+9,328
| New | +$1.08M |
|
147
TE Connectivity
TEL
$61.6B
| $1.07M | 0.07% |
16,549
+14,710
| +800% | +$947K |
|
|
BATS
148
DELISTED
Bats Global Markets, Inc.
BATS
| $1.06M | 0.07% |
+35,041
| New | +$1.06M |
|
149
Autohome
ATHM
$3.39B
| $1.05M | 0.07% |
+43,165
| New | +$1.05M |
|
150
Aflac
AFL
$58.1B
| $1.04M | 0.07% |
29,010
-43,322
| -60% | -$1.56M |
|