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 | |
|---|---|---|---|---|---|---|
|
ALXN
76
DELISTED
Alexion Pharmaceuticals Inc
ALXN
| $2.09M | 0.14% |
17,019
+922
| +6% | +$113K |
|
77
Incyte
INCY
$17B
| $2.06M | 0.14% |
+21,890
| New | +$2.06M |
|
78
Vodafone
VOD
$28.2B
| $2.01M | 0.14% |
68,842
+15,850
| +30% | +$462K |
|
79
Constellation Brands
STZ
$25.8B
| $1.95M | 0.13% |
11,711
+11,247
| +2,424% | +$1.87M |
|
80
General Motors
GM
$55B
| $1.92M | 0.13% |
+60,458
| New | +$1.92M |
|
81
Direxion Daily S&P 500 Bull 3x Shares
SPXL
$5.41B
| $1.91M | 0.13% |
19,640
-6,275
| -24% | -$610K |
|
82
Molson Coors Class B
TAP
$9.85B
| $1.9M | 0.13% |
17,322
+12,728
| +277% | +$1.4M |
|
83
TripAdvisor
TRIP
$2B
| $1.89M | 0.13% |
29,953
-4,599
| -13% | -$290K |
|
84
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.78B
| $1.88M | 0.13% |
34,903
-12,036
| -26% | -$647K |
|
85
Elevance Health
ELV
$72.4B
| $1.85M | 0.13% |
+14,726
| New | +$1.85M |
|
|
RDS.B
86
DELISTED
Royal Dutch Shell PLC ADS Class B
RDS.B
| $1.84M | 0.12% |
+34,735
| New | +$1.84M |
|
87
lululemon athletica
LULU
$23.8B
| $1.83M | 0.12% |
29,957
+687
| +2% | +$41.9K |
|
88
National Beverage
FIZZ
$3.86B
| $1.82M | 0.12% |
41,205
+34,734
| +537% | +$1.53M |
|
|
CVT
89
DELISTED
CVENT, INC.
CVT
| $1.81M | 0.12% |
57,103
-16,063
| -22% | -$509K |
|
90
Coty
COTY
$3.78B
| $1.8M | 0.12% |
76,687
+68,812
| +874% | +$1.62M |
|
91
Ionis Pharmaceuticals
IONS
$9.64B
| $1.73M | 0.12% |
47,310
+40,534
| +598% | +$1.48M |
|
|
FIT
92
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $1.73M | 0.12% |
116,680
+92,696
| +386% | +$1.38M |
|
93
American Tower
AMT
$91.9B
| $1.71M | 0.12% |
+15,126
| New | +$1.71M |
|
|
ILG
94
DELISTED
ILG, Inc Common Stock
ILG
| $1.7M | 0.12% |
99,246
+36,263
| +58% | +$623K |
|
95
Synaptics
SYNA
$2.62B
| $1.7M | 0.12% |
29,017
+10,933
| +60% | +$640K |
|
96
PTC Therapeutics
PTCT
$4.41B
| $1.68M | 0.11% |
+120,210
| New | +$1.68M |
|
97
BioMarin Pharmaceuticals
BMRN
$11.3B
| $1.68M | 0.11% |
18,131
+1,528
| +9% | +$141K |
|
98
Tesla
TSLA
$1.08T
| $1.63M | 0.11% |
+8,013
| New | +$1.63M |
|
|
LSI
99
DELISTED
Life Storage, Inc.
LSI
| $1.63M | 0.11% |
18,346
+18,131
| +8,433% | +$1.61M |
|
100
ProShares Ultra QQQ
QLD
$8.89B
| $1.63M | 0.11% |
18,841
-5,294
| -22% | -$458K |
|