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 | |
|---|---|---|---|---|---|---|
51
Coca-Cola
KO
$297B
| $3.17M | 0.22% |
74,969
+19,858
| +36% | +$840K |
|
52
United Parcel Service
UPS
$72.3B
| $3.15M | 0.21% |
+28,806
| New | +$3.15M |
|
|
X
53
DELISTED
US Steel
X
| $3.14M | 0.21% |
+166,400
| New | +$3.14M |
|
|
GG
54
DELISTED
Goldcorp Inc
GG
| $3.12M | 0.21% |
188,860
+77,238
| +69% | +$1.28M |
|
55
Ulta Beauty
ULTA
$23.8B
| $2.9M | 0.2% |
12,165
+978
| +9% | +$233K |
|
56
Lam Research
LRCX
$124B
| $2.89M | 0.2% |
30,543
+25,992
| +571% | +$2.46M |
|
57
General Mills
GIS
$26.6B
| $2.87M | 0.19% |
+44,954
| New | +$2.87M |
|
|
SYT
58
DELISTED
Syngenta Ag
SYT
| $2.81M | 0.19% |
+32,088
| New | +$2.81M |
|
59
Autodesk
ADSK
$67.9B
| $2.79M | 0.19% |
+38,506
| New | +$2.79M |
|
|
CAB
60
DELISTED
Cabela's Inc
CAB
| $2.78M | 0.19% |
50,682
+45,468
| +872% | +$2.5M |
|
61
Amgen
AMGN
$153B
| $2.74M | 0.19% |
16,414
-11,259
| -41% | -$1.88M |
|
62
Bristol-Myers Squibb
BMY
$96.7B
| $2.69M | 0.18% |
+49,802
| New | +$2.69M |
|
63
iShares MSCI EAFE ETF
EFA
$65.4B
| $2.66M | 0.18% |
+44,917
| New | +$2.66M |
|
64
F5
FFIV
$17.8B
| $2.58M | 0.17% |
20,699
+4,057
| +24% | +$505K |
|
|
PARA
65
DELISTED
Paramount Global Class B
PARA
| $2.56M | 0.17% |
+46,846
| New | +$2.56M |
|
66
Hartford Financial Services
HIG
$37.4B
| $2.53M | 0.17% |
+59,128
| New | +$2.53M |
|
|
MON
67
DELISTED
Monsanto Co
MON
| $2.51M | 0.17% |
+24,593
| New | +$2.51M |
|
68
Diageo
DEO
$61.1B
| $2.4M | 0.16% |
+20,710
| New | +$2.4M |
|
69
Valero Energy
VLO
$48.3B
| $2.4M | 0.16% |
45,322
+41,108
| +976% | +$2.18M |
|
70
Financial Select Sector SPDR Fund
XLF
$53.6B
| $2.33M | 0.16% |
120,949
+108,582
| +878% | +$2.06M |
|
71
ProShares UltraShort S&P500
SDS
$447M
| $2.33M | 0.16% |
142,272
+40,507
| +40% | +$664K |
|
72
CVS Health
CVS
$93B
| $2.3M | 0.16% |
+25,852
| New | +$2.3M |
|
73
T-Mobile US
TMUS
$284B
| $2.3M | 0.16% |
49,172
+26,191
| +114% | +$1.22M |
|
|
AGN
74
DELISTED
Allergan plc
AGN
| $2.23M | 0.15% |
9,689
-20,055
| -67% | -$4.62M |
|
75
HCA Healthcare
HCA
$95.4B
| $2.1M | 0.14% |
+27,815
| New | +$2.1M |
|