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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Gilead Sciences
GILD
|
+$17.3M |
| 2 |
Apple
AAPL
|
+$15.2M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$14.9M |
| 4 |
Booking.com
BKNG
|
+$14.7M |
| 5 |
Wells Fargo
WFC
|
+$12.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$38.3M |
| 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
|
+$12.6M |
| 5 |
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
|
+$10.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.39% |
| 2 | Healthcare | 8.28% |
| 3 | Consumer Discretionary | 6.84% |
| 4 | Technology | 6.06% |
| 5 | Financials | 4.39% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
101
Bristol-Myers Squibb
BMY
$124B
| $2.69M | 0.18% |
+49,802
| New | +$3.2M |
|
102
PUT
Walt Disney
DIS
$167B
| $2.68M | 0.18% |
4,508
-3,167
| -41% | -$303K |
|
103
iShares MSCI EAFE ETF
EFA
$76.9B
| $2.65M | 0.18% |
+44,917
| New | +$2.6M |
|
104
CALL
Broadcom
AVGO
$1.84T
| $2.63M | 0.18% |
14,860
-1,930
| -11% | -$32.3K |
|
105
F5
FFIV
$23.1B
| $2.58M | 0.17% |
20,699
+4,057
| +24% | +$493K |
|
|
PARA
106
DELISTED
Paramount Global Class B
PARA
| $2.56M | 0.17% |
+46,846
| New | +$2.49M |
|
107
Hartford Financial Services
HIG
$38.9B
| $2.53M | 0.17% |
+59,128
| New | +$2.47M |
|
|
MON
108
DELISTED
Monsanto Co
MON
| $2.51M | 0.17% |
+24,593
| New | +$2.58M |
|
109
CALL
NVIDIA
NVDA
$5.02T
| $2.46M | 0.17% |
121,400
+63,000
| +108% | +$93K |
|
110
PUT
Invesco QQQ Trust
QQQ
$471B
| $2.46M | 0.17% |
16,218
-1,913
| -11% | -$221K |
|
111
CALL
Baidu
BIDU
$36.8B
| $2.44M | 0.17% |
2,496
+423
| +20% | +$73.2K |
|
112
PUT
State Street Materials Select Sector SPDR ETF
XLB
$8.31B
| $2.41M | 0.16% |
55,488
+3,640
| +7% | +$87.7K |
|
113
Diageo
DEO
$46.4B
| $2.4M | 0.16% |
+20,710
| New | +$2.37M |
|
114
Valero Energy
VLO
$93.5B
| $2.4M | 0.16% |
45,322
+41,108
| +976% | +$2.19M |
|
|
CBI
115
PUT
DELISTED
Chicago Bridge & Iron Nv
CBI
| $2.35M | 0.16% |
760
+207
| +37% | +$6.71K |
|
116
State Street Financial Select Sector SPDR ETF
XLF
$55.4B
| $2.33M | 0.16% |
120,949
+106,861
| +759% | +$2.2M |
|
117
CALL
Caterpillar
CAT
$410B
| $2.33M | 0.16% |
3,621
-47
| -1% | -$3.85K |
|
118
ProShares UltraShort S&P500
SDS
$396M
| $2.33M | 0.16% |
1,423
+405
| +40% | +$674K |
|
119
CVS Health
CVS
$141B
| $2.3M | 0.16% |
+25,852
| New | +$2.44M |
|
120
T-Mobile US
TMUS
$206B
| $2.3M | 0.16% |
49,172
+26,191
| +114% | +$1.2M |
|
121
PUT
Netflix
NFLX
$286B
| $2.29M | 0.16% |
77,730
-20,380
| -21% | -$195K |
|
122
CALL
Microsoft
MSFT
$2.95T
| $2.28M | 0.15% |
5,722
-1,887
| -25% | -$107K |
|
123
PUT
ProShares UltraShort Health Care
RXD
$3.35M
| $2.27M | 0.15% |
615
-245
| -28% | -$42.3K |
|
124
CALL
EOG Resources
EOG
$76.4B
| $2.26M | 0.15% |
2,064
+782
| +61% | +$68.7K |
|
|
GWPH
125
CALL
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $2.25M | 0.15% |
718
+351
| +96% | +$33.5K |
|
Similar funds
Simplex Trading's Q3 2016 Portfolio in Review
As of Q3 2016, Simplex Trading held 7,235 positions worth $1.48B, down 1.4% from $1.5B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading withdrew a net $87.1M in Q3 2016, closing 1,479 positions and reducing 1,939 holdings. Its most notable exit was SPDR Gold Trust, an estimated $38.3M position sold in full.
By sector, the portfolio is most concentrated in Communication Services at 8.4% of assets, up from 6.6% a quarter earlier, followed by Healthcare and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Booking.com worth $15.6M.
- Simplex Trading's largest Q3 2016 buy was Booking.com: 264,225 shares worth $15.6M.
- Simplex Trading added most to Gilead Sciences in Q3 2016, an estimated $17.3M increase.
- Simplex Trading's biggest Q3 2016 reduction was LinkedIn Corporation, cutting an estimated $15.2M.
- Simplex Trading fully exited SPDR Gold Trust in Q3 2016, selling an estimated $38.3M.
- Simplex Trading's ten largest holdings make up 18% of its $1.48B portfolio in Q3 2016.
- Simplex Trading opened 1,460 new positions and closed 1,479 in Q3 2016.
- Simplex Trading's portfolio value fell 1.4% quarter-over-quarter to $1.48B.
Based on Simplex Trading's 13F filing for Q3 2016, filed 7 Oct 2016.