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 | |
|---|---|---|---|---|---|---|
|
VIAB
76
DELISTED
Viacom Inc. Class B
VIAB
| $3.36M | 0.23% |
88,108
+40,070
| +83% | +$1.66M |
|
|
YHOO
77
DELISTED
Yahoo Inc
YHOO
| $3.35M | 0.23% |
77,820
-58,077
| -43% | -$2.38M |
|
78
CALL
Direxion Daily Technology Bull 3x ETF
TECL
$5.6B
| $3.32M | 0.23% |
44,610
-3,430
| -7% | -$15.3K |
|
79
The Mosaic Company
MOS
$6.98B
| $3.32M | 0.23% |
135,813
+76,912
| +131% | +$2.1M |
|
80
Trip.com Group
TCOM
$27.5B
| $3.27M | 0.22% |
+70,190
| New | +$3.13M |
|
|
CIT
81
DELISTED
CIT Group Inc.
CIT
| $3.24M | 0.22% |
+89,385
| New | +$3.12M |
|
82
CALL
JPMorgan Chase
JPM
$918B
| $3.23M | 0.22% |
7,017
-1,443
| -17% | -$94.1K |
|
83
NXP Semiconductors
NXPI
$69B
| $3.22M | 0.22% |
31,594
+27,744
| +721% | +$2.35M |
|
84
Coca-Cola
KO
$353B
| $3.17M | 0.22% |
74,969
+19,858
| +36% | +$870K |
|
85
United Parcel Service
UPS
$98.9B
| $3.15M | 0.21% |
+28,806
| New | +$3.15M |
|
|
X
86
DELISTED
US Steel
X
| $3.14M | 0.21% |
+166,400
| New | +$3.43M |
|
|
GG
87
DELISTED
Goldcorp Inc
GG
| $3.12M | 0.21% |
188,860
+77,238
| +69% | +$1.36M |
|
88
PUT
Amazon
AMZN
$2.66T
| $3.05M | 0.21% |
108,460
-5,260
| -5% | -$201K |
|
89
CALL
Intel
INTC
$530B
| $3.03M | 0.21% |
3,846
-949
| -20% | -$33.6K |
|
|
UCD
90
CALL
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $3.03M | 0.21% |
15,975
-8,203
| -34% | -$268K |
|
|
LNKD
91
CALL
DELISTED
LinkedIn Corporation
LNKD
| $2.93M | 0.2% |
5,118
-3,288
| -39% | -$630K |
|
|
92
CALL
SPDR Gold Trust
GLD
$132B
| $2.91M | 0.2% |
11,458
-4,788
| -29% | -$610K |
|
93
Ulta Beauty
ULTA
$21B
| $2.9M | 0.2% |
12,165
+978
| +9% | +$247K |
|
94
Lam Research
LRCX
$403B
| $2.89M | 0.2% |
305,430
+259,920
| +571% | +$2.36M |
|
95
General Mills
GIS
$19.8B
| $2.87M | 0.19% |
+44,954
| New | +$3.13M |
|
|
SCTY
96
PUT
DELISTED
SolarCity Corporation
SCTY
| $2.83M | 0.19% |
4,359
-1,642
| -27% | -$36.8K |
|
|
SYT
97
DELISTED
Syngenta Ag
SYT
| $2.81M | 0.19% |
+32,088
| New | +$2.64M |
|
98
Autodesk
ADSK
$44.6B
| $2.79M | 0.19% |
+38,506
| New | +$2.43M |
|
|
CAB
99
DELISTED
Cabela's Inc
CAB
| $2.78M | 0.19% |
50,682
+45,468
| +872% | +$2.33M |
|
100
Amgen
AMGN
$198B
| $2.74M | 0.19% |
16,414
-11,259
| -41% | -$1.9M |
|
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.