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 | |
|---|---|---|---|---|---|---|
176
PUT
Nike
NKE
$63.7B
| $1.55M | 0.11% |
4,725
-2,208
| -32% | -$125K |
|
|
177
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$291M
| $1.54M | 0.1% |
48,855
-331,887
| -87% | -$10.4M |
|
178
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $1.52M | 0.1% |
4,409
-3,403
| -44% | -$625K |
|
|
MDCO
179
DELISTED
Medicines Co
MDCO
| $1.5M | 0.1% |
39,737
+31,245
| +368% | +$1.18M |
|
|
LXK
180
DELISTED
Lexmark Intl Inc
LXK
| $1.5M | 0.1% |
37,536
-2,688
| -7% | -$97.7K |
|
181
CALL
NXP Semiconductors
NXPI
$69B
| $1.5M | 0.1% |
1,240
+321
| +35% | +$27.2K |
|
182
J.M. Smucker
SJM
$12B
| $1.49M | 0.1% |
10,966
+8,326
| +315% | +$1.22M |
|
183
PUT
Bristol-Myers Squibb
BMY
$124B
| $1.48M | 0.1% |
4,869
+3,277
| +206% | +$211K |
|
184
Agios Pharmaceuticals
AGIO
$2.22B
| $1.47M | 0.1% |
27,905
+15,604
| +127% | +$680K |
|
185
RTX Corp
RTX
$261B
| $1.47M | 0.1% |
+23,042
| New | +$1.53M |
|
|
SHPG
186
DELISTED
Shire pic
SHPG
| $1.47M | 0.1% |
7,601
-12,688
| -63% | -$2.47M |
|
187
CALL
IBM
IBM
$198B
| $1.47M | 0.1% |
2,942
-907
| -24% | -$138K |
|
188
PUT
Teva Pharmaceuticals
TEVA
$36.5B
| $1.46M | 0.1% |
2,736
+608
| +29% | +$31.7K |
|
189
CALL
Charter Communications
CHTR
$15.7B
| $1.46M | 0.1% |
600
+80
| +15% | +$20.2K |
|
|
CMA
190
DELISTED
Comerica
CMA
| $1.46M | 0.1% |
30,818
+21,003
| +214% | +$952K |
|
|
EGN
191
DELISTED
Energen
EGN
| $1.46M | 0.1% |
25,240
+6,676
| +36% | +$349K |
|
192
CALL
Kinder Morgan
KMI
$72B
| $1.45M | 0.1% |
5,653
+2,235
| +65% | +$47.4K |
|
193
PUT
Chipotle Mexican Grill
CMG
$42.7B
| $1.45M | 0.1% |
50,050
-57,050
| -53% | -$469K |
|
194
United Airlines
UAL
$38.2B
| $1.43M | 0.1% |
27,188
-36,925
| -58% | -$1.78M |
|
195
CALL
Citigroup
C
$223B
| $1.39M | 0.09% |
4,970
-10,545
| -68% | -$480K |
|
|
DISH
196
DELISTED
DISH Network Corp.
DISH
| $1.39M | 0.09% |
25,423
+17,848
| +236% | +$924K |
|
197
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $1.39M | 0.09% |
15,327
-868
| -5% | -$49.9K |
|
198
Vanguard FTSE Emerging Markets ETF
VWO
$121B
| $1.39M | 0.09% |
36,835
+36,444
| +9,321% | +$1.36M |
|
|
ASRT
199
DELISTED
Assertio
ASRT
| $1.38M | 0.09% |
+921
| New | +$1.16M |
|
200
CALL
Biogen
BIIB
$30B
| $1.38M | 0.09% |
799
+175
| +28% | +$51.8K |
|
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.