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 | |
|---|---|---|---|---|---|---|
151
CALL
Palo Alto Networks
PANW
$279B
| $1.76M | 0.12% |
5,352
+156
| +3% | +$3.56K |
|
152
Ionis Pharmaceuticals
IONS
$8.75B
| $1.73M | 0.12% |
47,310
+40,534
| +598% | +$1.27M |
|
|
FIT
153
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $1.73M | 0.12% |
116,680
+92,696
| +386% | +$1.35M |
|
154
American Tower
AMT
$77.8B
| $1.71M | 0.12% |
+15,126
| New | +$1.73M |
|
|
ILG
155
DELISTED
ILG, Inc Common Stock
ILG
| $1.7M | 0.12% |
99,246
+36,263
| +58% | +$627K |
|
156
Synaptics
SYNA
$4.44B
| $1.7M | 0.12% |
29,017
+10,933
| +60% | +$601K |
|
157
CALL
Qualcomm
QCOM
$183B
| $1.7M | 0.12% |
2,609
-1,527
| -37% | -$92.9K |
|
|
AGN
158
CALL
DELISTED
Allergan plc
AGN
| $1.69M | 0.11% |
3,395
+792
| +30% | +$194K |
|
159
PTC Therapeutics
PTCT
$6.51B
| $1.68M | 0.11% |
+120,210
| New | +$977K |
|
160
BioMarin Pharmaceuticals
BMRN
$11.4B
| $1.68M | 0.11% |
18,131
+1,528
| +9% | +$144K |
|
161
Tesla
TSLA
$1.42T
| $1.63M | 0.11% |
+120,195
| New | +$1.74M |
|
|
LSI
162
DELISTED
Life Storage, Inc.
LSI
| $1.63M | 0.11% |
27,519
+27,196
| +8,420% | +$1.74M |
|
163
ProShares Ultra QQQ
QLD
$13.5B
| $1.63M | 0.11% |
301,456
-84,704
| -22% | -$433K |
|
164
ProShares Ultra S&P500
SSO
$8.04B
| $1.63M | 0.11% |
+183,344
| New | +$1.62M |
|
165
CALL
FedEx
FDX
$73.1B
| $1.63M | 0.11% |
1,602
+443
| +38% | +$72.5K |
|
|
VXZ
166
CALL
DELISTED
iPath S&P 500 VIX Mid-Term Futures ETN due 1/30/2019
VXZ
| $1.62M | 0.11% |
13,273
+13,266
| +189,514% | +$526K |
|
167
Expedia Group
EXPE
$31.8B
| $1.61M | 0.11% |
+13,825
| New | +$1.56M |
|
|
B
168
CALL
Barrick Mining
B
$60.9B
| $1.59M | 0.11% |
5,659
+583
| +11% | +$11.6K |
|
|
YHOO
169
CALL
DELISTED
Yahoo Inc
YHOO
| $1.59M | 0.11% |
4,771
+2,343
| +96% | +$96.1K |
|
170
PUT
Bank of America
BAC
$430B
| $1.58M | 0.11% |
7,959
-1,270
| -14% | -$18.9K |
|
171
NextEra Energy
NEE
$183B
| $1.58M | 0.11% |
51,824
+4,960
| +11% | +$156K |
|
|
PX
172
DELISTED
Praxair Inc
PX
| $1.58M | 0.11% |
13,077
+3,771
| +41% | +$446K |
|
|
ITCI
173
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $1.58M | 0.11% |
+103,463
| New | +$4.18M |
|
174
Regeneron Pharmaceuticals
REGN
$70.5B
| $1.56M | 0.11% |
3,881
-983
| -20% | -$394K |
|
|
WP
175
DELISTED
Worldpay, Inc.
WP
| $1.56M | 0.11% |
27,699
+27,258
| +6,181% | +$1.51M |
|
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.