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 | |
|---|---|---|---|---|---|---|
226
Direxion Daily Financial Bull 3x ETF
FAS
$2.38B
| $1.13M | 0.08% |
38,798
-59,626
| -61% | -$1.71M |
|
227
ProShares UltraPro S&P 500
UPRO
$5.31B
| $1.12M | 0.08% |
91,620
-12,264
| -12% | -$149K |
|
|
MSCC
228
DELISTED
Microsemi Corp
MSCC
| $1.12M | 0.08% |
+26,691
| New | +$1.02M |
|
229
Skyworks Solutions
SWKS
$8.99B
| $1.11M | 0.08% |
14,575
+5,425
| +59% | +$378K |
|
230
Deutsche Bank
DB
$67.7B
| $1.1M | 0.07% |
+94,497
| New | +$1.16M |
|
|
CCMP
231
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $1.1M | 0.07% |
20,844
+11,089
| +114% | +$545K |
|
232
Corning
GLW
$140B
| $1.1M | 0.07% |
+46,499
| New | +$1.04M |
|
233
Huntington Bancshares
HBAN
$36.6B
| $1.1M | 0.07% |
111,225
+104,005
| +1,441% | +$990K |
|
|
CBI
234
DELISTED
Chicago Bridge & Iron Nv
CBI
| $1.09M | 0.07% |
39,014
+18,532
| +90% | +$601K |
|
235
Boeing
BA
$161B
| $1.09M | 0.07% |
8,284
-10,755
| -56% | -$1.42M |
|
236
CALL
American Airlines Group
AAL
$10.1B
| $1.09M | 0.07% |
4,450
-514
| -10% | -$18.2K |
|
237
International Paper
IP
$19.2B
| $1.09M | 0.07% |
+23,918
| New | +$1.05M |
|
238
Hain Celestial
HAIN
$53.2M
| $1.08M | 0.07% |
30,428
+24,952
| +456% | +$1.09M |
|
|
239
PUT
Wells Fargo
WFC
$266B
| $1.08M | 0.07% |
7,235
+2,550
| +54% | +$122K |
|
|
AET
240
DELISTED
Aetna Inc
AET
| $1.08M | 0.07% |
+9,328
| New | +$1.09M |
|
241
TE Connectivity
TEL
$61B
| $1.06M | 0.07% |
16,549
+14,710
| +800% | +$900K |
|
|
SE
242
CALL
DELISTED
Spectra Energy Corp Wi
SE
| $1.06M | 0.07% |
1,532
+689
| +82% | +$26.2K |
|
|
BATS
243
DELISTED
Bats Global Markets, Inc.
BATS
| $1.05M | 0.07% |
+35,041
| New | +$901K |
|
244
Autohome
ATHM
$2.47B
| $1.05M | 0.07% |
+43,165
| New | +$1M |
|
245
Aflac
AFL
$62.9B
| $1.04M | 0.07% |
29,010
-43,322
| -60% | -$1.58M |
|
246
Altria Group
MO
$122B
| $1.03M | 0.07% |
+16,355
| New | +$1.09M |
|
247
Home Depot
HD
$331B
| $1.03M | 0.07% |
8,005
-12,061
| -60% | -$1.61M |
|
|
KANG
248
DELISTED
iKang Healthcare Group, Inc.
KANG
| $1.03M | 0.07% |
56,993
+17,058
| +43% | +$314K |
|
|
249
PUT
Boeing
BA
$161B
| $1.03M | 0.07% |
2,070
-3,529
| -63% | -$465K |
|
250
Mohawk Industries
MHK
$6.58B
| $1.02M | 0.07% |
5,112
+603
| +13% | +$124K |
|
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.