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 | |
|---|---|---|---|---|---|---|
251
PUT
The Mosaic Company
MOS
$6.98B
| $1.02M | 0.07% |
3,791
+190
| +5% | +$5.18K |
|
252
Kennametal
KMT
$2.57B
| $1.02M | 0.07% |
+35,060
| New | +$927K |
|
|
MXIM
253
DELISTED
Maxim Integrated Products
MXIM
| $1.01M | 0.07% |
+25,423
| New | +$1M |
|
254
Bunge Global
BG
$23.4B
| $1.01M | 0.07% |
+17,133
| New | +$1.07M |
|
255
PBF Energy
PBF
$7.81B
| $1.01M | 0.07% |
44,751
+17,546
| +64% | +$394K |
|
256
CALL
Wynn Resorts
WYNN
$9.82B
| $1.01M | 0.07% |
2,522
-279
| -10% | -$27.2K |
|
257
Restaurant Brands International
QSR
$25.7B
| $1.01M | 0.07% |
+22,665
| New | +$1.03M |
|
258
iShares MSCI Mexico ETF
EWW
$1.9B
| $1.01M | 0.07% |
+20,829
| New | +$1.05M |
|
259
CALL
Western Digital
WDC
$189B
| $1.01M | 0.07% |
3,691
+513
| +16% | +$19.3K |
|
|
260
CALL
Gilead Sciences
GILD
$165B
| $1M | 0.07% |
5,040
+907
| +22% | +$73.7K |
|
261
ON Semiconductor
ON
$35.4B
| $998K | 0.07% |
+81,070
| New | +$839K |
|
|
SOHU
262
Sohu.com
SOHU
$346M
| $996K | 0.07% |
22,517
+906
| +4% | +$36.6K |
|
|
AGU
263
DELISTED
Agrium
AGU
| $991K | 0.07% |
+10,936
| New | +$1.01M |
|
264
Alkermes
ALKS
$8.62B
| $989K | 0.07% |
21,033
+18,712
| +806% | +$890K |
|
265
PUT
Baidu
BIDU
$36.8B
| $985K | 0.07% |
2,324
-1,449
| -38% | -$251K |
|
|
AVG
266
DELISTED
AVG Technologies N.V.
AVG
| $984K | 0.07% |
39,383
+35,787
| +995% | +$878K |
|
267
Direxion Daily MSCI Emerging Markets Bull 3X ETF
EDC
$161M
| $975K | 0.07% |
15,052
+3,303
| +28% | +$203K |
|
|
268
Western Digital
WDC
$189B
| $974K | 0.07% |
22,060
-93,902
| -81% | -$3.54M |
|
269
CALL
Delta Air Lines
DAL
$55.7B
| $965K | 0.07% |
4,551
-1,084
| -19% | -$41K |
|
|
TSRO
270
DELISTED
TESARO, Inc.
TSRO
| $963K | 0.07% |
+9,616
| New | +$898K |
|
271
Philips
PHG
$25.8B
| $958K | 0.06% |
43,762
+36,523
| +505% | +$748K |
|
|
FINL
272
DELISTED
Finish Line
FINL
| $957K | 0.06% |
41,471
+33,175
| +400% | +$751K |
|
|
FIT
273
PUT
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $952K | 0.06% |
1,736
-291
| -14% | -$4.24K |
|
274
Mid-America Apartment Communities
MAA
$15.6B
| $949K | 0.06% |
+10,105
| New | +$1.01M |
|
275
CALL
American International
AIG
$42.5B
| $948K | 0.06% |
2,116
-574
| -21% | -$32.8K |
|
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.