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 | |
|---|---|---|---|---|---|---|
326
CALL
JD.com
JD
$40.8B
| $793K | 0.05% |
4,127
+1,208
| +41% | +$29.1K |
|
327
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$22.4B
| $793K | 0.05% |
19,836
+452
| +2% | +$18.2K |
|
|
SINA
328
CALL
DELISTED
Sina Corp
SINA
| $791K | 0.05% |
807
+602
| +294% | +$39.9K |
|
329
CALL
CNX Resources
CNX
$4.87B
| $789K | 0.05% |
2,432
+1,190
| +96% | +$17.6K |
|
330
iShares MSCI South Africa ETF
EZA
$542M
| $789K | 0.05% |
+14,083
| New | +$789K |
|
331
Honeywell
HON
$73.8B
| $788K | 0.05% |
+7,523
| New | +$786K |
|
332
PUT
Regeneron Pharmaceuticals
REGN
$68.2B
| $788K | 0.05% |
930
+554
| +147% | +$222K |
|
333
Emcor
EME
$33.9B
| $787K | 0.05% |
+13,203
| New | +$730K |
|
|
HZNP
334
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
| $787K | 0.05% |
43,409
-19,882
| -31% | -$388K |
|
|
XLNX
335
DELISTED
Xilinx Inc
XLNX
| $786K | 0.05% |
14,476
-27,179
| -65% | -$1.4M |
|
336
PUT
IBM
IBM
$195B
| $785K | 0.05% |
7,149
-660
| -8% | -$100K |
|
337
CALL
Weibo
WB
$1.94B
| $777K | 0.05% |
662
+97
| +17% | +$4.01K |
|
338
CALL
Verizon
VZ
$186B
| $770K | 0.05% |
3,080
-629
| -17% | -$33.8K |
|
339
FirstEnergy
FE
$28.5B
| $768K | 0.05% |
23,233
+1,470
| +7% | +$49.9K |
|
340
Applied Materials
AMAT
$444B
| $766K | 0.05% |
25,422
-44,765
| -64% | -$1.25M |
|
341
CALL
APA Corp
APA
$12.7B
| $762K | 0.05% |
1,885
+222
| +13% | +$12.1K |
|
342
Terex
TEX
$7.68B
| $762K | 0.05% |
30,026
+25,889
| +626% | +$604K |
|
343
CALL
Agnico Eagle Mines
AEM
$73.3B
| $759K | 0.05% |
1,392
+366
| +36% | +$20.2K |
|
344
CALL
Nike
NKE
$62.3B
| $759K | 0.05% |
3,229
-1,759
| -35% | -$99.3K |
|
345
Illumina
ILMN
$29.3B
| $758K | 0.05% |
+4,290
| New | +$686K |
|
346
PUT
Salesforce
CRM
$134B
| $757K | 0.05% |
3,153
+128
| +4% | +$9.98K |
|
347
CALL
Halliburton
HAL
$27.4B
| $754K | 0.05% |
3,680
+1,206
| +49% | +$52.6K |
|
|
AERI
348
DELISTED
Aerie Pharmaceuticals
AERI
| $754K | 0.05% |
19,988
+19,477
| +3,812% | +$430K |
|
|
XLNX
349
CALL
DELISTED
Xilinx Inc
XLNX
| $754K | 0.05% |
1,882
+1,613
| +600% | +$82.9K |
|
|
AHGP
350
DELISTED
Alliance Holdings GP
AHGP
| $749K | 0.05% |
28,757
+16,007
| +126% | +$390K |
|
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.