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 | |
|---|---|---|---|---|---|---|
|
CHL
1751
CALL
DELISTED
China Mobile Limited
CHL
| $77K | 0.01% |
169
+78
| +86% | +$4.79K |
|
1752
8x8 Inc
EGHT
$247M
| $76K | 0.01% |
+4,962
| New | +$70.6K |
|
1753
ESCO Technologies
ESE
$8.49B
| $76K | 0.01% |
1,648
+1,455
| +754% | +$64.1K |
|
1754
PUT
H&R Block
HRB
$5.18B
| $76K | 0.01% |
529
+407
| +334% | +$9.52K |
|
1755
PUT
Mohawk Industries
MHK
$6.9B
| $76K | 0.01% |
132
+17
| +15% | +$3.49K |
|
1756
CALL
Monster Beverage
MNST
$91.4B
| $76K | 0.01% |
1,878
+336
| +22% | +$8.72K |
|
1757
PUT
Pacific Biosciences
PACB
$422M
| $76K | 0.01% |
490
-52
| -10% | -$435 |
|
1758
Rockwell Automation
ROK
$51.4B
| $76K | 0.01% |
629
-6,946
| -92% | -$812K |
|
1759
CALL
Smith & Wesson
SWBI
$655M
| $76K | 0.01% |
1,332
+568
| +74% | +$12.4K |
|
1760
CALL
Alaunos Therapeutics
TCRT
$4.74M
| $76K | 0.01% |
8
+2
| +33% | +$1.61K |
|
1761
PUT
Zillow
Z
$7.04B
| $76K | 0.01% |
175
-101
| -37% | -$3.61K |
|
|
SIX
1762
DELISTED
Six Flags Entertainment Corp.
SIX
| $76K | 0.01% |
+1,434
| New | +$77.1K |
|
|
XONE
1763
PUT
DELISTED
The ExOne Company
XONE
| $76K | 0.01% |
90
-14
| -13% | -$175 |
|
|
SN
1764
DELISTED
Sanchez Energy Corporation
SN
| $76K | 0.01% |
8,656
-3,395
| -28% | -$26.1K |
|
|
HDP
1765
DELISTED
Hortonworks, Inc.
HDP
| $76K | 0.01% |
9,191
-8,791
| -49% | -$83.4K |
|
|
RHT
1766
CALL
DELISTED
Red Hat Inc
RHT
| $76K | 0.01% |
172
-235
| -58% | -$17.5K |
|
1767
CALL
Amphenol
APH
$188B
| $75K | 0.01% |
1,024
-1,068
| -51% | -$16.2K |
|
1768
CALL
Energizer
ENR
$1.44B
| $75K | 0.01% |
140
+4
| +3% | +$196 |
|
1769
PUT
Ligand Pharmaceuticals
LGND
$6.02B
| $75K | 0.01% |
120
+21
| +21% | +$1.54K |
|
1770
CALL
Liquidity Services
LQDT
$1.17B
| $75K | 0.01% |
392
+381
| +3,464% | +$3.52K |
|
1771
CALL
NextEra Energy
NEE
$187B
| $75K | 0.01% |
1,672
+608
| +57% | +$19.2K |
|
1772
PUT
Ovintiv
OVV
$17.7B
| $75K | 0.01% |
68
-19
| -22% | -$852 |
|
|
SEE
1773
DELISTED
Sealed Air
SEE
| $75K | 0.01% |
1,654
+811
| +96% | +$38.1K |
|
1774
Amplify Junior Silver Miners ETF
SILJ
$3.27B
| $75K | 0.01% |
4,868
+962
| +25% | +$16.5K |
|
|
JCP
1775
CALL
DELISTED
J.C. Penney Company, Inc.
JCP
| $75K | 0.01% |
599
-2,713
| -82% | -$25.8K |
|
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.