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 | |
|---|---|---|---|---|---|---|
|
WLH
2026
CALL
DELISTED
WILLIAM LYON HOMES
WLH
| $55K | ﹤0.01% |
637
+488
| +328% | +$8.29K |
|
2027
PUT
Advance Auto Parts
AAP
$3.37B
| $54K | ﹤0.01% |
98
+85
| +654% | +$13.6K |
|
2028
PUT
Alkermes
ALKS
$8.82B
| $54K | ﹤0.01% |
315
+274
| +668% | +$13K |
|
2029
Global Partners
GLP
$1.64B
| $54K | ﹤0.01% |
3,361
-1,895
| -36% | -$27.8K |
|
2030
PUT
Corning
GLW
$126B
| $54K | ﹤0.01% |
815
-12
| -1% | -$268 |
|
2031
PUT
Harley-Davidson
HOG
$2.68B
| $54K | ﹤0.01% |
424
-283
| -40% | -$14.6K |
|
2032
PUT
Intuit
INTU
$81.1B
| $54K | ﹤0.01% |
58
-112
| -66% | -$12.5K |
|
2033
PUT
Iovance Biotherapeutics
IOVA
$2.23B
| $54K | ﹤0.01% |
761
-1,831
| -71% | -$15.5K |
|
|
NOAH
2034
Noah Holdings
NOAH
$588M
| $54K | ﹤0.01% |
2,097
+622
| +42% | +$16.3K |
|
2035
Rocket Pharmaceuticals
RCKT
$348M
| $54K | ﹤0.01% |
1,426
-6,190
| -81% | -$195K |
|
2036
CALL
Thomson Reuters
TRI
$39.4B
| $54K | ﹤0.01% |
437
+191
| +78% | +$9.25K |
|
2037
CALL
Tenaris
TS
$29.1B
| $54K | ﹤0.01% |
142
+136
| +2,267% | +$3.73K |
|
2038
PUT
Wolfspeed
WOLF
$1.2B
| $54K | ﹤0.01% |
147
+13
| +10% | +$336 |
|
2039
XBiotech
XBIT
$69.2M
| $54K | ﹤0.01% |
+4,086
| New | +$59.9K |
|
|
BKS
2040
DELISTED
Barnes & Noble
BKS
| $54K | ﹤0.01% |
+4,833
| New | +$58.3K |
|
|
EMES
2041
CALL
DELISTED
Emerge Energy Services LP
EMES
| $54K | ﹤0.01% |
128
-200
| -61% | -$2.28K |
|
|
EEP
2042
CALL
DELISTED
Enbridge Energy Partners
EEP
| $54K | ﹤0.01% |
363
+200
| +123% | +$4.81K |
|
|
PNK
2043
DELISTED
Pinnacle Entertainment Inc.
PNK
| $54K | ﹤0.01% |
4,429
-2,768
| -38% | -$31.7K |
|
2044
Apogee Enterprises
APOG
$850M
| $53K | ﹤0.01% |
1,207
-830
| -41% | -$38.7K |
|
2045
PUT
Cencora
COR
$60.3B
| $53K | ﹤0.01% |
179
+56
| +46% | +$4.8K |
|
2046
PUT
Cenovus Energy
CVE
$54.6B
| $53K | ﹤0.01% |
111
+104
| +1,486% | +$1.49K |
|
2047
Geron
GERN
$911M
| $53K | ﹤0.01% |
23,834
+7,737
| +48% | +$20K |
|
2048
Seres Therapeutics
MCRB
$48M
| $53K | ﹤0.01% |
+219
| New | +$76.8K |
|
|
SPR
2049
CALL
DELISTED
Spirit AeroSystems
SPR
| $53K | ﹤0.01% |
228
-44
| -16% | -$1.95K |
|
2050
Toll Brothers
TOL
$14B
| $53K | ﹤0.01% |
1,803
+844
| +88% | +$24.4K |
|
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.