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 | |
|---|---|---|---|---|---|---|
4226
Ameren
AEE
$30.4B
| $5K | ﹤0.01% |
104
-345
| -77% | -$17.6K |
|
4227
CALL
Argan
AGX
$6.9B
| $5K | ﹤0.01% |
+3
| New | +$147 |
|
4228
CALL
AMC Entertainment Holdings
AMC
$2.45B
| $5K | ﹤0.01% |
2
-5
| -71% | -$1.5K |
|
4229
Angi Inc
ANGI
$247M
| $5K | ﹤0.01% |
+52
| New | +$4.56K |
|
4230
PUT
Air Products & Chemicals
APD
$65.5B
| $5K | ﹤0.01% |
21
-176
| -89% | -$24.4K |
|
|
DCH
4231
CALL
Dauch Corp
DCH
$1.31B
| $5K | ﹤0.01% |
148
+26
| +21% | +$437 |
|
4232
CALL
Booz Allen Hamilton
BAH
$8.44B
| $5K | ﹤0.01% |
+26
| New | +$793 |
|
4233
CALL
Braskem
BAK
$901M
| $5K | ﹤0.01% |
58
+4
| +7% | +$52 |
|
4234
CALL
Brink's
BCO
$5.01B
| $5K | ﹤0.01% |
+26
| New | +$893 |
|
4235
PUT
B&G Foods
BGS
$303M
| $5K | ﹤0.01% |
76
+26
| +52% | +$1.25K |
|
4236
PUT
Black Hills Corp
BKH
$5.55B
| $5K | ﹤0.01% |
+45
| New | +$2.74K |
|
4237
PUT
Bloomin' Brands
BLMN
$754M
| $5K | ﹤0.01% |
12
-60
| -83% | -$1.11K |
|
4238
PUT
Box
BOX
$4.49B
| $5K | ﹤0.01% |
74
-3
| -4% | -$38 |
|
4239
Caleres
CAL
$432M
| $5K | ﹤0.01% |
200
-1,161
| -85% | -$29.5K |
|
4240
CALL
Community Bank
CBU
$3.39B
| $5K | ﹤0.01% |
16
-25
| -61% | -$1.13K |
|
4241
PUT
Coca-Cola Europacific Partners
CCEP
$49.1B
| $5K | ﹤0.01% |
206
-121
| -37% | -$4.62K |
|
4242
CALL
Cerus
CERS
$575M
| $5K | ﹤0.01% |
287
+31
| +12% | +$203 |
|
4243
PUT
CEVA Inc
CEVA
$831M
| $5K | ﹤0.01% |
+46
| New | +$1.43K |
|
4244
CALL
Compugen
CGEN
$212M
| $5K | ﹤0.01% |
+107
| New | +$724 |
|
4245
CALL
Clearwater Paper
CLW
$348M
| $5K | ﹤0.01% |
11
-4
| -27% | -$253 |
|
4246
PUT
Canadian Imperial Bank of Commerce
CM
$106B
| $5K | ﹤0.01% |
106
-522
| -83% | -$20.1K |
|
4247
Copa Holdings
CPA
$5.56B
| $5K | ﹤0.01% |
57
-809
| -93% | -$61.4K |
|
4248
CALL
Consumer Portfolio Services
CPSS
$209M
| $5K | ﹤0.01% |
+55
| New | +$223 |
|
4249
PUT
Carter's
CRI
$1.43B
| $5K | ﹤0.01% |
14
-17
| -55% | -$1.71K |
|
4250
PUT
CoStar Group
CSGP
$12.2B
| $5K | ﹤0.01% |
+200
| New | +$4.26K |
|
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.