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 |
Amazon
AMZN
|
+$148M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$67.3M |
| 3 |
Meta Platforms (Facebook)
META
|
+$63.2M |
| 4 |
Goldman Sachs
GS
|
+$23.9M |
| 5 |
Citigroup
C
|
+$23.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Berkshire Hathaway Class B
BRK.B
|
+$47.5M |
| 2 |
Apple
AAPL
|
+$46M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$44.5M |
| 4 |
Micron Technology
MU
|
+$29.1M |
| 5 |
Adobe
ADBE
|
+$22.2M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 1.13% |
| 2 | Communication Services | 0.89% |
| 3 | Technology | 0.68% |
| 4 | Industrials | 0.51% |
| 5 | Healthcare | 0.44% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
76
PUT
Altria Group
MO
$125B
| $53.3M | 0.17% |
8,842
+3,184
| +56% | +$189K |
|
77
CALL
JPMorgan Chase
JPM
$901B
| $52.7M | 0.17% |
4,939
+977
| +25% | +$111K |
|
78
CALL
McDonald's
MCD
$188B
| $52.2M | 0.17% |
3,121
+300
| +11% | +$48.1K |
|
79
CALL
Wynn Resorts
WYNN
$9.93B
| $51.4M | 0.17% |
4,049
+1,784
| +79% | +$265K |
|
80
PUT
FedEx
FDX
$73.1B
| $50.5M | 0.16% |
2,098
+531
| +34% | +$129K |
|
81
PUT
Electronic Arts
EA
$52.4B
| $49.9M | 0.16% |
4,138
+3,037
| +276% | +$391K |
|
82
PUT
Costco
COST
$412B
| $49.5M | 0.16% |
2,107
-55
| -3% | -$12.4K |
|
83
PUT
Biogen
BIIB
$29.5B
| $48.8M | 0.16% |
1,382
+329
| +31% | +$113K |
|
84
PUT
AutoZone
AZO
$48.9B
| $48.8M | 0.16% |
629
+336
| +115% | +$247K |
|
85
PUT
Union Pacific
UNP
$176B
| $48.8M | 0.16% |
2,994
+848
| +40% | +$128K |
|
86
CALL
Mastercard
MA
$484B
| $48.6M | 0.16% |
2,181
+379
| +21% | +$79.1K |
|
87
CALL
Tilray
TLRY
$522M
| $48.5M | 0.16% |
+338
| New | +$217K |
|
88
CALL
UnitedHealth
UNH
$396B
| $48.3M | 0.16% |
1,814
-448
| -20% | -$117K |
|
89
PUT
ExxonMobil
XOM
$629B
| $48.1M | 0.15% |
5,654
+1,440
| +34% | +$118K |
|
90
CALL
Salesforce
CRM
$139B
| $47.9M | 0.15% |
3,009
-990
| -25% | -$147K |
|
|
STZ.B
91
CALL
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $47.8M | 0.15% |
2,215
+348
| +19% | +$74K |
|
|
92
PUT
Citigroup
C
$216B
| $47M | 0.15% |
6,552
-4,298
| -40% | -$304K |
|
93
CALL
VanEck Gold Miners ETF
GDX
$22.7B
| $46.3M | 0.15% |
10,706
-1,962
| -15% | -$39.2K |
|
|
STZ.B
94
PUT
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $46.1M | 0.15% |
2,136
+1,145
| +116% | +$243K |
|
95
CALL
Qualcomm
QCOM
$183B
| $46M | 0.15% |
6,392
+1,437
| +29% | +$94.6K |
|
96
PUT
Align Technology
ALGN
$12.5B
| $45.9M | 0.15% |
1,173
+139
| +13% | +$51.3K |
|
97
CALL
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $45.6M | 0.15% |
7,247
-1,691
| -19% | -$159K |
|
|
98
PUT
Adobe
ADBE
$90.3B
| $45.5M | 0.15% |
1,687
-684
| -29% | -$176K |
|
99
PUT
Cigna
CI
$75.1B
| $44.3M | 0.14% |
2,125
+1,679
| +376% | +$311K |
|
100
PUT
Broadcom
AVGO
$1.84T
| $44.2M | 0.14% |
17,930
+3,200
| +22% | +$71.8K |
|
Similar funds
Simplex Trading's Q3 2018 Portfolio in Review
As of Q3 2018, Simplex Trading held 8,699 positions worth $31.1B, up 22% from $25.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q3 2018 filing shows 1,336 new, 3,066 increased, 2,755 reduced and 1,315 closed positions. Its largest new stake was Invesco QQQ Trust: 371,806 shares worth $69.1M. The largest sale was Berkshire Hathaway Class B, an estimated $47.5M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 1.1% of assets, up from 0.92% a quarter earlier, followed by Communication Services and Technology.
- Simplex Trading's largest Q3 2018 buy was Invesco QQQ Trust: 371,806 shares worth $69.1M.
- Simplex Trading added most to Amazon in Q3 2018, an estimated $148M increase.
- Simplex Trading's biggest Q3 2018 reduction was Apple, cutting an estimated $46M.
- Simplex Trading fully exited Berkshire Hathaway Class B in Q3 2018, selling an estimated $47.5M.
- Simplex Trading's ten largest holdings make up 34% of its $31.1B portfolio in Q3 2018.
- Simplex Trading opened 1,336 new positions and closed 1,315 in Q3 2018.
- Simplex Trading's portfolio value rose 22% quarter-over-quarter to $31.1B.
Based on Simplex Trading's 13F filing for Q3 2018, filed 23 Oct 2018.