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 | |
|---|---|---|---|---|---|---|
126
PUT
Lowe's Companies
LOW
$114B
| $34.1M | 0.11% |
2,972
+1,184
| +66% | +$123K |
|
127
CALL
Palo Alto Networks
PANW
$273B
| $33.7M | 0.11% |
8,988
+3,810
| +74% | +$139K |
|
128
CALL
CVS Health
CVS
$140B
| $33.7M | 0.11% |
4,278
+923
| +28% | +$66K |
|
129
PUT
Lam Research
LRCX
$397B
| $33.5M | 0.11% |
22,090
-200
| -0.9% | -$3.42K |
|
130
PUT
McDonald's
MCD
$187B
| $33.4M | 0.11% |
1,994
-19
| -0.9% | -$3.04K |
|
131
PUT
Walt Disney
DIS
$168B
| $33.4M | 0.11% |
2,852
-1,569
| -35% | -$175K |
|
132
CALL
Philip Morris
PM
$297B
| $33M | 0.11% |
4,044
+2,670
| +194% | +$219K |
|
133
CALL
Intuitive Surgical
ISRG
$123B
| $32.9M | 0.11% |
1,719
-231
| -12% | -$41K |
|
134
PUT
UnitedHealth
UNH
$393B
| $32.6M | 0.1% |
1,224
+403
| +49% | +$105K |
|
135
NVIDIA
NVDA
$5.03T
| $32.2M | 0.1% |
4,579,600
+377,880
| +9% | +$2.46M |
|
136
Alphabet (Google) Class C
GOOG
$4.24T
| $31.9M | 0.1% |
533,740
+241,880
| +83% | +$14.5M |
|
137
CALL
Biogen
BIIB
$29.8B
| $31.7M | 0.1% |
898
+260
| +41% | +$89.5K |
|
138
PUT
AbbVie
ABBV
$453B
| $31.5M | 0.1% |
3,331
-201
| -6% | -$19.1K |
|
139
PUT
Regeneron Pharmaceuticals
REGN
$70.4B
| $30.9M | 0.1% |
766
+136
| +22% | +$51.8K |
|
|
TWTR
140
CALL
DELISTED
Twitter, Inc.
TWTR
| $30.7M | 0.1% |
10,772
-3,762
| -26% | -$133K |
|
141
CALL
NXP Semiconductors
NXPI
$69.5B
| $30.6M | 0.1% |
3,584
-1,339
| -27% | -$128K |
|
142
PUT
American Express
AXP
$236B
| $30.6M | 0.1% |
2,871
+302
| +12% | +$31.4K |
|
|
143
Goldman Sachs
GS
$323B
| $30.2M | 0.1% |
134,493
+102,678
| +323% | +$23.9M |
|
144
PUT
PayPal
PYPL
$48.9B
| $30.1M | 0.1% |
3,427
+737
| +27% | +$64.9K |
|
|
ATVI
145
PUT
DELISTED
Activision Blizzard
ATVI
| $30M | 0.1% |
3,601
+1,740
| +93% | +$132K |
|
146
PUT
Chevron
CVX
$385B
| $29.9M | 0.1% |
2,448
+1,139
| +87% | +$138K |
|
147
CALL
United Parcel Service
UPS
$99.2B
| $29.7M | 0.1% |
2,548
+119
| +5% | +$14K |
|
148
PUT
Johnson & Johnson
JNJ
$613B
| $29.5M | 0.09% |
2,138
+93
| +5% | +$12.4K |
|
|
149
CALL
Chevron
CVX
$385B
| $29.3M | 0.09% |
2,395
+557
| +30% | +$67.6K |
|
150
CALL
FedEx
FDX
$76.3B
| $29M | 0.09% |
1,205
-1,047
| -46% | -$254K |
|
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.