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 | |
|---|---|---|---|---|---|---|
151
CALL
Johnson & Johnson
JNJ
$599B
| $28.9M | 0.09% |
2,091
+341
| +19% | +$45.3K |
|
|
CELG
152
PUT
DELISTED
Celgene Corp
CELG
| $28.6M | 0.09% |
3,197
-3,848
| -55% | -$340K |
|
153
CALL
Lowe's Companies
LOW
$115B
| $28.6M | 0.09% |
2,490
-311
| -11% | -$32.4K |
|
154
PUT
Nike
NKE
$63.7B
| $28.5M | 0.09% |
3,368
+64
| +2% | +$5.14K |
|
155
CALL
Lockheed Martin
LMT
$117B
| $27.9M | 0.09% |
806
+94
| +13% | +$30.3K |
|
156
CALL
Procter & Gamble
PG
$345B
| $27.7M | 0.09% |
3,323
-926
| -22% | -$75.7K |
|
157
CALL
Costco
COST
$412B
| $27.5M | 0.09% |
1,169
-799
| -41% | -$180K |
|
158
CALL
Oracle
ORCL
$366B
| $27.1M | 0.09% |
5,255
+1,825
| +53% | +$88.6K |
|
159
CALL
Baidu
BIDU
$36.8B
| $27M | 0.09% |
1,181
-2,606
| -69% | -$612K |
|
160
CALL
Texas Instruments
TXN
$265B
| $26.8M | 0.09% |
2,497
+555
| +29% | +$61.7K |
|
|
TFCF
161
CALL
DELISTED
Twenty-First Century Fox, Inc. Class B
TFCF
| $26.5M | 0.09% |
5,743
+3,181
| +124% | +$144K |
|
162
Boeing
BA
$161B
| $26.5M | 0.09% |
71,366
-3,240
| -4% | -$1.14M |
|
|
163
PUT
Procter & Gamble
PG
$345B
| $26.5M | 0.09% |
3,185
+743
| +30% | +$60.8K |
|
164
PUT
Ulta Beauty
ULTA
$21B
| $26.2M | 0.08% |
929
+371
| +66% | +$94.6K |
|
165
PUT
Gilead Sciences
GILD
$165B
| $26.1M | 0.08% |
3,386
+333
| +11% | +$25.1K |
|
|
AGN
166
PUT
DELISTED
Allergan plc
AGN
| $25.8M | 0.08% |
1,357
-1,035
| -43% | -$190K |
|
167
CALL
3M
MMM
$89.1B
| $25.6M | 0.08% |
1,454
-46
| -3% | -$7.92K |
|
168
CALL
Spotify
SPOT
$101B
| $25.5M | 0.08% |
1,411
+178
| +14% | +$32.6K |
|
169
CALL
Blackrock
BLK
$163B
| $25.3M | 0.08% |
537
+229
| +74% | +$111K |
|
170
PUT
Target
TGT
$63.4B
| $25.2M | 0.08% |
2,857
-282
| -9% | -$23.5K |
|
|
XYZ
171
CALL
Block Inc
XYZ
$47.8B
| $25.2M | 0.08% |
2,544
+149
| +6% | +$11.5K |
|
|
UCD
172
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $25.1M | 0.08% |
6,055
-843
| -12% | -$3.49M |
|
173
CALL
ProShares UltraShort Health Care
RXD
$3.35M
| $25M | 0.08% |
1,723
-59
| -3% | -$5.54K |
|
|
WBA
174
CALL
DELISTED
Walgreens Boots Alliance
WBA
| $24.8M | 0.08% |
3,408
+421
| +14% | +$28.6K |
|
|
VMW
175
PUT
DELISTED
VMware, Inc
VMW
| $24.8M | 0.08% |
1,586
+593
| +60% | +$90.8K |
|
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.