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 | |
|---|---|---|---|---|---|---|
|
WW
226
PUT
DELISTED
WW International
WW
| $17.5M | 0.06% |
2,425
-590
| -20% | -$47.9K |
|
227
CALL
Occidental Petroleum
OXY
$57B
| $17.3M | 0.06% |
2,109
+162
| +8% | +$13.1K |
|
228
CALL
iShares Morningstar Value ETF
ILCV
$1.3B
| $17.3M | 0.06% |
3,650
-278
| -7% | -$14.8K |
|
|
CGC
229
PUT
Canopy Growth
CGC
$393M
| $17.1M | 0.06% |
352
+284
| +418% | +$105K |
|
230
CALL
BP
BP
$111B
| $17M | 0.05% |
3,865
-1,231
| -24% | -$51.5K |
|
231
PUT
EOG Resources
EOG
$77.1B
| $16.9M | 0.05% |
1,328
+259
| +24% | +$31.5K |
|
232
PUT
Kohl's
KSS
$2.13B
| $16.9M | 0.05% |
2,271
+678
| +43% | +$51.3K |
|
233
CALL
Accenture
ACN
$86B
| $16.9M | 0.05% |
994
+162
| +19% | +$27K |
|
234
PUT
Capital One
COF
$124B
| $16.9M | 0.05% |
1,782
+614
| +53% | +$59.7K |
|
235
CALL
Bristol-Myers Squibb
BMY
$125B
| $16.8M | 0.05% |
2,707
-1,315
| -33% | -$78K |
|
236
PUT
Shopify
SHOP
$152B
| $16.7M | 0.05% |
10,170
-4,130
| -29% | -$62.9K |
|
237
CALL
Coca-Cola
KO
$355B
| $16.6M | 0.05% |
3,586
+1,756
| +96% | +$80.2K |
|
238
PUT
Charter Communications
CHTR
$15.7B
| $16.6M | 0.05% |
508
+118
| +30% | +$36K |
|
239
iShares China Large-Cap ETF
FXI
$4.29B
| $16.5M | 0.05% |
+386,079
| New | +$16.3M |
|
240
PUT
Marathon Petroleum
MPC
$93.2B
| $16.4M | 0.05% |
2,056
+795
| +63% | +$62.9K |
|
|
TFCF
241
PUT
DELISTED
Twenty-First Century Fox, Inc. Class B
TFCF
| $16.1M | 0.05% |
3,474
-2,431
| -41% | -$110K |
|
|
SHPG
242
PUT
DELISTED
Shire pic
SHPG
| $16M | 0.05% |
883
+200
| +29% | +$34.6K |
|
243
Roku
ROKU
$21.3B
| $16M | 0.05% |
218,897
+194,280
| +789% | +$11.1M |
|
244
PUT
O'Reilly Automotive
ORLY
$72.2B
| $15.9M | 0.05% |
6,870
+5,280
| +332% | +$112K |
|
245
CALL
Morgan Stanley
MS
$345B
| $15.6M | 0.05% |
3,360
-134
| -4% | -$6.54K |
|
246
CALL
Pfizer
PFE
$142B
| $15.6M | 0.05% |
3,734
-99
| -3% | -$3.81K |
|
247
CALL
Royal Caribbean
RCL
$77.1B
| $15.5M | 0.05% |
1,190
+766
| +181% | +$89.8K |
|
248
PUT
PepsiCo
PEP
$185B
| $15.4M | 0.05% |
1,376
-198
| -13% | -$22.4K |
|
|
249
PUT
Bristol-Myers Squibb
BMY
$125B
| $15.3M | 0.05% |
2,459
+131
| +6% | +$7.77K |
|
250
CALL
Las Vegas Sands
LVS
$30.5B
| $15.2M | 0.05% |
2,561
+985
| +63% | +$66.1K |
|
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.