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 |
Apple
AAPL
|
+$34.5M |
| 2 |
Micron Technology
MU
|
+$33.9M |
| 3 |
Berkshire Hathaway Class B
BRK.B
|
+$30.8M |
| 4 |
NVIDIA
NVDA
|
+$23.5M |
| 5 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$22.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
TWX
Time Warner Inc
TWX
|
+$34.8M |
| 2 |
Amazon
AMZN
|
+$31.2M |
| 3 |
Tesla
TSLA
|
+$17.6M |
| 4 |
Netflix
NFLX
|
+$15.5M |
| 5 |
Advanced Micro Devices
AMD
|
+$12.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 1.23% |
| 2 | Consumer Discretionary | 0.92% |
| 3 | Communication Services | 0.73% |
| 4 | Financials | 0.62% |
| 5 | Industrials | 0.6% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
WBA
276
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $13M | 0.05% |
2,170
+672
| +45% | +$43.3K |
|
277
CALL
Altria Group
MO
$121B
| $13M | 0.05% |
2,286
+266
| +13% | +$15.3K |
|
|
AABA
278
PUT
DELISTED
Altaba Inc
AABA
| $12.9M | 0.05% |
1,768
-299
| -14% | -$22.4K |
|
279
PUT
Bristol-Myers Squibb
BMY
$124B
| $12.9M | 0.05% |
2,328
-926
| -28% | -$50K |
|
280
PUT
Intel
INTC
$526B
| $12.8M | 0.05% |
2,585
-2,449
| -49% | -$130K |
|
|
TFCF
281
CALL
DELISTED
Twenty-First Century Fox, Inc. Class B
TFCF
| $12.7M | 0.05% |
2,562
+1,375
| +116% | +$53.8K |
|
|
PPLI
282
PUT
People Inc
PPLI
$3.23B
| $12.6M | 0.05% |
4,633
+2,719
| +142% | +$74.5K |
|
|
SHPG
283
CALL
DELISTED
Shire pic
SHPG
| $12.6M | 0.05% |
748
+211
| +39% | +$34K |
|
284
CALL
Campbell Soup
CPB
$6.62B
| $12.6M | 0.05% |
3,109
+2,930
| +1,637% | +$114K |
|
285
PUT
Spotify
SPOT
$98.4B
| $12.6M | 0.05% |
+746
| New | +$119K |
|
286
PUT
Cisco
CSCO
$444B
| $12.5M | 0.05% |
2,899
+782
| +37% | +$34.2K |
|
287
CALL
Cigna
CI
$76.7B
| $12.4M | 0.05% |
731
+155
| +27% | +$26.8K |
|
288
PUT
Halliburton
HAL
$27.5B
| $12.2M | 0.05% |
2,716
+162
| +6% | +$8.07K |
|
289
McDonald's
MCD
$188B
| $12.2M | 0.05% |
77,996
+36,234
| +87% | +$5.88M |
|
290
Deere & Co
DE
$164B
| $12.2M | 0.05% |
87,301
+67,914
| +350% | +$10M |
|
291
CALL
Vanguard FTSE Europe ETF
VGK
$30.2B
| $12.2M | 0.05% |
2,306
-204
| -8% | -$12K |
|
|
SIVB
292
PUT
DELISTED
SVB Financial Group
SIVB
| $12.1M | 0.05% |
419
-44
| -10% | -$12.9K |
|
293
PUT
Occidental Petroleum
OXY
$57.2B
| $12.1M | 0.05% |
1,443
+175
| +14% | +$14K |
|
294
PUT
Delta Air Lines
DAL
$55.2B
| $12.1M | 0.05% |
2,434
-229
| -9% | -$12.2K |
|
295
CALL
Las Vegas Sands
LVS
$30.4B
| $12M | 0.05% |
1,576
-165
| -9% | -$12.6K |
|
296
PUT
PG&E
PCG
$39.7B
| $12M | 0.05% |
2,825
+1,938
| +218% | +$84K |
|
297
CALL
Starbucks
SBUX
$119B
| $12M | 0.05% |
2,448
-851
| -26% | -$48.3K |
|
298
CALL
Medtronic
MDT
$105B
| $11.9M | 0.05% |
1,387
-53
| -4% | -$4.43K |
|
299
SPDR Gold Trust
GLD
$133B
| $11.8M | 0.05% |
+99,473
| New | +$12.3M |
|
300
PUT
United Rentals
URI
$64.5B
| $11.7M | 0.05% |
795
+162
| +26% | +$26.5K |
|
Similar funds
Simplex Trading's Q2 2018 Portfolio in Review
As of Q2 2018, Simplex Trading held 8,400 positions worth $25.5B, up 1,022% from $2.27B the previous quarter. Its ten largest holdings account for 29% of the portfolio.
Simplex Trading's Q2 2018 filing shows 2,282 new, 2,314 increased, 2,591 reduced and 1,035 closed positions. Its largest new stake was Alphabet (Google) Class C: 291,860 shares worth $16.3M. The largest sale was Time Warner Inc, an estimated $34.8M.
By sector, the portfolio is most concentrated in Technology at 1.2% of assets, down from 6.2% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2018 buy was Alphabet (Google) Class C: 291,860 shares worth $16.3M.
- Simplex Trading added most to Apple in Q2 2018, an estimated $34.5M increase.
- Simplex Trading's biggest Q2 2018 reduction was Amazon, cutting an estimated $31.2M.
- Simplex Trading fully exited Time Warner Inc in Q2 2018, selling an estimated $34.8M.
- Simplex Trading's ten largest holdings make up 29% of its $25.5B portfolio in Q2 2018.
- Simplex Trading opened 2,282 new positions and closed 1,035 in Q2 2018.
- Simplex Trading's portfolio value rose 1,022% quarter-over-quarter to $25.5B.
Based on Simplex Trading's 13F filing for Q2 2018, filed 30 Jul 2018.