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 | |
|---|---|---|---|---|---|---|
1651
CALL
Alaska Air
ALK
$5.15B
| $1.27M | ﹤0.01% |
184
-200
| -52% | -$13K |
|
|
COUP
1652
CALL
DELISTED
Coupa Software Incorporated
COUP
| $1.26M | ﹤0.01% |
160
+8
| +5% | +$556 |
|
1653
CALL
Acadia Pharmaceuticals
ACAD
$4.25B
| $1.26M | ﹤0.01% |
609
+361
| +146% | +$5.68K |
|
1654
PUT
InterDigital
IDCC
$6.68B
| $1.26M | ﹤0.01% |
158
-25
| -14% | -$2.05K |
|
|
ESV
1655
CALL
DELISTED
Ensco Rowan plc
ESV
| $1.26M | ﹤0.01% |
375
+253
| +207% | +$7.24K |
|
|
CTRA
1656
PUT
DELISTED
Coterra Energy
CTRA
| $1.26M | ﹤0.01% |
560
-80
| -13% | -$1.87K |
|
|
HIMX
1657
CALL
Himax Technologies
HIMX
$2.2B
| $1.26M | ﹤0.01% |
2,139
+1,774
| +486% | +$11.8K |
|
|
SINA
1658
PUT
DELISTED
Sina Corp
SINA
| $1.26M | ﹤0.01% |
185
-123
| -40% | -$9.21K |
|
1659
PUT
Howard Hughes
HHH
$3.93B
| $1.25M | ﹤0.01% |
106
+45
| +74% | +$5.65K |
|
1660
PUT
Caesars Entertainment
CZR
$6.1B
| $1.25M | ﹤0.01% |
258
+228
| +760% | +$10.3K |
|
1661
CALL
Teradyne
TER
$54.8B
| $1.25M | ﹤0.01% |
339
+243
| +253% | +$9.79K |
|
|
RP
1662
CALL
DELISTED
RealPage, Inc.
RP
| $1.25M | ﹤0.01% |
190
-54
| -22% | -$3.22K |
|
|
FOLD
1663
CALL
DELISTED
Amicus Therapeutics
FOLD
| $1.25M | ﹤0.01% |
1,034
-982
| -49% | -$13.7K |
|
|
CZR
1664
PUT
DELISTED
Caesars Entertainment Corporation
CZR
| $1.25M | ﹤0.01% |
1,220
+747
| +158% | +$7.86K |
|
1665
CALL
Williams-Sonoma
WSM
$26.7B
| $1.25M | ﹤0.01% |
380
+54
| +17% | +$1.71K |
|
1666
PUT
Ingersoll Rand
IR
$33B
| $1.25M | ﹤0.01% |
440
+396
| +900% | +$11.1K |
|
1667
Direxion Daily MSCI Brazil Bull 2X ETF
BRZU
$100M
| $1.25M | ﹤0.01% |
1,904
+649
| +52% | +$451K |
|
1668
PUT
Vale
VALE
$62.9B
| $1.24M | ﹤0.01% |
838
-102
| -11% | -$1.38K |
|
|
NUVA
1669
PUT
DELISTED
NuVasive, Inc.
NUVA
| $1.24M | ﹤0.01% |
175
+149
| +573% | +$9.48K |
|
|
PVG
1670
PUT
DELISTED
PRETIUM RESOURCES INC.
PVG
| $1.24M | ﹤0.01% |
1,632
+1,533
| +1,548% | +$12.6K |
|
|
TELL
1671
CALL
DELISTED
Tellurian Inc.
TELL
| $1.24M | ﹤0.01% |
1,383
+1,349
| +3,968% | +$11.1K |
|
1672
PUT
Globe Life
GL
$13.5B
| $1.24M | ﹤0.01% |
143
+107
| +297% | +$9.24K |
|
|
GOOS
1673
PUT
Canada Goose Holdings
GOOS
$868M
| $1.24M | ﹤0.01% |
192
-132
| -41% | -$7.7K |
|
1674
CALL
Perrigo
PRGO
$1.4B
| $1.24M | ﹤0.01% |
175
-5
| -3% | -$375 |
|
1675
PUT
Edison International
EIX
$30.7B
| $1.24M | ﹤0.01% |
183
+149
| +438% | +$9.97K |
|
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.