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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
DQ
2051
Daqo New Energy
DQ
$790M
| $1.11M | ﹤0.01% |
74,835
+57,950
| +343% | +$634K |
|
2052
CALL
HDFC Bank
HDB
$119B
| $1.11M | ﹤0.01% |
488
+222
| +83% | +$4.56K |
|
2053
PUT
Viper Energy
VNOM
$8.81B
| $1.11M | ﹤0.01% |
1,069
+899
| +529% | +$8.62K |
|
2054
Ralph Lauren
RL
$22.2B
| $1.11M | ﹤0.01% |
15,263
+8,341
| +120% | +$613K |
|
2055
W.P. Carey
WPC
$17.1B
| $1.1M | ﹤0.01% |
16,687
+8,485
| +103% | +$527K |
|
|
RADA
2056
CALL
DELISTED
Rada Electronic Industries Ltd
RADA
| $1.1M | ﹤0.01% |
1,691
+179
| +12% | +$886 |
|
|
RWT
2057
PUT
Redwood Trust
RWT
$616M
| $1.1M | ﹤0.01% |
1,578
+1,510
| +2,221% | +$7.45K |
|
|
VNET
2058
VNET Group
VNET
$2.05B
| $1.1M | ﹤0.01% |
+46,280
| New | +$746K |
|
2059
CALL
Bloom Energy
BE
$52.6B
| $1.1M | ﹤0.01% |
1,013
-106
| -9% | -$828 |
|
2060
CALL
ScottsMiracle-Gro
SMG
$4.03B
| $1.1M | ﹤0.01% |
82
+18
| +28% | +$2.32K |
|
2061
CenterPoint Energy
CNP
$29.1B
| $1.1M | ﹤0.01% |
58,925
+58,911
| +420,793% | +$1.01M |
|
2062
PUT
GameStop
GME
$9.5B
| $1.1M | ﹤0.01% |
10,144
+7,192
| +244% | +$8.3K |
|
|
NVRO
2063
CALL
DELISTED
NEVRO CORP.
NVRO
| $1.1M | ﹤0.01% |
92
-21
| -19% | -$2.49K |
|
2064
PUT
Cognex
CGNX
$10.3B
| $1.1M | ﹤0.01% |
184
+6
| +3% | +$326 |
|
2065
CALL
Levi Strauss
LEVI
$9.44B
| $1.1M | ﹤0.01% |
820
+266
| +48% | +$3.49K |
|
2066
PUT
Anterix
ATEX
$1.83B
| $1.1M | ﹤0.01% |
242
+191
| +375% | +$9.76K |
|
2067
PUT
FMC
FMC
$1.42B
| $1.09M | ﹤0.01% |
110
+24
| +28% | +$2.21K |
|
2068
Western Digital
WDC
$179B
| $1.09M | ﹤0.01% |
32,760
-16,135
| -33% | -$523K |
|
2069
PUT
Allison Transmission
ALSN
$10.1B
| $1.09M | ﹤0.01% |
297
-209
| -41% | -$7.49K |
|
2070
PUT
CareDx
CDNA
$1.92B
| $1.09M | ﹤0.01% |
308
+218
| +242% | +$6.2K |
|
2071
PUT
Crown Holdings
CCK
$12.8B
| $1.09M | ﹤0.01% |
167
-424
| -72% | -$26.7K |
|
|
CLDR
2072
DELISTED
Cloudera, Inc.
CLDR
| $1.09M | ﹤0.01% |
85,524
+75,724
| +773% | +$728K |
|
2073
PUT
Interactive Brokers
IBKR
$40.9B
| $1.09M | ﹤0.01% |
1,040
+84
| +9% | +$878 |
|
|
CDK
2074
CALL
DELISTED
CDK Global, Inc.
CDK
| $1.08M | ﹤0.01% |
262
-389
| -60% | -$15K |
|
2075
PUT
CRH
CRH
$66.7B
| $1.08M | ﹤0.01% |
316
+51
| +19% | +$1.57K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.