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 | |
|---|---|---|---|---|---|---|
4251
Viasat
VSAT
$10.1B
| $161K | ﹤0.01% |
4,211
-17,703
| -81% | -$720K |
|
4252
PUT
Werner Enterprises
WERN
$2.21B
| $161K | ﹤0.01% |
37
+36
| +3,600% | +$1.48K |
|
|
SLCA
4253
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $161K | ﹤0.01% |
44,694
-13,111
| -23% | -$33.1K |
|
|
ECOM
4254
CALL
DELISTED
CHANNELADVISOR CORPORATION
ECOM
| $161K | ﹤0.01% |
102
-283
| -74% | -$3.27K |
|
4255
Avis
CAR
$5.26B
| $160K | ﹤0.01% |
7,000
-10,038
| -59% | -$184K |
|
4256
CALL
Element Solutions
ESI
$8.49B
| $160K | ﹤0.01% |
148
+61
| +70% | +$612 |
|
4257
Frontdoor
FTDR
$5.24B
| $160K | ﹤0.01% |
3,630
-4,956
| -58% | -$202K |
|
|
GDEN
4258
CALL
DELISTED
Golden Entertainment
GDEN
| $160K | ﹤0.01% |
180
+170
| +1,700% | +$1.58K |
|
4259
CALL
El Pollo Loco
LOCO
$507M
| $160K | ﹤0.01% |
109
+70
| +179% | +$898 |
|
4260
Manchester United
MANU
$4.09B
| $160K | ﹤0.01% |
10,134
-8,904
| -47% | -$142K |
|
4261
Smith Micro Software
SMSI
$13.8M
| $160K | ﹤0.01% |
899
+39
| +5% | +$7.05K |
|
4262
PUT
FNB Corp
FNB
$6.79B
| $159K | ﹤0.01% |
+213
| New | +$1.6K |
|
4263
PUT
Global Partners
GLP
$1.65B
| $159K | ﹤0.01% |
163
-78
| -32% | -$802 |
|
4264
PUT
Independence Realty Trust
IRT
$3.97B
| $159K | ﹤0.01% |
139
+104
| +297% | +$1.04K |
|
4265
Materion
MTRN
$4B
| $159K | ﹤0.01% |
+2,600
| New | +$131K |
|
4266
PUT
Enviri
NVRI
$630M
| $159K | ﹤0.01% |
118
+115
| +3,833% | +$1.16K |
|
4267
PUT
Vir Biotechnology
VIR
$1.46B
| $159K | ﹤0.01% |
39
+35
| +875% | +$1.18K |
|
4268
Alpha and Omega Semiconductor
AOSL
$844M
| $158K | ﹤0.01% |
14,549
-17,550
| -55% | -$180K |
|
4269
CarGurus
CARG
$3.39B
| $158K | ﹤0.01% |
6,235
+4,201
| +207% | +$97.8K |
|
4270
PUT
Goldgroup Mining Inc.
GORO
$151M
| $158K | ﹤0.01% |
386
+279
| +261% | +$1.08K |
|
|
NGD
4271
CALL
DELISTED
New Gold Inc
NGD
| $158K | ﹤0.01% |
1,174
+262
| +29% | +$263 |
|
4272
PUT
VirnetX Holding Corp
VHC
$53.8M
| $158K | ﹤0.01% |
12
-11
| -48% | -$1.35K |
|
|
PSXP
4273
CALL
DELISTED
PHILLIPS 66 PARTNERS LP
PSXP
| $158K | ﹤0.01% |
44
+1
| +2% | +$42 |
|
4274
PUT
Amneal Pharmaceuticals
AMRX
$6.08B
| $157K | ﹤0.01% |
330
+212
| +180% | +$873 |
|
4275
PUT
American States Water
AWR
$3.43B
| $157K | ﹤0.01% |
20
-19
| -49% | -$1.51K |
|
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.