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 | |
|---|---|---|---|---|---|---|
|
SC
1876
PUT
DELISTED
SANTANDER CONSUMER USA HOLDINGS INC
SC
| $1.32M | ﹤0.01% |
719
+478
| +198% | +$7.74K |
|
1877
CALL
Acuity Brands
AYI
$9.88B
| $1.32M | ﹤0.01% |
138
+128
| +1,280% | +$11.3K |
|
1878
OneMain Financial
OMF
$6.9B
| $1.32M | ﹤0.01% |
53,827
+48,514
| +913% | +$1.1M |
|
|
CEO
1879
PUT
DELISTED
CNOOC Limited
CEO
| $1.32M | ﹤0.01% |
117
-82
| -41% | -$9.26K |
|
1880
CALL
Canadian National Railway
CNI
$78.3B
| $1.32M | ﹤0.01% |
149
-1
| -0.7% | -$83 |
|
1881
PUT
KB Home
KBH
$3.48B
| $1.32M | ﹤0.01% |
429
+42
| +11% | +$1.16K |
|
1882
PUT
Masco
MAS
$16B
| $1.31M | ﹤0.01% |
262
+94
| +56% | +$4.08K |
|
1883
PUT
O-I Glass
OI
$1.39B
| $1.31M | ﹤0.01% |
1,465
+547
| +60% | +$4.23K |
|
1884
PUT
Cimpress
CMPR
$2.37B
| $1.31M | ﹤0.01% |
172
-177
| -51% | -$12.6K |
|
|
ESPR
1885
CALL
DELISTED
Esperion Therapeutics
ESPR
| $1.31M | ﹤0.01% |
256
+109
| +74% | +$4.56K |
|
1886
CALL
Baker Hughes
BKR
$56.8B
| $1.31M | ﹤0.01% |
851
+491
| +136% | +$7.18K |
|
1887
CALL
Green Dot
GDOT
$753M
| $1.3M | ﹤0.01% |
266
+238
| +850% | +$8.05K |
|
1888
CALL
Virtu Financial
VIRT
$5.2B
| $1.3M | ﹤0.01% |
553
+135
| +32% | +$3.15K |
|
|
DNKN
1889
CALL
DELISTED
Dunkin' Brands Group, Inc.
DNKN
| $1.3M | ﹤0.01% |
200
-111
| -36% | -$6.91K |
|
1890
PUT
LGI Homes
LGIH
$1.4B
| $1.3M | ﹤0.01% |
148
-13
| -8% | -$911 |
|
1891
WisdomTree India Earnings Fund ETF
EPI
$2.02B
| $1.3M | ﹤0.01% |
64,858
-2,820
| -4% | -$51.4K |
|
|
TMX
1892
CALL
DELISTED
Terminix Global Holdings, Inc.
TMX
| $1.3M | ﹤0.01% |
364
+273
| +300% | +$8.42K |
|
|
MIME
1893
CALL
DELISTED
Mimecast Limited
MIME
| $1.3M | ﹤0.01% |
312
-53
| -15% | -$2.08K |
|
|
APLS
1894
CALL
DELISTED
Apellis Pharmaceuticals
APLS
| $1.29M | ﹤0.01% |
396
+319
| +414% | +$10.2K |
|
1895
iShares MSCI Australia ETF
EWA
$1.34B
| $1.29M | ﹤0.01% |
67,133
+67,033
| +67,033% | +$1.18M |
|
1896
PUT
Transocean
RIG
$5.92B
| $1.29M | ﹤0.01% |
7,068
+4,513
| +177% | +$7.01K |
|
1897
PUT
Markel Group
MKL
$25B
| $1.29M | ﹤0.01% |
14
-5
| -26% | -$4.54K |
|
1898
PUT
Sturm, Ruger & Co
RGR
$610M
| $1.29M | ﹤0.01% |
170
+87
| +105% | +$5.29K |
|
1899
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $1.29M | ﹤0.01% |
12,188
-41,334
| -77% | -$4.3M |
|
1900
PUT
Nasdaq
NDAQ
$51.5B
| $1.29M | ﹤0.01% |
324
-183
| -36% | -$6.81K |
|
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.