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 | |
|---|---|---|---|---|---|---|
|
SAGE
1951
CALL
DELISTED
Sage Therapeutics
SAGE
| $1.24M | ﹤0.01% |
298
+79
| +36% | +$2.87K |
|
1952
CALL
Varonis Systems
VRNS
$5.25B
| $1.24M | ﹤0.01% |
420
+66
| +19% | +$1.65K |
|
1953
CALL
OGE Energy
OGE
$10.3B
| $1.24M | ﹤0.01% |
407
+361
| +785% | +$11.2K |
|
1954
PUT
Dorman Products
DORM
$4.01B
| $1.23M | ﹤0.01% |
184
+143
| +349% | +$9.2K |
|
1955
CALL
NOV
NOV
$7.45B
| $1.23M | ﹤0.01% |
1,006
+256
| +34% | +$3.15K |
|
|
CLCT
1956
PUT
DELISTED
Collectors Universe
CLCT
| $1.23M | ﹤0.01% |
359
+357
| +17,850% | +$8.11K |
|
1957
Domino's
DPZ
$11B
| $1.23M | ﹤0.01% |
+3,328
| New | +$1.23M |
|
1958
Marathon Petroleum
MPC
$90.3B
| $1.23M | ﹤0.01% |
32,841
+32,591
| +13,036% | +$1.05M |
|
1959
PUT
Globus Medical
GMED
$10.4B
| $1.23M | ﹤0.01% |
257
-453
| -64% | -$21.9K |
|
1960
CALL
Verisk Analytics
VRSK
$26.4B
| $1.23M | ﹤0.01% |
72
-91
| -56% | -$14.4K |
|
1961
CALL
Innovative Industrial Properties
IIPR
$1.78B
| $1.22M | ﹤0.01% |
139
-241
| -63% | -$19.6K |
|
|
DCP
1962
PUT
DELISTED
DCP Midstream, LP
DCP
| $1.22M | ﹤0.01% |
1,083
-322
| -23% | -$3.05K |
|
1963
Crown Castle
CCI
$32.7B
| $1.22M | ﹤0.01% |
+7,303
| New | +$1.18M |
|
1964
CALL
e.l.f. Beauty
ELF
$4.56B
| $1.22M | ﹤0.01% |
640
+526
| +461% | +$7.53K |
|
|
ATH
1965
CALL
DELISTED
Athene Holding Ltd. Class A Common Shares
ATH
| $1.22M | ﹤0.01% |
391
+177
| +83% | +$4.95K |
|
1966
CALL
BJ's Restaurants
BJRI
$1.41B
| $1.22M | ﹤0.01% |
581
+241
| +71% | +$4.77K |
|
1967
PUT
Tyler Technologies
TYL
$12.2B
| $1.21M | ﹤0.01% |
35
-89
| -72% | -$29.9K |
|
1968
Coherent
COHR
$55.2B
| $1.21M | ﹤0.01% |
+25,601
| New | +$1.01M |
|
1969
iShares TIPS Bond ETF
TIP
$14.5B
| $1.21M | ﹤0.01% |
9,813
-39,584
| -80% | -$4.81M |
|
1970
PUT
DHT Holdings
DHT
$2.97B
| $1.21M | ﹤0.01% |
2,350
+1,288
| +121% | +$8.21K |
|
|
BLUE
1971
DELISTED
bluebird bio
BLUE
| $1.2M | ﹤0.01% |
1,524
-512
| -25% | -$386K |
|
1972
PUT
Dine Brands
DIN
$432M
| $1.2M | ﹤0.01% |
286
-250
| -47% | -$10.1K |
|
1973
BCE
BCE
$19.9B
| $1.2M | ﹤0.01% |
+28,798
| New | +$1.19M |
|
1974
PUT
FirstEnergy
FE
$28.9B
| $1.2M | ﹤0.01% |
310
-24
| -7% | -$992 |
|
|
SPWR
1975
CALL
DELISTED
SunPower Corporation Common Stock
SPWR
| $1.2M | ﹤0.01% |
2,394
+1,333
| +126% | +$6.09K |
|
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.