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 | |
|---|---|---|---|---|---|---|
1026
PUT
EPAM Systems
EPAM
$4.5B
| $3.81M | 0.01% |
151
-56
| -27% | -$12.3K |
|
1027
CALL
CF Industries
CF
$19.5B
| $3.8M | 0.01% |
1,352
+475
| +54% | +$13.5K |
|
1028
PUT
Alaska Air
ALK
$4.99B
| $3.8M | 0.01% |
1,049
+32
| +3% | +$1.04K |
|
1029
CALL
Aptiv
APTV
$11.9B
| $3.8M | 0.01% |
488
+455
| +1,379% | +$31.3K |
|
1030
CALL
Eversource Energy
ES
$28.1B
| $3.8M | 0.01% |
456
-307
| -40% | -$25.4K |
|
1031
CALL
NovoCure
NVCR
$2.32B
| $3.79M | 0.01% |
640
-295
| -32% | -$19.4K |
|
1032
CALL
Adient
ADNT
$1.58B
| $3.79M | 0.01% |
2,309
-36
| -2% | -$547 |
|
1033
CALL
Canadian Solar
CSIQ
$997M
| $3.78M | 0.01% |
1,962
-304
| -13% | -$5.41K |
|
1034
PUT
Robert Half
RHI
$3.87B
| $3.77M | 0.01% |
714
+679
| +1,940% | +$32.2K |
|
1035
Vanguard S&P 500 ETF
VOO
$967B
| $3.77M | 0.01% |
13,292
+13,192
| +13,192% | +$3.55M |
|
1036
PUT
Wheaton Precious Metals
WPM
$50B
| $3.75M | 0.01% |
851
-241
| -22% | -$9.48K |
|
1037
PUT
Generac Holdings
GNRC
$12.4B
| $3.74M | 0.01% |
307
+112
| +57% | +$11.8K |
|
1038
PUT
Dominion Energy
D
$62.8B
| $3.74M | 0.01% |
461
+37
| +9% | +$2.97K |
|
1039
PUT
JetBlue
JBLU
$1.86B
| $3.73M | 0.01% |
3,422
+1,088
| +47% | +$10.7K |
|
1040
CALL
Baxter International
BAX
$11.2B
| $3.73M | 0.01% |
433
+171
| +65% | +$14.9K |
|
|
LKFT
1041
Lakefront Biotherapeutics American Depositary Shares
LKFT
$1.84B
| $3.73M | 0.01% |
18,883
+4,872
| +35% | +$1.01M |
|
1042
CALL
SAP
SAP
$171B
| $3.72M | 0.01% |
266
+150
| +129% | +$18.5K |
|
1043
CALL
MACOM Technology Solutions
MTSI
$21.6B
| $3.72M | 0.01% |
1,083
+985
| +1,005% | +$28.8K |
|
|
SAFM
1044
PUT
DELISTED
Sanderson Farms Inc
SAFM
| $3.72M | 0.01% |
321
+307
| +2,193% | +$39.5K |
|
1045
CALL
Corning
GLW
$134B
| $3.72M | 0.01% |
1,435
+934
| +186% | +$21.2K |
|
1046
Twilio
TWLO
$28.1B
| $3.71M | 0.01% |
16,895
-2,925
| -15% | -$470K |
|
1047
CALL
CRISPR Therapeutics
CRSP
$4.68B
| $3.7M | 0.01% |
503
+185
| +58% | +$10.8K |
|
1048
PUT
American Electric Power
AEP
$73.4B
| $3.69M | 0.01% |
464
-179
| -28% | -$14.6K |
|
1049
Datadog
DDOG
$87B
| $3.69M | 0.01% |
42,429
+6,863
| +19% | +$418K |
|
|
SAVE
1050
PUT
DELISTED
Spirit Airlines, Inc.
SAVE
| $3.68M | 0.01% |
2,068
+1,089
| +111% | +$15.5K |
|
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.