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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$27.8M |
| 3 |
JPMorgan Chase
JPM
|
+$22.4M |
| 4 |
Boeing
BA
|
+$19.4M |
| 5 |
ExxonMobil
XOM
|
+$14.7M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
SPDR Gold Trust
GLD
|
+$95.5M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$79.6M |
| 3 |
Tesla
TSLA
|
+$75.3M |
| 4 |
NVIDIA
NVDA
|
+$51.6M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.95% |
| 2 | Consumer Discretionary | 0.55% |
| 3 | Technology | 0.41% |
| 4 | Healthcare | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
326
CALL
NXP Semiconductors
NXPI
$57.5B
| $20.9M | 0.03% |
1,673
+107
| +7% | +$13.1K |
|
327
PUT
First Trust Natural Gas ETF
FCG
$688M
| $20.9M | 0.03% |
1,114
-686
| -38% | -$5.02K |
|
328
Netflix
NFLX
$326B
| $20.8M | 0.03% |
416,360
-486,950
| -54% | -$24.2M |
|
329
CALL
Thermo Fisher Scientific
TMO
$227B
| $20.8M | 0.03% |
470
+269
| +134% | +$111K |
|
330
PUT
Invesco Aerospace & Defense ETF
PPA
$7.91B
| $20.7M | 0.03% |
2,027
+1,601
| +376% | +$90.5K |
|
331
CALL
AstraZeneca
AZN
$252B
| $20.7M | 0.03% |
1,885
-257
| -12% | -$28.6K |
|
|
NKLA
332
PUT
DELISTED
Nikola Corporation Common Stock
NKLA
| $20.6M | 0.03% |
335
+37
| +12% | +$43.1K |
|
333
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$300M
| $20.6M | 0.03% |
8,177
+2,923
| +56% | +$74.2K |
|
334
CALL
Dollar General
DG
$29.4B
| $20.4M | 0.03% |
974
+169
| +21% | +$33.2K |
|
335
PUT
Ulta Beauty
ULTA
$24.1B
| $20.4M | 0.03% |
910
-121
| -12% | -$26K |
|
336
PUT
Darden Restaurants
DRI
$24.6B
| $20.2M | 0.03% |
2,007
+227
| +13% | +$18.9K |
|
337
PUT
Vanguard Dividend Appreciation ETF
VIG
$113B
| $20.2M | 0.03% |
1,567
+1,025
| +189% | +$129K |
|
338
CALL
Southwest Airlines
LUV
$19.4B
| $19.9M | 0.03% |
5,312
-1,465
| -22% | -$52.1K |
|
339
PUT
Carnival Corporation Ltd
CCL
$32.2B
| $19.9M | 0.03% |
13,119
-835
| -6% | -$12.9K |
|
340
PUT
Skyworks Solutions
SWKS
$11.1B
| $19.7M | 0.03% |
1,357
-1,120
| -45% | -$156K |
|
341
PUT
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$26.5B
| $19.7M | 0.03% |
582
+165
| +40% | +$56.3K |
|
342
PUT
Bilibili
BILI
$6.37B
| $19.3M | 0.03% |
4,633
+927
| +25% | +$41K |
|
343
CALL
Zscaler
ZS
$27.7B
| $19.2M | 0.03% |
1,366
-1,463
| -52% | -$190K |
|
344
PUT
SolarEdge
SEDG
$2.1B
| $19.1M | 0.03% |
803
-255
| -24% | -$49K |
|
345
PUT
RH
RH
$2.8B
| $19.1M | 0.03% |
499
-110
| -18% | -$34.7K |
|
346
CALL
Workhorse Group
WKHS
$33.8M
| $18.9M | 0.03% |
2
+1
| +100% | +$57.2K |
|
347
CALL
iShares Core MSCI Emerging Markets ETF
IEMG
$165B
| $18.9M | 0.03% |
4,504
+14
| +0.3% | +$734 |
|
|
COUP
348
PUT
DELISTED
Coupa Software Incorporated
COUP
| $18.7M | 0.03% |
681
-157
| -19% | -$45.8K |
|
349
PUT
T-Mobile US
TMUS
$195B
| $18.6M | 0.03% |
1,627
+82
| +5% | +$9.09K |
|
|
350
PUT
Dollar General
DG
$29.4B
| $18.6M | 0.03% |
886
+166
| +23% | +$32.6K |
|
Similar funds
Simplex Trading's Q3 2020 Portfolio in Review
As of Q3 2020, Simplex Trading held 9,056 positions worth $73.5B, up 17% from $62.7B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q3 2020 filing shows 1,402 new, 3,135 increased, 3,121 reduced and 1,191 closed positions. Its largest new stake was Goldman Sachs: 60,397 shares worth $12.1M. The largest sale was SPDR Gold Trust, an estimated $95.5M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Consumer Discretionary and Technology.
- Simplex Trading's largest Q3 2020 buy was Goldman Sachs: 60,397 shares worth $12.1M.
- Simplex Trading added most to Amazon in Q3 2020, an estimated $102M increase.
- Simplex Trading's biggest Q3 2020 reduction was SPDR Gold Trust, cutting an estimated $95.5M.
- Simplex Trading fully exited iShares MSCI EAFE ETF in Q3 2020, selling an estimated $40.5M.
- Simplex Trading's ten largest holdings make up 43% of its $73.5B portfolio in Q3 2020.
- Simplex Trading opened 1,402 new positions and closed 1,191 in Q3 2020.
- Simplex Trading's portfolio value rose 17% quarter-over-quarter to $73.5B.
Based on Simplex Trading's 13F filing for Q3 2020, filed 14 Oct 2020.