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 | Consumer Discretionary | 0.53% |
| 2 | Technology | 0.4% |
| 3 | Healthcare | 0.22% |
| 4 | Financials | 0.21% |
| 5 | Communication Services | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
576
CALL
ASML
ASML
$692B
| $8.75M | 0.01% |
237
-258
| -52% | -$96.4K |
|
577
Eli Lilly
LLY
$1.04T
| $8.74M | 0.01% |
59,071
+11,733
| +25% | +$1.82M |
|
578
PUT
Invesco DB US Dollar Index Bullish Fund
UUP
$432M
| $8.73M | 0.01% |
3,446
+617
| +22% | +$15.7K |
|
579
PUT
ProShares Ultra Bloomberg Natural Gas
BOIL
$422M
| $8.69M | 0.01% |
15
-5
| -25% | -$37.6K |
|
580
PUT
HCA Healthcare
HCA
$82.5B
| $8.68M | 0.01% |
696
-91
| -12% | -$11.3K |
|
581
PUT
Teradyne
TER
$57.8B
| $8.68M | 0.01% |
1,092
+792
| +264% | +$67.2K |
|
582
PUT
Crown Castle
CCI
$33.8B
| $8.66M | 0.01% |
520
-371
| -42% | -$61.2K |
|
583
PUT
Cintas
CTAS
$80.6B
| $8.65M | 0.01% |
1,040
-252
| -20% | -$19.4K |
|
584
CALL
Vanguard FTSE Europe ETF
VGK
$30.2B
| $8.64M | 0.01% |
1,836
-1,253
| -41% | -$66.9K |
|
585
Visa
V
$672B
| $8.63M | 0.01% |
+43,168
| New | +$8.62M |
|
586
CALL
Qorvo
QRVO
$7.89B
| $8.59M | 0.01% |
666
+296
| +80% | +$36.7K |
|
587
PUT
GE Aerospace
GE
$354B
| $8.59M | 0.01% |
2,767
-470
| -15% | -$15.3K |
|
588
PUT
HDFC Bank
HDB
$119B
| $8.58M | 0.01% |
3,436
-50
| -1% | -$1.21K |
|
589
PUT
Planet Fitness
PLNT
$4.28B
| $8.58M | 0.01% |
1,392
+121
| +10% | +$6.96K |
|
590
PUT
Mondelez International
MDLZ
$78.1B
| $8.55M | 0.01% |
1,489
+576
| +63% | +$32.1K |
|
591
PUT
Veeva Systems
VEEV
$30B
| $8.55M | 0.01% |
304
-634
| -68% | -$167K |
|
592
CALL
D.R. Horton
DHI
$40.4B
| $8.54M | 0.01% |
1,129
+780
| +223% | +$53.2K |
|
593
CALL
Hilton Worldwide
HLT
$73.8B
| $8.51M | 0.01% |
997
-500
| -33% | -$41.8K |
|
594
PUT
Prudential Financial
PRU
$41.3B
| $8.51M | 0.01% |
1,339
-42
| -3% | -$2.76K |
|
595
PUT
Agnico Eagle Mines
AEM
$73.5B
| $8.5M | 0.01% |
1,068
+88
| +9% | +$6.73K |
|
596
PUT
iQIYI
IQ
$1.2B
| $8.43M | 0.01% |
3,734
-1,238
| -25% | -$27.1K |
|
597
PUT
PG&E
PCG
$39.9B
| $8.42M | 0.01% |
8,970
-2,729
| -23% | -$25.3K |
|
598
PUT
Chegg
CHGG
$99.9M
| $8.4M | 0.01% |
1,176
-181
| -13% | -$13.3K |
|
|
AYX
599
PUT
DELISTED
Alteryx Inc
AYX
| $8.39M | 0.01% |
739
-77
| -9% | -$10.5K |
|
600
Match Group
MTCH
$8.87B
| $8.38M | 0.01% |
75,743
+27,813
| +58% | +$2.95M |
|
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 1,403 new, 3,135 increased, 3,122 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 Consumer Discretionary at 0.53% of assets, up from 0.47% a quarter earlier, followed by Technology and Healthcare.
- 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 1,403 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.