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 | |
|---|---|---|---|---|---|---|
626
CALL
Stryker
SYK
$119B
| $7.81M | 0.01% |
375
+17
| +5% | +$3.3K |
|
627
PUT
Edwards Lifesciences
EW
$48.6B
| $7.78M | 0.01% |
975
+366
| +60% | +$28.6K |
|
628
PUT
Aon
AON
$75.2B
| $7.78M | 0.01% |
377
+64
| +20% | +$12.8K |
|
629
CALL
NetEase
NTES
$77.6B
| $7.73M | 0.01% |
850
+120
| +16% | +$11.3K |
|
630
CALL
Ross Stores
ROST
$76.4B
| $7.73M | 0.01% |
828
+330
| +66% | +$29.6K |
|
631
CALL
iQIYI
IQ
$1.2B
| $7.72M | 0.01% |
3,421
+1,131
| +49% | +$24.8K |
|
632
PUT
Albemarle
ALB
$13.9B
| $7.7M | 0.01% |
863
+350
| +68% | +$31K |
|
633
PUT
General Mills
GIS
$19.7B
| $7.7M | 0.01% |
1,249
-923
| -42% | -$57.7K |
|
634
PUT
Teva Pharmaceuticals
TEVA
$35.1B
| $7.7M | 0.01% |
8,548
-1,902
| -18% | -$20.1K |
|
|
HES
635
PUT
DELISTED
Hess
HES
| $7.7M | 0.01% |
1,881
+400
| +27% | +$19K |
|
636
CALL
BioMarin Pharmaceuticals
BMRN
$11.3B
| $7.67M | 0.01% |
1,008
+480
| +91% | +$48.6K |
|
637
PUT
SLB Ltd
SLB
$71.3B
| $7.67M | 0.01% |
4,928
+703
| +17% | +$13.1K |
|
638
PUT
Cencora
COR
$58.5B
| $7.66M | 0.01% |
790
+381
| +93% | +$37.9K |
|
639
PUT
CME Group
CME
$90.1B
| $7.65M | 0.01% |
457
-83
| -15% | -$14K |
|
640
Caterpillar
CAT
$410B
| $7.64M | 0.01% |
51,231
-17,576
| -26% | -$2.47M |
|
641
CALL
Darden Restaurants
DRI
$22.2B
| $7.63M | 0.01% |
757
-181
| -19% | -$15K |
|
642
PUT
Kraft Heinz
KHC
$30.8B
| $7.6M | 0.01% |
2,539
-137
| -5% | -$4.56K |
|
643
CALL
American International
AIG
$41.5B
| $7.6M | 0.01% |
2,760
-399
| -13% | -$11.9K |
|
644
CALL
Sunrun
RUN
$2.61B
| $7.59M | 0.01% |
985
-177
| -15% | -$8.33K |
|
645
PUT
ACM Research
ACMR
$6.19B
| $7.57M | 0.01% |
3,285
-387
| -11% | -$11K |
|
646
PUT
Ralph Lauren
RL
$23B
| $7.54M | 0.01% |
1,110
+335
| +43% | +$23.9K |
|
|
ZEN
647
PUT
DELISTED
ZENDESK INC
ZEN
| $7.52M | 0.01% |
731
-247
| -25% | -$23.1K |
|
648
CALL
Travelers Companies
TRV
$77.6B
| $7.5M | 0.01% |
693
+493
| +247% | +$56.5K |
|
649
PUT
Equity Residential
EQR
$25.6B
| $7.49M | 0.01% |
1,460
+1,353
| +1,264% | +$74.8K |
|
650
PUT
Virgin Galactic
SPCE
$343M
| $7.48M | 0.01% |
195
+74
| +61% | +$28.1K |
|
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.