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 | |
|---|---|---|---|---|---|---|
|
ZEN
651
CALL
DELISTED
ZENDESK INC
ZEN
| $7.46M | 0.01% |
725
+262
| +57% | +$24.5K |
|
652
PUT
STMicroelectronics
STM
$58.7B
| $7.44M | 0.01% |
2,425
+989
| +69% | +$29.1K |
|
653
CALL
WIX.com
WIX
$2.04B
| $7.44M | 0.01% |
292
-164
| -36% | -$45.2K |
|
654
CALL
Waste Management
WM
$94.9B
| $7.43M | 0.01% |
657
-95
| -13% | -$10.5K |
|
655
CALL
CSX Corp
CSX
$92.8B
| $7.42M | 0.01% |
2,865
-651
| -19% | -$16.1K |
|
656
PUT
Elanco Animal Health
ELAN
$12.7B
| $7.39M | 0.01% |
2,646
+2,502
| +1,738% | +$63.4K |
|
657
PUT
O'Reilly Automotive
ORLY
$71.7B
| $7.38M | 0.01% |
2,400
+30
| +1% | +$912 |
|
|
K
658
PUT
DELISTED
Kellanova
K
| $7.37M | 0.01% |
1,215
+357
| +42% | +$22.6K |
|
659
Chevron
CVX
$384B
| $7.32M | 0.01% |
+101,668
| New | +$8.55M |
|
660
CALL
StoneCo
STNE
$2.76B
| $7.32M | 0.01% |
1,384
+562
| +68% | +$26.8K |
|
661
Workhorse Group
WKHS
$30.4M
| $7.28M | 0.01% |
96
+91
| +1,820% | +$5.2M |
|
662
CALL
MSCI
MSCI
$41.5B
| $7.28M | 0.01% |
204
+57
| +39% | +$20.7K |
|
|
663
PUT
CSX Corp
CSX
$92.8B
| $7.28M | 0.01% |
2,811
+621
| +28% | +$15.3K |
|
664
CALL
GE Aerospace
GE
$354B
| $7.27M | 0.01% |
2,342
-1,750
| -43% | -$56.9K |
|
665
PUT
Molina Healthcare
MOH
$11.6B
| $7.27M | 0.01% |
397
-45
| -10% | -$8.19K |
|
666
CALL
Colgate-Palmolive
CL
$73.3B
| $7.26M | 0.01% |
941
-1,015
| -52% | -$77.4K |
|
667
Royal Caribbean
RCL
$76.7B
| $7.23M | 0.01% |
111,739
-75,558
| -40% | -$4.45M |
|
|
LSI
668
PUT
DELISTED
Life Storage, Inc.
LSI
| $7.23M | 0.01% |
1,031
+107
| +12% | +$7.25K |
|
669
CALL
Sarepta Therapeutics
SRPT
$1.67B
| $7.2M | 0.01% |
513
+50
| +11% | +$7.6K |
|
670
CALL
Group 1 Automotive
GPI
$3.9B
| $7.2M | 0.01% |
815
+759
| +1,355% | +$64.6K |
|
671
CALL
APA Corp
APA
$12.8B
| $7.18M | 0.01% |
7,578
+4,582
| +153% | +$62.8K |
|
672
CALL
Eaton
ETN
$158B
| $7.17M | 0.01% |
703
-359
| -34% | -$35.1K |
|
673
CALL
Emerson Electric
EMR
$78.2B
| $7.15M | 0.01% |
1,091
-4
| -0.4% | -$263 |
|
674
PUT
Rocket Companies
RKT
$38B
| $7.13M | 0.01% |
+3,579
| New | +$83.5K |
|
675
CALL
Kroger
KR
$35.3B
| $7.1M | 0.01% |
2,095
-1,139
| -35% | -$39.3K |
|
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.