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 |
Alibaba
BABA
|
+$39.9M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$39M |
| 3 |
Mastercard
MA
|
+$31.3M |
| 4 |
Apple
AAPL
|
+$25.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$25.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
JPMorgan Chase
JPM
|
+$52.8M |
| 2 |
TSMC
TSM
|
+$43M |
| 3 |
Amazon
AMZN
|
+$24.7M |
| 4 |
iShares Silver Trust
SLV
|
+$24.2M |
| 5 |
Netflix
NFLX
|
+$21.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.65% |
| 2 | Technology | 0.37% |
| 3 | Healthcare | 0.33% |
| 4 | Industrials | 0.21% |
| 5 | Communication Services | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
401
PUT
AutoZone
AZO
$48.5B
| $16.8M | 0.02% |
142
-59
| -29% | -$68.3K |
|
402
PUT
Qorvo
QRVO
$7.89B
| $16.8M | 0.02% |
1,012
+152
| +18% | +$22.4K |
|
403
CALL
Airbnb
ABNB
$83.1B
| $16.8M | 0.02% |
+1,145
| New | +$169K |
|
404
Boeing
BA
$164B
| $16.8M | 0.02% |
78,256
-103,092
| -57% | -$19.8M |
|
405
PUT
Illumina
ILMN
$28.9B
| $16.7M | 0.02% |
465
-66
| -12% | -$21K |
|
406
PUT
American Tower
AMT
$77.4B
| $16.7M | 0.02% |
744
+139
| +23% | +$32.3K |
|
407
PUT
Eli Lilly
LLY
$1.04T
| $16.5M | 0.02% |
977
-608
| -38% | -$90.8K |
|
408
PUT
Invesco DB US Dollar Index Bullish Fund
UUP
$432M
| $16.3M | 0.02% |
6,737
+3,291
| +96% | +$81.8K |
|
409
CALL
Phillips 66
PSX
$84.8B
| $16.3M | 0.02% |
2,333
+1,046
| +81% | +$61.4K |
|
410
PUT
Paycom
PAYC
$6.5B
| $16.3M | 0.02% |
360
+245
| +213% | +$97.6K |
|
411
PUT
Sarepta Therapeutics
SRPT
$1.67B
| $16.2M | 0.02% |
950
+566
| +147% | +$83.9K |
|
412
PUT
TJX Companies
TJX
$172B
| $16.2M | 0.02% |
2,370
-54
| -2% | -$3.28K |
|
413
PUT
Philip Morris
PM
$303B
| $16.2M | 0.02% |
1,954
+410
| +27% | +$31.9K |
|
414
PUT
Humana
HUM
$47.7B
| $16.2M | 0.02% |
394
+95
| +32% | +$39.5K |
|
|
VMW
415
CALL
DELISTED
VMware, Inc
VMW
| $16.1M | 0.02% |
1,150
+196
| +21% | +$28.1K |
|
416
CALL
US Bancorp Series B Preferred Stock
USB.PRH
$747M
| $16.1M | 0.02% |
3,459
+294
| +9% | +$6.96K |
|
|
STZ.B
417
PUT
DELISTED
CONSTELLATION BRANDS, INC. CLASS B
STZ.B
| $16.1M | 0.02% |
734
-770
| -51% | -$153K |
|
418
CALL
Altria Group
MO
$121B
| $16M | 0.02% |
3,908
-1,991
| -34% | -$79.9K |
|
|
419
PUT
Airbnb
ABNB
$83.1B
| $15.9M | 0.02% |
+1,085
| New | +$160K |
|
|
HES
420
PUT
DELISTED
Hess
HES
| $15.8M | 0.02% |
2,986
+1,105
| +59% | +$50.2K |
|
421
CALL
Microchip Technology
MCHP
$46.2B
| $15.6M | 0.02% |
2,256
+472
| +26% | +$29.4K |
|
422
PUT
TAL Education Group
TAL
$5.73B
| $15.5M | 0.02% |
2,172
-256
| -11% | -$18.5K |
|
|
KFYP
423
CALL
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $15.5M | 0.02% |
2,031
+875
| +76% | +$27.6K |
|
424
PUT
D.R. Horton
DHI
$40.4B
| $15.5M | 0.02% |
2,249
+533
| +31% | +$38.9K |
|
|
RDS.A
425
CALL
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $15.5M | 0.02% |
4,475
+136
| +3% | +$4.25K |
|
Similar funds
Simplex Trading's Q4 2020 Portfolio in Review
As of Q4 2020, Simplex Trading held 9,568 positions worth $77.2B, up 5% from $73.5B the previous quarter. Its ten largest holdings account for 42% of the portfolio.
Simplex Trading's Q4 2020 filing shows 1,711 new, 3,402 increased, 3,106 reduced and 1,157 closed positions. Its largest new stake was Alibaba: 143,630 shares worth $33.4M. The largest sale was JPMorgan Chase, an estimated $52.8M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.65% of assets, up from 0.53% a quarter earlier, followed by Technology and Healthcare.
- Simplex Trading's largest Q4 2020 buy was Alibaba: 143,630 shares worth $33.4M.
- Simplex Trading added most to Invesco QQQ Trust in Q4 2020, an estimated $39M increase.
- Simplex Trading's biggest Q4 2020 reduction was JPMorgan Chase, cutting an estimated $52.8M.
- Simplex Trading fully exited Target in Q4 2020, selling an estimated $14.3M.
- Simplex Trading's ten largest holdings make up 42% of its $77.2B portfolio in Q4 2020.
- Simplex Trading opened 1,711 new positions and closed 1,157 in Q4 2020.
- Simplex Trading's portfolio value rose 5% quarter-over-quarter to $77.2B.
Based on Simplex Trading's 13F filing for Q4 2020, filed 2 Feb 2021.