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 | |
|---|---|---|---|---|---|---|
|
GRMN
1026
CALL
Garmin
GRMN
$46.3B
| $4.74M | 0.01% |
396
+154
| +64% | +$17.1K |
|
|
CERN
1027
CALL
DELISTED
Cerner Corp
CERN
| $4.73M | 0.01% |
603
-64
| -10% | -$4.74K |
|
|
JMIA
1028
Jumia Technologies
JMIA
$734M
| $4.71M | 0.01% |
116,815
+19,472
| +20% | +$475K |
|
1029
Caterpillar
CAT
$412B
| $4.71M | 0.01% |
25,889
-25,342
| -49% | -$4.3M |
|
1030
PUT
BILL Holdings
BILL
$4.11B
| $4.71M | 0.01% |
345
-44
| -11% | -$5.19K |
|
1031
CALL
Opendoor
OPEN
$3.71B
| $4.69M | 0.01% |
2,131
+1,953
| +1,097% | +$41K |
|
1032
Darden Restaurants
DRI
$22.2B
| $4.68M | 0.01% |
39,319
-20,429
| -34% | -$2.19M |
|
1033
PUT
UWM Holdings
UWMC
$590M
| $4.68M | 0.01% |
+3,564
| New | +$37.3K |
|
|
FOLD
1034
CALL
DELISTED
Amicus Therapeutics
FOLD
| $4.66M | 0.01% |
2,020
+1,038
| +106% | +$21.2K |
|
1035
iShares MSCI Emerging Markets ETF
EEM
$28.6B
| $4.66M | 0.01% |
+90,216
| New | +$4.34M |
|
1036
PUT
KKR & Co
KKR
$86.2B
| $4.66M | 0.01% |
1,151
-301
| -21% | -$11.4K |
|
1037
PUT
Allstate
ALL
$65.5B
| $4.64M | 0.01% |
422
-21
| -5% | -$2.06K |
|
|
TUP
1038
PUT
DELISTED
Tupperware Brands Corporation
TUP
| $4.63M | 0.01% |
1,431
-514
| -26% | -$15.2K |
|
1039
PUT
Incyte
INCY
$23.3B
| $4.63M | 0.01% |
532
+241
| +83% | +$20.9K |
|
1040
PUT
Logitech
LOGI
$14.8B
| $4.63M | 0.01% |
476
-874
| -65% | -$75.5K |
|
1041
PUT
St. Joe Company
JOE
$3.57B
| $4.61M | 0.01% |
1,087
+1,052
| +3,006% | +$33.5K |
|
1042
CALL
CBRE Group
CBRE
$39.7B
| $4.6M | 0.01% |
734
+684
| +1,368% | +$38.7K |
|
1043
PUT
Spruce Power Holding Corp
SPRU
$41.1M
| $4.6M | 0.01% |
242
+89
| +58% | +$9.61K |
|
|
FIRY
1044
CALL
Firy Inc
FIRY
$126M
| $4.6M | 0.01% |
115
+95
| +475% | +$28.2K |
|
1045
PUT
Ollie's Bargain Outlet
OLLI
$3.94B
| $4.59M | 0.01% |
562
-24
| -4% | -$2.1K |
|
1046
CALL
Planet Fitness
PLNT
$4.29B
| $4.59M | 0.01% |
592
-1,110
| -65% | -$77.6K |
|
1047
Global X Lithium & Battery Tech ETF
LIT
$1.52B
| $4.59M | 0.01% |
74,196
+72,208
| +3,632% | +$3.58M |
|
1048
PUT
Wingstop
WING
$3.67B
| $4.59M | 0.01% |
346
+37
| +12% | +$4.83K |
|
|
KL
1049
CALL
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $4.58M | 0.01% |
1,109
+264
| +31% | +$11.7K |
|
1050
CALL
VF Corp
VFC
$6.49B
| $4.55M | 0.01% |
535
+423
| +378% | +$33.8K |
|
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.