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 | |
|---|---|---|---|---|---|---|
1976
CALL
Alamos Gold
AGI
$12.4B
| $1.65M | ﹤0.01% |
1,882
-327
| -15% | -$2.9K |
|
|
VIEW
1977
PUT
DELISTED
View, Inc. Class A Common Stock
VIEW
| $1.64M | ﹤0.01% |
+25
| New | +$15.5K |
|
1978
iShares MSCI South Korea ETF
EWY
$21.7B
| $1.64M | ﹤0.01% |
+19,092
| New | +$1.41M |
|
1979
CALL
Travel + Leisure Co
TNL
$4.54B
| $1.64M | ﹤0.01% |
366
+265
| +262% | +$10.4K |
|
1980
CALL
Brunswick
BC
$5.19B
| $1.64M | ﹤0.01% |
215
-213
| -50% | -$15K |
|
1981
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$263M
| $1.64M | ﹤0.01% |
194
-306
| -61% | -$14.3K |
|
1982
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$247M
| $1.63M | ﹤0.01% |
171,172
+100,820
| +143% | +$760K |
|
1983
NextEra Energy
NEE
$187B
| $1.63M | ﹤0.01% |
21,175
-170,441
| -89% | -$12.7M |
|
1984
CALL
CleanSpark
CLSK
$3.73B
| $1.63M | ﹤0.01% |
561
+320
| +133% | +$4.07K |
|
1985
CALL
Commercial Vehicle Group
CVGI
$157M
| $1.63M | ﹤0.01% |
1,881
+1,867
| +13,336% | +$13.5K |
|
1986
PUT
Sinclair Inc
SBGI
$974M
| $1.62M | ﹤0.01% |
510
+6
| +1% | +$143 |
|
1987
CALL
Alexandria Real Estate Equities
ARE
$8.88B
| $1.62M | ﹤0.01% |
91
+74
| +435% | +$12.2K |
|
1988
PUT
Veeco
VECO
$3.15B
| $1.62M | ﹤0.01% |
933
+424
| +83% | +$6.48K |
|
1989
PUT
OneMain Financial
OMF
$6.9B
| $1.62M | ﹤0.01% |
336
-478
| -59% | -$18.9K |
|
1990
CALL
Corcept Therapeutics
CORT
$10.2B
| $1.62M | ﹤0.01% |
618
-202
| -25% | -$4.26K |
|
|
TWOU
1991
CALL
DELISTED
2U Inc
TWOU
| $1.62M | ﹤0.01% |
13
+3
| +30% | +$3.22K |
|
1992
CALL
Generac Holdings
GNRC
$11.9B
| $1.61M | ﹤0.01% |
71
-170
| -71% | -$36.6K |
|
1993
PVH
PVH
$3.71B
| $1.61M | ﹤0.01% |
17,192
-8,038
| -32% | -$612K |
|
|
WRK
1994
PUT
DELISTED
WestRock Company
WRK
| $1.61M | ﹤0.01% |
371
-324
| -47% | -$13.4K |
|
1995
iShares MSCI ACWI ETF
ACWI
$32.6B
| $1.61M | ﹤0.01% |
17,790
-5,277
| -23% | -$451K |
|
|
1996
PUT
Alamos Gold
AGI
$12.4B
| $1.61M | ﹤0.01% |
1,843
+810
| +78% | +$7.19K |
|
1997
PUT
Sprouts Farmers Market
SFM
$7.04B
| $1.61M | ﹤0.01% |
802
-906
| -53% | -$18.6K |
|
1998
Restaurant Brands International
QSR
$25.1B
| $1.61M | ﹤0.01% |
26,366
-27,203
| -51% | -$1.59M |
|
|
BHVN
1999
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $1.61M | ﹤0.01% |
18,776
+2,784
| +17% | +$236K |
|
2000
PUT
Infosys
INFY
$45B
| $1.61M | ﹤0.01% |
948
+65
| +7% | +$995 |
|
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.