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 | |
|---|---|---|---|---|---|---|
1876
Keurig Dr Pepper
KDP
$40.4B
| $1.81M | ﹤0.01% |
56,553
+55,901
| +8,574% | +$1.65M |
|
|
SINA
1877
PUT
DELISTED
Sina Corp
SINA
| $1.81M | ﹤0.01% |
427
-218
| -34% | -$9.38K |
|
1878
CALL
Sinclair Inc
SBGI
$974M
| $1.8M | ﹤0.01% |
567
+367
| +184% | +$8.76K |
|
1879
Silicon Motion
SIMO
$9.19B
| $1.8M | ﹤0.01% |
37,474
+35,886
| +2,260% | +$1.47M |
|
1880
PUT
Henry Schein
HSIC
$9.74B
| $1.8M | ﹤0.01% |
269
+76
| +39% | +$4.9K |
|
1881
CALL
Realty Income
O
$61.2B
| $1.8M | ﹤0.01% |
298
+76
| +34% | +$4.49K |
|
1882
PUT
Old Dominion Freight Line
ODFL
$48.5B
| $1.79M | ﹤0.01% |
184
+26
| +16% | +$2.59K |
|
1883
United States Natural Gas Fund
UNG
$470M
| $1.79M | ﹤0.01% |
48,799
+8,004
| +20% | +$345K |
|
1884
CALL
GoPro
GPRO
$116M
| $1.79M | ﹤0.01% |
2,159
+415
| +24% | +$2.99K |
|
1885
CALL
Hecla Mining
HL
$10.2B
| $1.79M | ﹤0.01% |
2,758
+71
| +3% | +$378 |
|
1886
PUT
Wendy's
WEN
$1.33B
| $1.78M | ﹤0.01% |
814
-479
| -37% | -$10.9K |
|
1887
State Street Communication Services Select Sector SPDR ETF
XLC
$21.9B
| $1.78M | ﹤0.01% |
26,425
-6,567
| -20% | -$418K |
|
1888
CALL
FMC
FMC
$1.42B
| $1.78M | ﹤0.01% |
155
-32
| -17% | -$3.56K |
|
1889
CALL
Vulcan Materials
VMC
$36.3B
| $1.78M | ﹤0.01% |
120
+64
| +114% | +$9.13K |
|
1890
Invesco NASDAQ Next Gen 100 ETF
QQQJ
$1.11B
| $1.78M | ﹤0.01% |
+57,534
| New | +$1.63M |
|
|
KC
1891
Kingsoft Cloud Holdings
KC
$2.84B
| $1.77M | ﹤0.01% |
40,688
+341
| +0.8% | +$12.6K |
|
1892
CALL
First Horizon
FHN
$12.1B
| $1.76M | ﹤0.01% |
1,384
+382
| +38% | +$4.47K |
|
1893
CALL
Revvity
RVTY
$12.3B
| $1.76M | ﹤0.01% |
123
-153
| -55% | -$20.4K |
|
|
AAN
1894
PUT
DELISTED
The Aaron's Company Inc
AAN
| $1.76M | ﹤0.01% |
+931
| New | +$17.1K |
|
|
CLCT
1895
CALL
DELISTED
Collectors Universe
CLCT
| $1.76M | ﹤0.01% |
234
+213
| +1,014% | +$14.4K |
|
1896
CALL
British American Tobacco
BTI
$132B
| $1.76M | ﹤0.01% |
470
-51
| -10% | -$1.83K |
|
|
REV
1897
PUT
DELISTED
Revlon, Inc.
REV
| $1.76M | ﹤0.01% |
1,484
+1,480
| +37,000% | +$13.5K |
|
1898
PUT
Coty
COTY
$2.33B
| $1.76M | ﹤0.01% |
2,506
+1,423
| +131% | +$7.33K |
|
1899
CALL
Innovative Industrial Properties
IIPR
$1.78B
| $1.76M | ﹤0.01% |
96
-66
| -41% | -$9.88K |
|
1900
Southern Copper
SCCO
$141B
| $1.76M | ﹤0.01% |
29,125
+22,760
| +358% | +$1.17M |
|
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.