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 | |
|---|---|---|---|---|---|---|
|
CERN
1826
DELISTED
Cerner Corp
CERN
| $1.47M | ﹤0.01% |
+20,328
| New | +$1.45M |
|
1827
CALL
iShares Gold Trust
IAU
$63B
| $1.47M | ﹤0.01% |
408
+220
| +117% | +$8.03K |
|
|
CODX
1828
CALL
Co-Diagnostics
CODX
$7.74M
| $1.47M | ﹤0.01% |
36
+4
| +13% | +$2.06K |
|
1829
PUT
Old Dominion Freight Line
ODFL
$48.5B
| $1.46M | ﹤0.01% |
158
+28
| +22% | +$2.63K |
|
|
UNIT
1830
Uniti Group
UNIT
$2.63B
| $1.46M | ﹤0.01% |
138,988
-4,921
| -3% | -$47.7K |
|
1831
CALL
JetBlue
JBLU
$1.96B
| $1.46M | ﹤0.01% |
1,292
-333
| -20% | -$3.74K |
|
|
DAY
1832
PUT
DELISTED
Dayforce
DAY
| $1.46M | ﹤0.01% |
177
-153
| -46% | -$12K |
|
1833
CALL
F5
FFIV
$22.1B
| $1.46M | ﹤0.01% |
119
+39
| +49% | +$5.25K |
|
1834
State Street SPDR S&P Homebuilders ETF
XHB
$1.74B
| $1.46M | ﹤0.01% |
27,073
+24,507
| +955% | +$1.24M |
|
1835
CALL
United Natural Foods
UNFI
$3.01B
| $1.46M | ﹤0.01% |
980
-352
| -26% | -$6.68K |
|
1836
CALL
Dynatrace
DT
$12.1B
| $1.46M | ﹤0.01% |
355
+145
| +69% | +$5.94K |
|
1837
CALL
American Financial Group
AFG
$11.9B
| $1.45M | ﹤0.01% |
217
+153
| +239% | +$9.85K |
|
1838
Canadian Solar
CSIQ
$906M
| $1.45M | ﹤0.01% |
41,386
+37,219
| +893% | +$992K |
|
1839
PUT
Western Midstream Partners
WES
$19.6B
| $1.45M | ﹤0.01% |
1,815
+177
| +11% | +$1.6K |
|
1840
Williams-Sonoma
WSM
$26.7B
| $1.45M | ﹤0.01% |
+32,122
| New | +$1.43M |
|
|
NVO
1841
CALL
Novo Nordisk
NVO
$216B
| $1.45M | ﹤0.01% |
418
+68
| +19% | +$2.27K |
|
|
COOP
1842
CALL
DELISTED
Mr. Cooper
COOP
| $1.45M | ﹤0.01% |
650
+108
| +20% | +$1.86K |
|
|
CEO
1843
PUT
DELISTED
CNOOC Limited
CEO
| $1.45M | ﹤0.01% |
151
+34
| +29% | +$3.74K |
|
|
ADAM
1844
Adamas Trust
ADAM
$777M
| $1.45M | ﹤0.01% |
142,013
+141,594
| +33,793% | +$1.47M |
|
|
ITCI
1845
PUT
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $1.45M | ﹤0.01% |
564
+34
| +6% | +$776 |
|
1846
Tyler Technologies
TYL
$12.2B
| $1.45M | ﹤0.01% |
4,150
+105
| +3% | +$36.3K |
|
|
ABB
1847
CALL
DELISTED
ABB Ltd
ABB
| $1.44M | ﹤0.01% |
567
-106
| -16% | -$2.71K |
|
1848
CALL
KeyCorp
KEY
$24.3B
| $1.44M | ﹤0.01% |
1,209
+226
| +23% | +$2.75K |
|
|
ITCI
1849
CALL
DELISTED
Intra-Cellular Therapies Inc.
ITCI
| $1.44M | ﹤0.01% |
561
-287
| -34% | -$6.55K |
|
1850
Qorvo
QRVO
$7.63B
| $1.44M | ﹤0.01% |
11,148
-6,836
| -38% | -$848K |
|
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.