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 | |
|---|---|---|---|---|---|---|
1926
CALL
Upland Software
UPLD
$12M
| $1.33M | ﹤0.01% |
35
+21
| +150% | +$7.57K |
|
1927
PUT
Agilent Technologies
A
$39.1B
| $1.32M | ﹤0.01% |
131
-163
| -55% | -$15.8K |
|
1928
Teradyne
TER
$54.8B
| $1.32M | ﹤0.01% |
+16,603
| New | +$1.41M |
|
1929
CALL
Popular Inc
BPOP
$11B
| $1.31M | ﹤0.01% |
362
+339
| +1,474% | +$12.6K |
|
1930
PUT
B&G Foods
BGS
$285M
| $1.31M | ﹤0.01% |
471
-324
| -41% | -$9.06K |
|
1931
CALL
Realty Income
O
$61.2B
| $1.31M | ﹤0.01% |
222
-351
| -61% | -$20.8K |
|
1932
PUT
Ambarella
AMBA
$2.99B
| $1.3M | ﹤0.01% |
250
+37
| +17% | +$1.79K |
|
1933
PUT
DXC Technology
DXC
$1.63B
| $1.3M | ﹤0.01% |
730
-831
| -53% | -$15.2K |
|
|
PMT
1934
CALL
PennyMac Mortgage Investment
PMT
$849M
| $1.3M | ﹤0.01% |
811
+141
| +21% | +$2.5K |
|
1935
PUT
Douglas Emmett
DEI
$2.06B
| $1.3M | ﹤0.01% |
519
+518
| +51,800% | +$14.6K |
|
1936
PUT
Keurig Dr Pepper
KDP
$40.4B
| $1.3M | ﹤0.01% |
472
+214
| +83% | +$6.27K |
|
1937
CALL
Nordic American Tanker
NAT
$1.37B
| $1.3M | ﹤0.01% |
3,729
+1,380
| +59% | +$5.76K |
|
1938
PUT
Cboe Global Markets
CBOE
$29.8B
| $1.3M | ﹤0.01% |
148
-181
| -55% | -$16.3K |
|
|
PSTH
1939
DELISTED
Pershing Square Tontine Holdings, Ltd.
PSTH
| $1.3M | ﹤0.01% |
+57,221
| New | +$1.29M |
|
1940
PUT
Opko Health
OPK
$921M
| $1.3M | ﹤0.01% |
3,513
+854
| +32% | +$3.6K |
|
|
MDLA
1941
PUT
DELISTED
Medallia, Inc.
MDLA
| $1.3M | ﹤0.01% |
473
+305
| +182% | +$9.25K |
|
1942
Invesco CurrencyShares Japanese Yen Trust
FXY
$423M
| $1.29M | ﹤0.01% |
14,459
+11,334
| +363% | +$1.01M |
|
1943
CALL
AudioCodes
AUDC
$244M
| $1.29M | ﹤0.01% |
411
+116
| +39% | +$3.93K |
|
1944
Domino's
DPZ
$11B
| $1.29M | ﹤0.01% |
3,042
-286
| -9% | -$114K |
|
1945
PUT
Flex
FLEX
$43.4B
| $1.29M | ﹤0.01% |
1,541
-479
| -24% | -$3.91K |
|
1946
Petrobras
PBR
$121B
| $1.29M | ﹤0.01% |
+181,263
| New | +$1.54M |
|
|
CCXI
1947
DELISTED
ChemoCentryx, Inc.
CCXI
| $1.29M | ﹤0.01% |
23,556
+1,559
| +7% | +$83.9K |
|
1948
PUT
Carrier Global
CARR
$57.2B
| $1.29M | ﹤0.01% |
422
+182
| +76% | +$5.15K |
|
|
HPP
1949
PUT
Hudson Pacific Properties
HPP
$834M
| $1.29M | ﹤0.01% |
84
+75
| +833% | +$12.4K |
|
1950
CALL
Invesco Mortgage Capital
IVR
$776M
| $1.29M | ﹤0.01% |
475
+139
| +41% | +$4.29K |
|
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.