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 | |
|---|---|---|---|---|---|---|
2126
PUT
Fomento Económico Mexicano
FMX
$43.3B
| $1.11M | ﹤0.01% |
197
+196
| +19,600% | +$11.4K |
|
2127
PUT
CoStar Group
CSGP
$11.3B
| $1.1M | ﹤0.01% |
130
-690
| -84% | -$55K |
|
2128
BJs Wholesale Club
BJ
$11.9B
| $1.1M | ﹤0.01% |
+26,507
| New | +$1.1M |
|
2129
Rockwell Automation
ROK
$51.4B
| $1.1M | ﹤0.01% |
4,987
+4,927
| +8,212% | +$1.1M |
|
2130
PUT
EPAM Systems
EPAM
$4.69B
| $1.1M | ﹤0.01% |
34
-117
| -77% | -$34.9K |
|
2131
MillerKnoll
MLKN
$1.5B
| $1.1M | ﹤0.01% |
+36,411
| New | +$901K |
|
2132
CALL
Canadian National Railway
CNI
$78.3B
| $1.1M | ﹤0.01% |
103
-46
| -31% | -$4.62K |
|
2133
CALL
iShares Convertible Bond ETF
ICVT
$7.23B
| $1.09M | ﹤0.01% |
426
-490
| -53% | -$38.2K |
|
|
NLSN
2134
PUT
DELISTED
Nielsen Holdings plc
NLSN
| $1.09M | ﹤0.01% |
772
+55
| +8% | +$825 |
|
2135
CALL
Diamondback Energy
FANG
$57.6B
| $1.09M | ﹤0.01% |
363
-346
| -49% | -$13.2K |
|
|
AAN.A
2136
CALL
DELISTED
The Aaron's Company Inc Class A
AAN.A
| $1.09M | ﹤0.01% |
193
+116
| +151% | +$657K |
|
2137
CALL
ACI Worldwide
ACIW
$5.72B
| $1.09M | ﹤0.01% |
418
+158
| +61% | +$4.37K |
|
2138
PUT
Fidelity National Financial
FNF
$13.9B
| $1.09M | ﹤0.01% |
363
+182
| +101% | +$5.7K |
|
2139
PUT
Kilroy Realty
KRC
$4.58B
| $1.09M | ﹤0.01% |
210
+107
| +104% | +$6.1K |
|
2140
Agnico Eagle Mines
AEM
$72.6B
| $1.09M | ﹤0.01% |
13,694
-26,871
| -66% | -$2.05M |
|
|
CDK
2141
CALL
DELISTED
CDK Global, Inc.
CDK
| $1.09M | ﹤0.01% |
250
-12
| -5% | -$534 |
|
|
CTB
2142
PUT
DELISTED
Cooper Tire & Rubber Co.
CTB
| $1.09M | ﹤0.01% |
343
+337
| +5,617% | +$11K |
|
2143
PUT
Angi Inc
ANGI
$224M
| $1.09M | ﹤0.01% |
98
+65
| +197% | +$8.96K |
|
2144
CALL
PVH
PVH
$3.71B
| $1.08M | ﹤0.01% |
182
-192
| -51% | -$10.6K |
|
2145
BILL Holdings
BILL
$4.33B
| $1.08M | ﹤0.01% |
10,816
-12,405
| -53% | -$1.13M |
|
2146
CALL
Encore Capital Group
ECPG
$1.93B
| $1.08M | ﹤0.01% |
281
-29
| -9% | -$1.16K |
|
2147
CALL
Yelp
YELP
$1.38B
| $1.08M | ﹤0.01% |
540
+390
| +260% | +$8.88K |
|
2148
CALL
Banco Macro
BMA
$5.7B
| $1.08M | ﹤0.01% |
757
+489
| +182% | +$9.51K |
|
2149
PUT
Purple Innovation
PRPL
$33.2M
| $1.08M | ﹤0.01% |
17
+11
| +183% | +$5.85K |
|
2150
CALL
Builders FirstSource
BLDR
$7.84B
| $1.08M | ﹤0.01% |
331
+176
| +114% | +$4.78K |
|
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.