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 | |
|---|---|---|---|---|---|---|
3826
PUT
Charles River Laboratories
CRL
$11.6B
| $249K | ﹤0.01% |
11
-23
| -68% | -$4.77K |
|
3827
3D Systems Corp
DDD
$412M
| $249K | ﹤0.01% |
50,771
+9,673
| +24% | +$57.3K |
|
3828
PUT
Hilltop Holdings
HTH
$2.28B
| $249K | ﹤0.01% |
121
-272
| -69% | -$5.28K |
|
3829
Murphy USA
MUSA
$11.1B
| $249K | ﹤0.01% |
+1,943
| New | +$257K |
|
|
AXU
3830
PUT
DELISTED
Alexco Resource Corp
AXU
| $249K | ﹤0.01% |
944
+673
| +248% | +$1.85K |
|
|
GSS
3831
PUT
DELISTED
Golden Star Resources Ltd.
GSS
| $249K | ﹤0.01% |
579
+258
| +80% | +$1.07K |
|
|
LGF.B
3832
PUT
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
| $248K | ﹤0.01% |
263
-298
| -53% | -$2.38K |
|
|
SJR
3833
CALL
DELISTED
Shaw Communications Inc.
SJR
| $248K | ﹤0.01% |
136
+103
| +312% | +$1.88K |
|
|
SBNY
3834
CALL
DELISTED
Signature Bank
SBNY
| $248K | ﹤0.01% |
30
+16
| +114% | +$1.59K |
|
3835
BioLife Solutions
BLFS
$1.56B
| $247K | ﹤0.01% |
+8,556
| New | +$185K |
|
3836
CALL
Genworth Financial
GNW
$3.85B
| $247K | ﹤0.01% |
738
+113
| +18% | +$301 |
|
3837
Silgan Holdings
SLGN
$5.07B
| $247K | ﹤0.01% |
6,718
+6,274
| +1,413% | +$230K |
|
|
TCS
3838
DELISTED
THE CONTAINER STORE GROUP, INC.
TCS
| $247K | ﹤0.01% |
2,660
+2,547
| +2,254% | +$164K |
|
|
PACW
3839
CALL
DELISTED
PacWest Bancorp
PACW
| $247K | ﹤0.01% |
145
-38
| -21% | -$705 |
|
|
SAFM
3840
CALL
DELISTED
Sanderson Farms Inc
SAFM
| $247K | ﹤0.01% |
21
-168
| -89% | -$19.6K |
|
|
PBCT
3841
CALL
DELISTED
People's United Financial Inc
PBCT
| $247K | ﹤0.01% |
240
-333
| -58% | -$3.62K |
|
3842
Alto Ingredients
ALTO
$345M
| $246K | ﹤0.01% |
+33,687
| New | +$117K |
|
3843
CALL
Entergy
ETR
$52.4B
| $246K | ﹤0.01% |
50
-60
| -55% | -$2.97K |
|
3844
FIVE9
FIVN
$2.08B
| $246K | ﹤0.01% |
+1,897
| New | +$228K |
|
3845
Incyte
INCY
$26B
| $246K | ﹤0.01% |
2,749
+2,426
| +751% | +$234K |
|
3846
NiSource
NI
$21.9B
| $246K | ﹤0.01% |
+11,223
| New | +$260K |
|
3847
CALL
Protolabs
PRLB
$1.78B
| $246K | ﹤0.01% |
19
+12
| +171% | +$1.58K |
|
|
CVSA
3848
PUT
Covista Inc
CVSA
$4.3B
| $245K | ﹤0.01% |
100
+99
| +9,900% | +$3.19K |
|
3849
CALL
Natera
NTRA
$36.1B
| $245K | ﹤0.01% |
34
+20
| +143% | +$1.14K |
|
3850
PUT
Nu Skin
NUS
$255M
| $245K | ﹤0.01% |
49
+34
| +227% | +$1.61K |
|
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.