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 | |
|---|---|---|---|---|---|---|
|
JOYY
976
PUT
JOYY Inc
JOYY
$3.66B
| $4.22M | 0.01% |
523
-92
| -15% | -$7.54K |
|
977
CALL
Toll Brothers
TOL
$13.7B
| $4.21M | 0.01% |
866
-123
| -12% | -$4.97K |
|
978
CALL
Charles River Laboratories
CRL
$11B
| $4.21M | 0.01% |
186
+140
| +304% | +$29.1K |
|
979
PUT
HP
HPQ
$22.4B
| $4.21M | 0.01% |
2,216
+1,134
| +105% | +$20.7K |
|
980
PUT
C.H. Robinson
CHRW
$24.2B
| $4.2M | 0.01% |
411
+59
| +17% | +$5.54K |
|
|
SGEN
981
PUT
DELISTED
Seagen Inc. Common Stock
SGEN
| $4.19M | 0.01% |
+214
| New | +$35.8K |
|
|
CHL
982
CALL
DELISTED
China Mobile Limited
CHL
| $4.19M | 0.01% |
1,302
-1,049
| -45% | -$36.8K |
|
|
K
983
CALL
DELISTED
Kellanova
K
| $4.18M | 0.01% |
690
-388
| -36% | -$24.6K |
|
984
PUT
Allstate
ALL
$65.5B
| $4.17M | 0.01% |
443
+320
| +260% | +$29.9K |
|
985
NIO
NIO
$11.6B
| $4.17M | 0.01% |
196,472
-309,901
| -61% | -$4.77M |
|
986
PUT
Alaska Air
ALK
$4.99B
| $4.16M | 0.01% |
1,137
+88
| +8% | +$3.3K |
|
987
CALL
Fidelity National Information Services
FIS
$20.7B
| $4.15M | 0.01% |
282
-55
| -16% | -$7.95K |
|
988
CALL
Ciena
CIEN
$57.7B
| $4.14M | 0.01% |
1,044
-9
| -0.9% | -$474 |
|
989
CALL
Oneok
OKE
$58.7B
| $4.14M | 0.01% |
1,595
+377
| +31% | +$10.5K |
|
990
ProShares Ultra Gold
UGL
$648M
| $4.14M | 0.01% |
241,460
+235,356
| +3,856% | +$4.22M |
|
991
CALL
Cummins
CMI
$91.8B
| $4.14M | 0.01% |
196
-70
| -26% | -$13.9K |
|
|
AMED
992
CALL
DELISTED
Amedisys
AMED
| $4.14M | 0.01% |
175
| – | – |
|
993
PUT
Li Auto
LI
$12.3B
| $4.14M | 0.01% |
+2,379
| New | +$39.7K |
|
994
CALL
Molson Coors Class B
TAP
$7.51B
| $4.13M | 0.01% |
1,231
+869
| +240% | +$31.4K |
|
|
CLDR
995
CALL
DELISTED
Cloudera, Inc.
CLDR
| $4.13M | 0.01% |
3,791
-3,941
| -51% | -$45.7K |
|
996
3M
MMM
$87.5B
| $4.12M | 0.01% |
30,786
+4,197
| +16% | +$565K |
|
|
KL
997
CALL
DELISTED
Kirkland Lake Gold Ltd Ordinary
KL
| $4.12M | 0.01% |
845
-405
| -32% | -$20.3K |
|
998
CALL
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $4.12M | 0.01% |
824
+193
| +31% | +$7.64K |
|
999
PUT
Emerson Electric
EMR
$81.2B
| $4.09M | 0.01% |
624
+341
| +120% | +$22.5K |
|
1000
PUT
Enterprise Products Partners
EPD
$83.9B
| $4.09M | 0.01% |
2,591
+747
| +41% | +$13.1K |
|
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.