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 | Miscellaneous | 97.95% |
| 2 | Consumer Discretionary | 0.55% |
| 3 | Technology | 0.41% |
| 4 | Healthcare | 0.23% |
| 5 | Financials | 0.21% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1026
CALL
Teck Resources
TECK
$33.9B
| $3.95M | 0.01% |
2,837
-418
| -13% | -$4.95K |
|
1027
CALL
TE Connectivity
TEL
$60.4B
| $3.95M | 0.01% |
404
-100
| -20% | -$9.2K |
|
1028
CALL
Fortinet
FTNT
$115B
| $3.95M | 0.01% |
1,675
+670
| +67% | +$17.3K |
|
1029
CALL
Ally Financial
ALLY
$13.3B
| $3.94M | 0.01% |
1,571
+700
| +80% | +$15.6K |
|
1030
Marvell Technology
MRVL
$201B
| $3.94M | 0.01% |
+99,158
| New | +$3.65M |
|
1031
PUT
Check Point Software Technologies
CHKP
$14B
| $3.94M | 0.01% |
327
+142
| +77% | +$17.3K |
|
1032
PUT
First Trust Consumer Discretionary AlphaDEX Fund
FXD
$264M
| $3.93M | 0.01% |
500
-35
| -7% | -$1.45K |
|
|
TUP
1033
PUT
DELISTED
Tupperware Brands Corporation
TUP
| $3.92M | 0.01% |
1,945
+582
| +43% | +$8.84K |
|
1034
CALL
Cerence
CRNC
$386M
| $3.91M | 0.01% |
801
+311
| +63% | +$14.9K |
|
1035
PUT
BILL Holdings
BILL
$4.19B
| $3.9M | 0.01% |
389
-193
| -33% | -$17.6K |
|
1036
PUT
WisdomTree US Total Dividend Fund
DTD
$1.67B
| $3.9M | 0.01% |
2,400
-2,260
| -48% | -$106K |
|
1037
CALL
Canadian Solar
CSIQ
$898M
| $3.89M | 0.01% |
1,109
-853
| -43% | -$22.7K |
|
1038
PUT
Boyd Gaming
BYD
$5.67B
| $3.86M | 0.01% |
1,259
+845
| +204% | +$21.2K |
|
1039
PUT
Credit Acceptance
CACC
$6.28B
| $3.86M | 0.01% |
114
-51
| -31% | -$21.5K |
|
1040
PUT
Invesco CurrencyShares Canadian Dollar Trust
FXC
$70.7M
| $3.86M | 0.01% |
522
+170
| +48% | +$12.6K |
|
1041
CALL
Capri Holdings
CPRI
$1.54B
| $3.85M | 0.01% |
2,140
+311
| +17% | +$5.27K |
|
|
SBNY
1042
PUT
DELISTED
Signature Bank
SBNY
| $3.83M | 0.01% |
461
+313
| +211% | +$31.2K |
|
1043
CALL
Plug Power
PLUG
$3.03B
| $3.82M | 0.01% |
2,849
-1,188
| -29% | -$13.1K |
|
|
RDFN
1044
CALL
DELISTED
Redfin
RDFN
| $3.82M | 0.01% |
765
-102
| -12% | -$4.51K |
|
1045
PUT
SAP
SAP
$248B
| $3.82M | 0.01% |
245
+30
| +14% | +$4.76K |
|
1046
CALL
Invesco CurrencyShares Swiss Franc Trust
FXF
$386M
| $3.81M | 0.01% |
384
+341
| +793% | +$33.9K |
|
1047
CALL
Steris
STE
$21.9B
| $3.81M | 0.01% |
216
+156
| +260% | +$24.9K |
|
1048
Bilibili
BILI
$6.37B
| $3.8M | 0.01% |
91,353
+26,946
| +42% | +$1.19M |
|
1049
CALL
ZTO Express
ZTO
$15.9B
| $3.78M | 0.01% |
1,265
+194
| +18% | +$6.62K |
|
1050
CALL
Corteva
CTVA
$58.6B
| $3.78M | 0.01% |
1,313
-451
| -26% | -$12.7K |
|
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 1,402 new, 3,135 increased, 3,121 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 Miscellaneous at 98% of assets, up from 98% a quarter earlier, followed by Consumer Discretionary and Technology.
- 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 1,402 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.