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 | |
|---|---|---|---|---|---|---|
851
PUT
State Street SPDR Portfolio Europe ETF
SPEU
$707M
| $5.13M | 0.01% |
1,412
+699
| +98% | +$23.3K |
|
852
CALL
PG&E
PCG
$38.6B
| $5.13M | 0.01% |
5,460
-4,715
| -46% | -$43.7K |
|
853
PUT
Ollie's Bargain Outlet
OLLI
$3.94B
| $5.12M | 0.01% |
586
+305
| +109% | +$29.8K |
|
854
American International
AIG
$41.4B
| $5.11M | 0.01% |
+185,547
| New | +$5.53M |
|
|
WRK
855
CALL
DELISTED
WestRock Company
WRK
| $5.11M | 0.01% |
1,470
+1,142
| +348% | +$35.3K |
|
856
PUT
Mattel
MAT
$4.14B
| $5.09M | 0.01% |
4,350
+2,704
| +164% | +$30K |
|
857
Altria Group
MO
$120B
| $5.08M | 0.01% |
131,550
+61,756
| +88% | +$2.57M |
|
858
CALL
Cencora
COR
$59.4B
| $5.08M | 0.01% |
524
+75
| +17% | +$7.45K |
|
859
CALL
RB Global
RBA
$20.3B
| $5.08M | 0.01% |
+857
| New | +$45.2K |
|
860
CALL
The Mosaic Company
MOS
$7.08B
| $5.06M | 0.01% |
2,771
+180
| +7% | +$2.93K |
|
861
PUT
Baxter International
BAX
$11.2B
| $5.05M | 0.01% |
628
+6
| +1% | +$505 |
|
862
CALL
Carlyle Group
CG
$16B
| $5.05M | 0.01% |
2,046
-422
| -17% | -$11.4K |
|
863
PUT
Melco Resorts & Entertainment
MLCO
$2.16B
| $5.04M | 0.01% |
3,026
+2,143
| +243% | +$38K |
|
864
CALL
Truist Financial
TFC
$62.5B
| $5.02M | 0.01% |
1,320
-342
| -21% | -$12.9K |
|
865
PUT
Gen Digital
GEN
$15.1B
| $5M | 0.01% |
2,400
+1,013
| +73% | +$21.9K |
|
866
PUT
Xtrackers MSCI Emerging Markets Hedged Equity ETF
DBEM
$107M
| $5M | 0.01% |
1,449
-689
| -32% | -$16.7K |
|
867
CALL
AvalonBay Communities
AVB
$27.1B
| $4.99M | 0.01% |
334
+257
| +334% | +$39.3K |
|
868
PUT
KKR & Co
KKR
$86.2B
| $4.99M | 0.01% |
1,452
-22
| -1% | -$770 |
|
869
CALL
Estee Lauder
EL
$28.9B
| $4.98M | 0.01% |
228
-81
| -26% | -$16.7K |
|
870
PUT
Martin Marietta Materials
MLM
$32.8B
| $4.97M | 0.01% |
211
-39
| -16% | -$8.44K |
|
871
PUT
Akamai
AKAM
$17.1B
| $4.96M | 0.01% |
449
+290
| +182% | +$32.2K |
|
|
AZPN
872
PUT
DELISTED
ASPEN TECHNOLOGY INC
AZPN
| $4.96M | 0.01% |
392
-83
| -17% | -$1.05M |
|
873
CALL
Alnylam Pharmaceuticals
ALNY
$35.9B
| $4.95M | 0.01% |
340
+163
| +92% | +$23.2K |
|
874
Palo Alto Networks
PANW
$265B
| $4.95M | 0.01% |
121,308
-17,292
| -12% | -$719K |
|
|
MNTA
875
CALL
DELISTED
Momenta Pharmaceuticals, Inc.
MNTA
| $4.95M | 0.01% |
943
+909
| +2,674% | +$37.6K |
|
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.