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 | |
|---|---|---|---|---|---|---|
26
PUT
Alphabet (Google) Class A
GOOGL
$4.24T
| $419M | 0.57% |
57,060
+10,380
| +22% | +$791K |
|
|
27
CALL
Alphabet (Google) Class A
GOOGL
$4.24T
| $407M | 0.55% |
55,460
+20,800
| +60% | +$1.58M |
|
28
PUT
Netflix
NFLX
$286B
| $374M | 0.51% |
74,820
+11,170
| +18% | +$556K |
|
29
PUT
Zoom
ZM
$26.3B
| $342M | 0.46% |
7,270
+2,129
| +41% | +$681K |
|
30
CALL
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $314M | 0.43% |
11,329
+4,004
| +55% | +$1.09M |
|
31
PUT
Adobe
ADBE
$90.3B
| $294M | 0.4% |
5,990
+3,119
| +109% | +$1.45M |
|
32
PUT
Chipotle Mexican Grill
CMG
$42.7B
| $259M | 0.35% |
104,150
+19,450
| +23% | +$469K |
|
33
PUT
VanEck Gold Miners ETF
GDX
$22.7B
| $250M | 0.34% |
43,148
-15,325
| -26% | -$625K |
|
|
XYZ
34
PUT
Block Inc
XYZ
$47.8B
| $249M | 0.34% |
15,318
+2,154
| +16% | +$304K |
|
|
35
CALL
Boeing
BA
$161B
| $243M | 0.33% |
14,717
-1,269
| -8% | -$216K |
|
|
36
PUT
Boeing
BA
$161B
| $240M | 0.33% |
14,545
-3,594
| -20% | -$613K |
|
37
PUT
Advanced Micro Devices
AMD
$888B
| $239M | 0.32% |
29,132
+2,645
| +10% | +$196K |
|
|
38
CALL
Advanced Micro Devices
AMD
$888B
| $235M | 0.32% |
28,664
+11,415
| +66% | +$848K |
|
39
CALL
Walmart Inc
WMT
$878B
| $231M | 0.31% |
49,509
+27,741
| +127% | +$1.23M |
|
|
40
CALL
VanEck Gold Miners ETF
GDX
$22.7B
| $228M | 0.31% |
47,207
+10,642
| +29% | +$434K |
|
|
41
PUT
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $219M | 0.3% |
7,887
-4,171
| -35% | -$1.14M |
|
42
PUT
Shopify
SHOP
$160B
| $214M | 0.29% |
20,950
-12,000
| -36% | -$1.19M |
|
43
PUT
iShares Morningstar Value ETF
ILCV
$1.3B
| $203M | 0.28% |
59,382
-26,902
| -31% | -$1.35M |
|
44
PUT
Salesforce
CRM
$139B
| $193M | 0.26% |
7,690
+1,214
| +19% | +$266K |
|
45
CALL
iShares Silver Trust
SLV
$28.4B
| $191M | 0.26% |
88,162
+45,701
| +108% | +$1.04M |
|
|
46
CALL
Zoom
ZM
$26.3B
| $186M | 0.25% |
3,964
-332
| -8% | -$106K |
|
47
PUT
Visa
V
$677B
| $186M | 0.25% |
9,317
+4,191
| +82% | +$837K |
|
|
48
CALL
Visa
V
$677B
| $176M | 0.24% |
8,787
+2,519
| +40% | +$503K |
|
|
XYZ
49
CALL
Block Inc
XYZ
$47.8B
| $171M | 0.23% |
10,547
+234
| +2% | +$33K |
|
|
50
PUT
Walmart Inc
WMT
$878B
| $170M | 0.23% |
36,369
+24,306
| +201% | +$1.08M |
|
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.