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
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
PUT
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46B
| $481M | 0.52% |
1,452,900
+406,600
| +39% | +$132M |
|
27
CALL
Alibaba
BABA
$283B
| $399M | 0.43% |
4,534,900
+456,900
| +11% | +$36M |
|
|
28
PUT
Meta Platforms (Facebook)
META
$1.63T
| $398M | 0.43% |
3,308,500
-243,600
| -7% | -$28.6M |
|
|
29
PUT
SPDR Gold Trust
GLD
$132B
| $365M | 0.4% |
2,152,400
-1,804,900
| -46% | -$291M |
|
30
CALL
VanEck Gold Miners ETF
GDX
$22.7B
| $362M | 0.39% |
7,148,700
-557,000
| -7% | -$14.9M |
|
|
31
CALL
JPMorgan Chase
JPM
$918B
| $312M | 0.34% |
2,339,600
+707,300
| +43% | +$89.6M |
|
32
PUT
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $312M | 0.34% |
4,856,700
-1,331,700
| -22% | -$132M |
|
33
CALL
Advanced Micro Devices
AMD
$888B
| $308M | 0.34% |
4,755,900
+858,100
| +22% | +$56.6M |
|
34
PUT
iShares Morningstar Value ETF
ILCV
$1.3B
| $286M | 0.31% |
4,050,000
-462,200
| -10% | -$28.9M |
|
35
CALL
Boeing
BA
$161B
| $277M | 0.3% |
1,454,000
+490,000
| +51% | +$80.1M |
|
|
36
PUT
Advanced Micro Devices
AMD
$888B
| $266M | 0.29% |
4,463,300
+946,100
| +27% | +$62.4M |
|
|
37
PUT
JPMorgan Chase
JPM
$918B
| $262M | 0.29% |
1,956,000
+30,600
| +2% | +$3.88M |
|
|
38
PUT
VanEck Gold Miners ETF
GDX
$22.7B
| $253M | 0.28% |
4,459,800
-1,343,900
| -23% | -$35.9M |
|
39
CALL
PayPal
PYPL
$49.3B
| $247M | 0.27% |
3,472,300
+291,400
| +9% | +$23.3M |
|
40
PUT
Caterpillar
CAT
$410B
| $245M | 0.27% |
1,022,100
+524,900
| +106% | +$114M |
|
41
CALL
iShares Silver Trust
SLV
$28.4B
| $233M | 0.25% |
10,593,300
+1,484,200
| +16% | +$29.1M |
|
42
PUT
Goldman Sachs
GS
$320B
| $228M | 0.25% |
665,000
+222,800
| +50% | +$77.6M |
|
43
CALL
UnitedHealth
UNH
$396B
| $226M | 0.25% |
433,800
+64,300
| +17% | +$34.1M |
|
44
PUT
Home Depot
HD
$332B
| $223M | 0.24% |
706,000
+122,100
| +21% | +$37.2M |
|
45
PUT
Nike
NKE
$63.7B
| $220M | 0.24% |
1,883,300
+967,900
| +106% | +$97.5M |
|
46
PUT
Broadcom
AVGO
$1.84T
| $213M | 0.23% |
3,816,000
+381,000
| +11% | +$19.1M |
|
|
47
CALL
State Street SPDR NYSE Technology ETF
XNTK
$2.16B
| $210M | 0.23% |
3,200,000
+738,400
| +30% | +$73.2M |
|
|
48
PUT
Alibaba
BABA
$283B
| $208M | 0.23% |
2,356,400
-948,700
| -29% | -$74.8M |
|
49
CALL
Adobe
ADBE
$90.3B
| $206M | 0.22% |
613,100
+88,800
| +17% | +$28.4M |
|
|
50
PUT
UnitedHealth
UNH
$396B
| $204M | 0.22% |
384,400
+108,700
| +39% | +$57.6M |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.