> For the complete documentation index, see [llms.txt](https://docs.asterdex.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.asterdex.com/trading/perpetuals/stock-perpetuals/us-stocks.md).
# US Stocks
### Trading Sessions & Order Price Caps
| Session | New York City local time | Limit Order Price Cap | Market Order Price Cap |
| -------------------------------------- | ------------------------ | ---------------------------------------------------- | ----------------------------------------------------------------------------------------- |
| Pre-market （off hrs）
| 4:00 AM\~9:30 AM EST | > 5% more aggressive than MarkPrice will be rejected | Can fill up to 5% more aggressive than MarkPrice, the rest will be canceled |
| Market open
| 9:30 AM\~4:00 PM EST | the same as crypto perpetual trading pairs | the same as crypto perpetual trading pairs |
| Post-Market（off hrs）
| 4:00 PM\~8:00 PM EST | > 5% more aggressive than MarkPrice will be rejected | Can fill up to 5% more aggressive than MarkPrice, the rest will be canceled |
| Overnight
| 8:00 PM-04:00 AM EST | > 5% more aggressive than MarkPrice will be rejected | Can fill up to 5% more aggressive than MarkPrice, the rest will
be canceled
|
### EWMA-Smoothed Mode is active during:
| Session | New York City local time |
| ------------------------------- | --------------------------------------- |
| Overnight
| 08:00 PM →04:00 AM EST(next day) |
| Weekend
| 08:00 PM EST Friday→04:00 AM EST Monday |
| Public holiday
| 00:00→23:59 EST |
| Half-day Trading
| 13:00 EST after market close |
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