Pre-market
Definition · Level 0 · Market basics
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The US extended session before the 9:30 ET open, from as early as 4:00 ET depending on venue and broker: thin volume, wide spreads, usually limit orders only.
Example
Earnings at 7:00: the stock is +6% by 8:00 on 40,000 shares, a fragile price.
Rules and market figures change: check the current ones before relying on this.
Where Tradecraft teaches it
Level 0 · Market basics, in the lesson “Market plumbing & the trading day”: Who stands between you and the other side of your trade, how it settles, and when US stocks trade.
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