GLOSSARY · MARKET STRUCTURE
What is RTH vs ETH (Regular vs Extended Hours)?
RTH is the regular stock-market session; ETH is the overnight futures session around it.
Equity index futures trade nearly 23 hours a day on CME Globex, Sunday 6:00 pm to Friday 5:00 pm ET with a daily one-hour break. Regular Trading Hours (RTH) match the stock market: 9:30 am–4:00 pm ET. Everything else is Extended Trading Hours (ETH).
RTH has the most volume. Many traders mark the overnight (ETH) high and low as key levels for the RTH open.
EXAMPLE
If NQ rallied overnight to 20,150 and the RTH open is 20,100, the overnight high at 20,150 is a common first target or resistance level.
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