RTH (Regular Trading Hours)
RTH refers to the Regular Trading Hours session for US equity index futures: 9:30 AM to 4:00 PM ET. It is the primary session where volume, volatility, and price discovery are at their highest.
RTH (Regular Trading Hours) is the core US equity trading session, running from 9:30 AM to 4:00 PM Eastern Time, Monday through Friday. For futures traders, RTH is where the majority of daily volume and meaningful price action occurs.
RTH session times
| Session | Time (ET) | Time (CT) |
|---|---|---|
| RTH open | 9:30 AM | 8:30 AM |
| RTH close | 4:00 PM | 3:00 PM |
The CME futures cash close is at 4:00 PM ET, but most brokers settle intraday margin at 4:00–4:15 PM ET.
Why RTH matters more than ETH
During RTH, institutional participants: mutual funds, hedge funds, market makers: are fully active. Volume is 5–10× higher than during the overnight session. This means:
- Tighter spreads: bid-ask spreads on ES and NQ are consistently 1 tick during RTH
- Cleaner setups: price levels that were tested overnight often resolve directionally once RTH opens
- More reliable fills: larger orders absorb without significant slippage
RTH structure
The RTH session has distinct phases that experienced traders learn to recognize:
- 9:30–10:30 AM: Opening range and initial trend development (highest volatility)
- 10:30 AM–12:00 PM: Mid-morning continuation or reversal
- 12:00–2:00 PM: Lunch chop (lower volume, erratic movement)
- 2:00–3:00 PM: Afternoon trend, often driven by options flow
- 3:00–4:00 PM: Power hour, closing auction positioning
RTH vs ETH for strategy selection
Many strategies only work reliably during RTH. Breakouts, trend-following, and order flow setups tend to have higher edge during RTH because volume confirms moves. Overnight sessions can produce misleading breakouts that reverse sharply at the RTH open.