FTSE 100 Trading Hours & Best Sessions (UK100)

UK100 runs continuously from 01:00 UTC Monday through 22:00 UTC Friday, divided into three distinct phases. The Pre-Market session (01:00–08:00 UTC) reflects overnight Asian sentiment and early European positioning — volume is thin, and price action can be erratic. The Regular session (08:00–16:30 UTC) aligns with the London Stock Exchange's official cash market hours, where the underlying index constituents are actively priced. The Extended session (16:30–22:00 UTC) captures the overlap with U.S. equity markets, which opened in 1985 as a formal trading period and remains relevant given Wall Street's influence on global risk appetite. Each phase carries a different liquidity profile, and treating them interchangeably is a common source of unnecessary slippage.

Peak liquidity on UK100 concentrates in two windows. The first runs 08:00–10:30 UTC — the London open — when institutional order flow is heaviest and the bid-ask spread on UK100 CFDs typically reaches its tightest point, often 0.4–1.0 index points with major brokers. The second window opens at 13:30 UTC when U.S. markets come online, creating a transatlantic overlap that historically produces the day's largest intraday range. For traders in New York (ET), that translates to 09:30–11:30 ET and 08:30–10:00 ET respectively. Sydney-based participants (AEST, UTC+10/11) face the least favorable timing: the Regular session opens at 18:00–19:00 AEST, workable but past peak hours. The Pre-Market period before 06:00 UTC sees average volume drop by an estimated 60–70% relative to the Regular session open, according to exchange data aggregators.

Spread behavior on UK100 is not uniform across the trading day. During Pre-Market hours (01:00–08:00 UTC), reduced liquidity pushes spreads wider — some brokers quote 2–4 index points during this window, compared to sub-1-point conditions at the London open. The Regular session delivers the tightest conditions, particularly between 08:00 and 16:00 UTC. After 16:30 UTC, spreads typically widen again as the underlying cash market closes and pricing shifts to futures-derived models; the Extended session can see spreads of 1.5–3 index points depending on U.S. market volatility. Major macro events — such as Bank of England rate decisions, typically released at 12:00 UTC — can cause momentary spread spikes of 5–10 points even within the Regular session. Pulsar Terminal displays real-time spread data directly on your MT5 chart, making it straightforward to identify when UK100 spreads widen beyond the Regular session's typical range before committing to a position.