Sea Limited (SE) Trading Hours & Best Sessions

SE runs across three distinct windows. Pre-Market opens at 10:00 UTC and closes at 14:30 UTC — that's 6:00–10:30 AM Eastern. Regular session runs 14:30–21:00 UTC (9:30 AM–4:00 PM Eastern), the standard NYSE window. After-Hours extends from 21:00 to 01:00 UTC (4:00–8:00 PM Eastern). Compared to European equity markets, which close around 16:30 CET, SE's regular session overlaps only partially with London hours — roughly 90 minutes in the morning. For traders in Asia-Pacific time zones, the regular session falls between 10:30 PM and 5:00 AM SGT, meaning most active participation happens late at night or requires limit orders set in advance.

The first 30 minutes after the NYSE open — 14:30 to 15:00 UTC — consistently produce the highest volume on SE. Unlike mid-cap tech names that fade after the open, SE often sees a second activity spike around 20:00–21:00 UTC as institutional players square positions before close. For day traders, the 14:30–15:30 UTC window offers the tightest bid-ask spreads and the most reliable momentum moves. Swing traders targeting multi-day setups get cleaner fills entering between 15:30 and 19:00 UTC, when volatility settles and order flow is more directional. Pre-market before 13:00 UTC is thin — spreads on SE can run 3–5x wider than regular session levels, making it unsuitable for anything other than large limit orders with defined slippage tolerance. After-hours post-earnings in 2023 showed SE moving 8–12% on light volume, which sounds attractive but means a 100-share order can move price noticeably against you.

During regular session, SE typically trades with spreads of 0.01–0.03 USD on the bid-ask, comparable to other NYSE-listed ADRs in the 40–80 USD price range. Pre-market spreads frequently widen to 0.10–0.25 USD, a 5–8x expansion that erodes edge on smaller position sizes. After-hours behavior is less predictable — spreads can compress briefly around major news but spike to 0.30+ USD during quiet stretches. Whereas US domestic large-caps like AMZN or MSFT maintain tighter after-hours spreads due to deeper liquidity pools, SE's lower average daily volume (roughly 2–4 million shares in 2024) makes it more sensitive to session transitions. Pulsar Terminal displays real-time spread data directly on your MT5 chart, so you can see immediately when SE spreads widen beyond your acceptable threshold outside the regular session window.