Prices are stored from Yahoo Finance by scheduled scans: the 200 most-traded US listings every few minutes during the New York session and every listing at least hourly; ASX listings every 15 minutes during the Sydney session and in full three times a day. Each price shows its source and the time it was observed. Quotes may be delayed.
Which price counts as current
A price counts as current if it was observed in the latest trading session that has started, or in the session before while one is running. So over a weekend or a market holiday you see the last session's closing prices, labelled with their date, rather than an empty page. ASX prices follow the Sydney trading day; there is no ASX holiday calendar yet, so an ASX holiday looks like a normal day without trades.
When a price looks old
- Thinly traded companies may not have traded for a day or more; the price shown is the last trade.
- Some futures (for example lithium hydroxide) trade rarely, so their last trade can be days old.
- Listings that no longer trade under their symbol stay stale until our catalogue is corrected.
The Data sources page shows what share of listings have a current price.