Definition. The OHLC data for the US Tech 100 Index: index tracking the performance of the 100 largest non-financial companies listed on the Nasdaq exchange.

Technical. On non-trading periods (weekends, market holidays, and outside market hours for intraday resolutions), OHLC values are forward-filled from the last trading session's close price. Daily resolution has data since January 2009. Intraday resolutions (10m, 1h) have shorter history.