What does it mean when there are gaps in historical stock aggregates (bars)?
Personal Finance & Money Asked by ladenedge on June 29, 2021
For many less popular stocks, looking at historical data shows "gaps" for which there is no information. For example, here are a couple days in March at 1-minute granularity for such a stock from Yahoo! Finance:
Why are there so few minutes represented on this chart? Is data missing from this chart, or was there really no activity causing a change in price for the missing periods?
One Answer
Illiquid stocks often do not trade for long periods of time during the day. If that's the case here then Yahoo is accurately reporting the trading pattern. If not, then it's bad data.
Correct answer by Bob Baerker on June 29, 2021
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