$ARIA 1-hour trading volume was about $23 million, 84.4 times the previous average; the price rose 47.42% over the same period.
While we're on the subject, let's talk about volume spikes.
When looking at volume, consider it alongside the candlestick: where the price closes and how long the wicks are usually tell you more than the trading volume alone.
I treat a volume spike as a signal worth paying attention to, not a reason to jump in immediately. I let the price show me the direction.
Extreme readings usually come with more dramatic swings, so it’s even more important to reduce your position rather than add to it.