I can't help but say a few words: $IO suddenly saw a volume spike in the past hour, with trading volume 5.4 times the usual level and the price up 3.99%.
I usually don't look at the first candle. I wait for the second candle after the volume spike: if it holds, that's a real signal; if it doesn't, it's a one-off.
How do you usually handle a sudden surge in volume?