You probably should look at the chart! $TAMG
Thursday: open - .0288, high - .05, low - .02, close - .02.
Friday : open - .0585, high - .09, low - .045, close - .0615.
The high on Thursday (.05) and the low on Friday (.045) closed the gap.
Really, pretty simple math! There never really was a gap. Market makers are tricky bastards, keep an eye on them.