Why Sigma Labs Inc (SGLB) stock turnaround in the after-hours on Thursday?

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Why Sigma Labs Inc (SGLB) stock started Thursday, April 22, 2021, with negativity and lost 7.76% in the normal trading session and closed at $3.21 per share. but in the after-hours, it gained 14.02% and closed at $3.66 per share. SGLB shares have risen by 43.95% over the last 12 months, and they have moved […]