How exactly does a stock price gap overnight? I read Bob Baerker's answer.
I'll exemplify with KODK.   The NYSE has


Extended Hours: 4:00 pm to 8:00 p.m. ET




Opening Session: 4:00 a.m. to 9:30 a.m. ET


Pretend that on July 28 2020, KODK  last traded on the NYSE at 7:59 PM for \$9. Pretend that on July 29 2020, KODK first traded on the NYSE at 4:01 AM for \$15. How did KODK jump overnight by +6? Is the reason merely because the first trade on July 29 2020, a buyer accepted the sale price of $15?
Many thanks to user &quot;Bob Baerker&quot; for this chart!
A stock price is the price where two entities are willing to transact. The prices are often affected by new information. If a company has a major announcement to make during the day, trading is often halted, and then the price can be radically different after trading resumes, since investors may have revised their valuations.