Cancer Genetics Inc (CGIX)

[BoilerRoom]

Found this:

Hours
The NYSE and Nasdaq have extended afternoon hours from 4 p.m. to 8 p.m. On half-day market holidays, extended hours run from 1 p.m. to 5 p.m. No extended or after-hours trading takes place on market holidays. Both markets also have pre-opening hours, from 4 a.m. to 9:30 a.m. for the NYSE and from 7 a.m. to 9:30 a.m. for Nasdaq.

https://finance.zacks.com/time-day-stock-market-stop-trading-day-6507.html