There are six categories of standard taps. We have broken down the drill size recommendations into those six categories which appear below.here are six categories of standard taps. We have broken down the drill size recommendations into those six categories which appear below.
A: Stock options give their owners the right to buy or sell stocks or other investments at a prearranged price in the future. But in most cases, options can only be bought or sold during regular trading hours. A vast majority of the options on U.S. stocks trade between 9:30 a.m. ET and 4 p.m ET. Most stocks, though, can be traded before or after those hours.
Trading hours on the principal American stock markets, the New York Stock Exchange -- now called NYSE Euronext -- and the Nasdaq electronic system, are Monday through Friday from 9 a.m. until 4 p.m. Eastern time. Both markets also have premarket operations and extended hours until 8 p.m.