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.
The major U.S. stock exchanges are open for only 6 1/2 hours a day, five days a week. But plenty of investors seem willing to stare at their computer screens and scream with joy or rage 24/7. For them, there's after-hours trading.