1 Caffeine is a stimulant drug that acts on the brain and nervous system. 2  Like many other drugs, it is possible to become dependent on caffeine. 3  Pregnant women, athletes and children should limit their intake of caffeine.  Energy drinks typically have more caffeine and sugar than soft drinks.
After-Hours Futures. The S&P futures regular trading hours on CME is between the hours of 8:30 AM and 3:15 PM EST. This means that S&P 500 futures contracts are traded regularly one hour prior to the 9:30 AM EST stock market open. Moreover S&P futures are also traded outside regular hours on the CME's electronic trading system known as GLOBEX2 (or just plain GLOBEX).
Pre-market trading in stocks occurs from 7 - 9:30am EST, and after-hours trading on a day with a normal session takes place from 4-8pm EST. Many retail brokers offer trading during these sessions but may limit the types of orders that can be used. Liquidity on ECNs.