I'm considering trading the e-minis and want to make sure I understand how they work. If I'm trading 1, repeat ONE contract of the E-mini S&P (ES): 1) The price moves in tick increments of .25, and each of those .25 increments represents a value of $12.50. So if I go long at 1142 and sell at 1143, a gain of 1 point = 4 tick increments, I've made $50 minus commission. 2) For the E-mini Nasdaq (NQ): The price moves in tick increments of .50, and each of those .25 increments represents a value of $10.00 even. So if I go long at 1440 and sell at 1441, a gain of 1 point = 2 tick increments, I've made $20 minus commission. 3) ES traders use the S & P 500 index as their main indicator, NQ traders use the Nasdaq composite index as their main indicator. What other indicators are used? 4) Are there ever trading halts on these contracts? If so, how often do they occur? 5) If halts do occur, and say I'm long the ES at 1140 for one contract, and it reopens at 1100, have I just lost $2000? I'd imagine something happened like that with traders who held overnight before 9/11. 6) Do the spreads remain extremely consistent in .25 increments for the ES and .50 for the NQ? How about the depth (levels) of the bids and asks? Are they consistent in their increments or are there sometimes huge drops, i.e. best bid for ES will be 1435, but next bid down is 1433? 7) What are the dangers or benefits of trading these contracts INTRADAY & GOING HOME FLAT as opposed to stocks besides the lower margin requirements? 8) Are there market makers or specialists involved in trading the e-minis? Thank you for your comments!