US equity-index futures fluctuated s on Tuesday as investors eyed the start of U.S. earnings season and the signing of the phase 1 with China. /ES -0.50 , SPY +0.05. As @ 8:00 am CST. Expect SPY to push up to new high Then will sell off, High 328.30-328.65. Low 326.80-326.50. break 326.50 will go...