7-26 Trin and possibly downvolume are not confirming market strength.
Trin is (Adv*downvolume) divided by ( Dec*upvolume), so this ratio can be thought of as Inverse of trin without downvolume (algebra gives a few different forms...)
Seems intuitive that this ratio would have a positive correlation with SPY, and it usually does, but during beginning of rallies because downvolume plummets. As the rally progresses, the correlation falls, Ad-Dec volume (nyud) also sees the slope starts very high, (top red horizontal line), then bottoms when the correction ends (NOT There Yet this time-Red circle may hint bearish). The Spy correlation near peak also tends to get a bit more negative, at least for the recent cycles.(Red Circle). May be hinting at more upside. Also, the Spy correlation did not go negative, except or a day or so, during this rally.
So, It seems either downvolume or decliners are strong OR advancers and upvolume is weak. The negative slope recently in TRIN:ADVANCERS might be a hint that Advancers remain strong, at least for this stage of this rally.
"It requires, obviously, some luck and some good policy."