There was an interview of Taleb that someone posted here in some thread a while back where he said he had spent some time in the pits in Chicago and realized that market makers were always putting on little squeezes, and these were crucial to price-setting.
I've never been an MM, so I don't know if he's right or not. I do know that it seems that way in larger time frames in the larger market, and as a result I always try to use ways of gauging where the money is committed, because then what will happen is that if you squeeze a bit in the other direction, it all comes rushing over to your side, because, in the end, fear is a stronger emotion than greed.
A longer way of saying what you said re traders vs institutions, I guess.
So I have my ways of measuring this stuff, and what I see matches what Hulbert says in that article: as soon as there's some movement up, it's met by extreme skepticism. That's a classic formula for a bull market.
I had thought the shorts and bears would finally throw in the towel this EOM/EOQ, but that is simply not happening. So, the trend continues to be up, and will continue to be up until these guys are finally squeezed so hard they beg, plead, even scream for mercy.