you do realize that 91 million isn't people buying at .10 and holding them to .70 don't you? it means 91 million shares were traded...like, the same share could have been passed around 3x as many times on the way up as on the way down
let's follow 1 share of stock ok
Person A buys 1 share of CDIV @ .10
Person A sells it to Person B @ .30
Person B sells it to person C @ .70
so far we have 3 trades (that one piece of stock is showing as 3 trades in the volume on the way up)
stock starts to drop
Person C sells to person D @ .40
we now have 1 trade on the way down, showing as volume = 1
Person D continues to hold as the stocks trades sideways, continues to drop, goes up, whatever
So here, that one share war traded 3 times on the way up, and only once on the way down. It would show as 3x the volume on the run. It doesn't mean anything more than that.