It remains a mystery why M3 continues to expand while M1 has actually dropped over the past several years.
Since the Fed hasn't published M3 for over a year, nobody knows (and few care) what it is, considering that there are other, more relevant measures.
The Fed quit publishing it because it wasn't an optimal use of resources, something we should all compliment them for doing. Not often a federal agency voluntarily bothers to consider whether or not they should continue spending money on something and then actually voluntarily stops spending money on something they think they don't need.
Of course, to conspirazoids, the fact that they did that is suspicious in and of itself.
A relative decrease in the rate of increase or an absolute drop in M1 isn't at all surprising considering that people don't need the same volume of non-interest-bearing cash and deposits as they formerly did. Ain't technology wonderful?
As for the real topic of this thread, the fact that volume preceeds price is almost indisputable. Spike-volume lows or furious high volume rallies from lows which follow through are the rule, not the exception.
Which isn't to say that there are any hard and fast rules, just a general tendency.