Just wait to see what happens when 60k coins are rapidly dumped as it happened on April, 10th.
Considering the current bid depth and daily volume, dumping 60k coins at once may drop the price to almost 0, but meanwhile you could dump it carefully for couple of days without affecting the price much.
For someone has 60k coins (that's more than $30M now), I doubt he will choose to dump at once and lose half of his wealth.
Guess you're new here Last weekends dip was about 60k dumped and it crashed the price to... where it was 3 days before. No one knows where the hell this is going but in terms of volume on the exchanges and panic buying we're at about $120 on the April rise.
Large scale dumping tends to happen in stages.
For example someone dumps about 4000 BTC like we just saw.
The price will then quickly recover on low volume and everyone runs around congratulating themselves and patting each other on the back because they were strong and for 'holding' their coins instead of selling.
The wealthy guy just made a shit load of money off the back of those who didn't sell.
As soon as the bids fill in it happens again.
This is if one person is dumping. If another whale is watching (and they will be) it will be a race to see who holds out the longest before dumping.
As far as I'm concerned this is how a mass dumping event happens. All it takes is one or two to play the dumping game at the same time then others join in. Before you know it there's a free for all and everyone who's actively trading dumps their coins, exchanges get overloaded and the price bounces around like a ball bouncing down a stairway.