165k is less than 1% of supply. If the market shits itself because of a fear that 1% of coins might be sold, then the market needs to grow up.
If volume is usually in the 10% range of the total supply then throwing an extra 1% on the market would increase volume by 10% (and thus to 11%). Let's say that of the 10% volume half is buy and half is sell pressure. If you now add 1% total supply to the sell side your sell pressure increases to 6%, which is now 20% higher than the buy pressure. This 20% figure is a bit more significant than 1% and in this case is more visible than the amount of extra coins are as a function of total supply.
tl;dr liquidity matters
Well said. However the salient point is that the market demonstrates its immaturity by being so thinly traded. Keep in mind we are dipping by the mere
threat of the sale of 165k coins.
Edit: Lopumbo beat me to it by 9 seconds.