Another question I have is, why did it stop at exactly 13.00%?
If it's an entire market of people buying and selling, how do they randomly get to a number that is a whole number?
I feel like I've seen this happen several times before and I've never questioned it before.
So my thought is the market makers push it around for fun? 
more likely it's just shitty computational mathematics in the ... some part of the system
also, similar things happen with powers of 10 and prices, this is technically a power of "1" and the number "13" both of which are psychologically charged concepts
also idk if you ever did any trading but
when you decide to execute a trade, are you gonna put in 13.015?
nope, you will opt for the nearest round number
