Daily Fluctuations in the Net Worth of the Koch Brothers (in Billions)

WaPo reports:

Charles and David Koch saw their combined net worth sink by an estimated $2.2 billion between Monday and Tuesday, according to Bloomberg Business. They'll be OK, though; they're still worth over $100 billion between the two of them. Put into regular human terms, that's like the average American losing $1,200 -- if you can put it into regular human terms....

There's huge volatility in how much each Koch is worth. Below, their combined earnings or losses on the Billionaires Index each day

.There have been several days in the last six months that they've lost $2 billion, or close to that. And several times that they've made $1 billion or more.