is there a way to know how many wallets exists with 10k coins and above?
The question is uncertain.
We can not know exactly what has a single wallet, because normally a wallet
can hold up to 100 different addresses (sometimes more), although typically it
only uses a few addresses, and often for only a few transactions.
What we can do is count the addresses, and how much they hold.
Among the more than 90630 addresses that have been used at least once,
the addresses that have now more than 10K Nav are about 247, for a total
of about 56971K NAV, almost all the circulating Nav.
One interesting fact instead concerns the addresses that are less than 10K
and greater than 0, they are 2097, for a total 1110K Nav.
Of the latter, well 847 have not given any sign of activity in 2015, their total
is approximately 375K Nav, and the maximum value among them is the 8697 Nav,
but it is a rare case, are usually fractions of Nav, and the average value is 441 Nav.
Instead addresses that have produced stakes in the last week, were about 118.
The topstaker is still sfdzo3, with about 3312 blocks, but in the last 24
hours he has not produced anything, as we know it is migrating to bittrex.
The calculations are made partly manually just now, so error-prone, and constantly changing.
Bye Bye