Kraken Pro has expanded its USD margin trading options by adding new pairs for $Fartcoin ($FARTCOIN), yearn.finance ($YFI), Jasmycoin ($JASMY), and Pudgy Penguins ($PENGU). This expansion brings the total number of markets available for margin trading on Kraken Pro to over 200. The new pairs offer various leverage options and position limits for both long and short positions, enhancing trading flexibility for users.