Bitcoin, the world's biggest and best-known cryptocurrency, is up 31.4% from the year's low of $27,734 on Jan. 4.
Ether, the coin linked to the ethereum blockchain network, rose 8.25 % to $2,467.58 on Sunday, adding $187.99 to its previous close.
Bitcoin has been less volatile in the past week but is down by 32% this month, weighed by growing regulatory pressures on the sector.
It is currently trading at levels last seen in January and at roughly half its peak value.
(Reporting by Anirudh Saligrama in Bengaluru; editing by Jason Neely)