Stocks and bonds have returned more than bitcoin this quarter, according to Bloomberg, raising the possibility that the cryptocurrency boom will lose steam. Global indicators for equities, fixed income and commodities all led the biggest digital assets, which fell about 5 percent from early April to 1:15 p.m. Singapore time on Friday. Gold has also shown a clear advantage over tokens. Noelle Acheson said bitcoin miners, who are rewarded for operating the powerful computers that underpin the digital ledger, may have been another reason for the lacklustre performance of bitcoin in response to tougher conditions. The reward is halved every four years, with the latest halving in April creating a more challenging environment for mining operations.