(Bloomberg) -- The search for the "other Bitcoin" is hurting the real thing.
Bitcoin, the largest cryptocurrency, has sputtered out the gate this year and fell as much as 20 percent to about $11,200 Tuesday, the lowest since December. But while regulatory concerns have turned most major crypto markets into a sea of red this month, smaller cryptos have rallied.
Bitcoin's underperformance may be due in part to doubt that the currency can continue delivering the same 1,400 percent returns it did last year, spurring traders to look for smaller digital assets that promise more upside.
That caused Bitcoin's share of the cryptocurrency market to drop to a record low of 32 percent last week from over 90 percent a year ago. And while Ethereum's Ether, Bitcoin Cash and Ripple's XRP vie to dethrone Bitcoin as the biggest crypto by market capitalization, the combined value of assorted smaller digital assets is overtaking the larger cryptocurrencies', except for Bitcoin, for the first time.
Read more: These Digital Coins Soar (or Fall) With Bitcoin
The "Others" category on CoinMarketCap is now 22 percent of the market, just about 10 percentage points from Bitcoin.
After previous generalized sell-offs, Bitcoin has rebounded as investors go back to the original decentralized currency, considered to be the "digital gold" in the space. There is no sign of that this time around.
To contact the reporter on this story: Camila Russo in New York at crusso15@bloomberg.net.
To contact the editors responsible for this story: Michael P. Regan at mregan12@bloomberg.net, Jeremy Herron at jherron8@bloomberg.net, Dave Liedtka, Andrew Dunn
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