European Central Bank warns about speculative frenzy surrounding bitcoin
Tech exchange Nasdaq to run out bitcoin futures in coming months

The vice-president of the European Central Bank on Wednesday expressed concern about the relentless rise in value of the virtual currency bitcoin and the potential risk accompanying the trend.
“It’s a very particular asset, it’s a speculative asset by definition looking to the developments in its price. Investors are taking that risk of buying at such high prices,” Vitor Constancio said.
Bitcoin smashed through the US$10,000 barrier this week – compared with less than $1,000 this time last year. The rise has taken the overall market capitalisation of hundreds of so-called cryptocurrencies beyond US$300 billion as demand for digital currencies soars.
Despite his warning, Constancio said he did not think bitcoin’s extreme volatility would spread to other markets.

ECB President Mario Draghi said last October it was too early for the ECB to consider regulating virtual currencies.
