Citi Group analysts have upgraded Coinbase shares to 'buy' from 'neutral', raising the target price from $260 to $345. This decision is influenced by a shifting political landscape in the U.S., including a potential crypto-friendly administration and a Supreme Court decision overturning the Chevron Defence Doctrine. These factors are seen as positive for the regulatory environment of crypto assets. The analysts also highlighted increasing user figures for Coinbase's network and the potential launch of Ether ETFs as additional growth drivers.