Here are the biggest calls on Wall Street on Wednesday: Barclays reiterates Coinbase as underweight Barclays said it remains unclear how the U.S. Securities and Exchange Commission's Grayscale bitcoin exchange-traded fund decision Tuesday will affect Coinbase. "A US appeals court overturned an SEC ruling rejecting Grayscale's spot BTC ETF, sending it back for further review. While this reads through positively for spot BTC ETF approvals, it remains unclear if this will be a net positive for Coinbase's P & L." Citi reiterates FedEx as a top pick Citi said FedEx has "parcel pricing power." "A favorable parcel pricing environment alongside…