(Bloomberg) -- A plan announced Thursday by Credit Suisse Group AG to exit its prime services business follows a decline in market share for what was previously Wall Street’s top underwriter of certain stock offerings. Most Read from BloombergChina’s Climate Goals Hinge on a $440 Billion Nuclear BuildoutSupply Chain Crisis Risks Taking the Global Economy Down With ItResults on Key Ballot Initiatives, From Policing to the EnvironmentAtlanta’s Crowded Election Pits Former Mayor Versus ‘Anyone But’