 Shares of Lyft Inc. LYFT, -1.43 were down more than 1 in premarket trading Tuesday after Cowen Co. analyst John Blackledge downgraded the stock to market perform from outperform, writing of potential pressures stemming from insurance costs and the macroeconomic climate. On Lyfts last earnings call, President John Zimmer said that inflationary pressures and rising insurance costs were an industry issue and that they were primarily driven by rising premiums as a result of higher cost of used vehicles, vehicle repair, higher medical costs and increased litigation costs. 