Here are Friday's biggest calls on Wall Street: Edward Jones downgrades CVS to hold from buy Edward Jones expressed concern over the company losing part of its Blue Shield of California pharmacy benefit manager contract. TD Cowen initiates Dynatrace at outperform TD Cowen said checks were strong and there's reasons to be excited about the tech company. TD Cowen initiates Datadog at outperform TD Cowen said the software company has strong management and ways to differentiate itself from competitors. Bank of America reiterates Peloton as buy Bank of America kept its bullish rating ahead of the fitness stock's earnings report. Morgan Stanley downgrades Aflac to equal weight from overweight Morgan Stanley said the insurance stock's strong earnings and capital have been hampered by challenges within sales and persistence.

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Persons: Edward Jones, TD Cowen, Cowen, Wells, Wells Fargo, Morgan Stanley downgrades Aflac, Morgan Stanley, Riley, there's Organizations: CVS, JPMorgan, Bank of America, Barclays downgrades Keysight Technologies, Barclays, Citi, Materials, Riley Securities, Marvell Technology, MRVL Locations: California