Professional Analysts At Jefferies Upgraded Telefonica S.A (NYSE:TEF) From Underperform To Hold RatingOctafinance – Financ… · 15:07 09 Feb 2018Telefonica S.A (NYSE:TEF) Change of Rating New York-listed Telefonica S.A (NYSE:TEF), was increased by equity analysts at Jefferies. The firm increased its rating on the $52.48 billion ma… Read More