Have you been paying attention to shares of Telephone & Data Systems (TDS) ? Shares have been on the move with the stock up 4.9% over the past month. The stock hit a new 52-week high of $36.66 in the previous session. Telephone & Data Systems has gained 4.9% since the start of the year compared to the 8.7% move for the Zacks Utilities sector and the 95% return for the Zacks Wireline - National industry.What's Driving the Outperformance?The stock has an impressive record of positive earnings surprises, as it ...