Is the stock poised for a turnaround? Realty Income (O 0.70%) shares have struggled over the past year -- they're down over 10%. However, the real estate investment trust (REIT) pays an attractive monthly dividend and just turned in solid first-quarter results. Let's take a look at its most recent quarterly report, the safety of its dividend, and whether now is the time to buy the stock. Solid Q1 results Realty Income saw its first-quarter revenue surge 33% to $1.26 billion, helped by its acquisition of Spi ...