CyrusOne shares were down nearly 4%, or $2.01 a share, at $50.86 on the Nasdaq Stock Exchange. The stock ended the day Friday at $52.87.
The drop came after Credit Suisse analyst Sami Badri downgraded CyrusOne to neutral from buy and reduced his target price for the stock to $52. That followed a separate downgrade on Friday to hold from buy and a price-target cut to $54 by analysts at Jefferies.
CyrusOne last week reported a net loss of $105.8 million for the fourth quarter, compared to net income of $2.8 million in the same period in 2017. The net-loss figure included a $96.7 million unrealized loss on the company's equity investment in Chinese data center firm GDS Holdings Ltd. due to a decrease in GDS's share price during the quarter.
Net loss per share was $1 in the fourth quarter of 2018 compared to net income of 3 cents in the same period in 2017.
The company also lowered its full-year 2019 guidance, indicating per-share earnings of between $3.10 to3.20 for the period compared to estimates of $3.53. The company issued revenue guidance of $960 million to $1 billion vs. consensus estimates of $991.8 million.