Ribbon Communications (RBBN) shares fell 6% in Tuesday trading after Rosenblatt Securities downgraded the stock to neutral from buy and trimmed the price target to $2.20 from $3.50.
Trading volume stood at over 916,000 shares, compared with a daily average of more than 741,000.
Price: $1.88, Change: $-0.12, Percent Change: -6.00%