Chuck Royce acquired 3.09 Million Ribbon Communications shares worth $9.68 Million. That's 0.11% of their equity portfolio (278th largest holding). The investor owns 1.70% of the outstanding Ribbon Communications stock. The first Ribbon Communications trade was made in Q4 2017. Since then Chuck Royce bought shares fifteen more times and sold shares on four occasions. The investor's estimated purchase price is $10 Million, resulting in a loss of 3.2%.