Mario Gabelli acquired 461 Thousand Denny`s shares worth $4.18 Million. That's 0.04% of their equity portfolio (352nd largest holding). The first Denny`s trade was made in Q2 2005. Since then Mario Gabelli bought shares nineteen more times and sold shares on 33 occasions. The stake costed the investor $2.53 Million, netting the investor a gain of 65% so far.