Mario Gabelli acquired 459 Thousand Denny`s shares worth $3.58 Million. That's 0.04% of their equity portfolio (376th 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 34 occasions. The stake costed the investor $2.52 Million, netting the investor a gain of 42% so far.