Mario Gabelli acquired 48.7 Thousand Citigroup shares worth $3.48 Million. That's 0.04% of their equity portfolio (375th largest holding). The first Citigroup trade was made in Q2 2011. Since then Mario Gabelli bought shares eighteen more times and sold shares on 36 occasions. The stake costed the investor $2.65 Million, netting the investor a gain of 31% so far.