Andreas Halvorsen's position in Arthur J. Gallagher is currently worth $212 Million. That's 0.62% of their equity portfolio (50th largest holding). The first Arthur J. Gallagher trade was made in Q1 2018. Since then Andreas Halvorsen bought shares five more times and sold shares on six occasions. The stake costed the investor $210 Million, netting the investor a gain of 1.0% so far.