Jim Simons acquired 1.49 Million Atlassian shares worth $297 Million. That's 0.43% of their equity portfolio (30th largest holding). The first Atlassian trade was made in Q2 2016. Since then Jim Simons bought shares fourteen more times and sold shares on 21 occasions. The stake costed the investor $141 Million, netting the investor a gain of 110% so far.