Ken Griffin's position in Alarm.com Holdings is currently worth $16.3 Million. That's 0.02% of their equity portfolio (879th largest holding). The first Alarm.com Holdings trade was made in Q2 2015. Since then Ken Griffin bought shares 42 more times and sold shares on 41 occasions. The stake costed the investor $13.2 Million, netting the investor a gain of 23% so far.