Ken Griffin's position in Spok Holdings is currently worth $2.79 Million. That's 0.00% of their equity portfolio (2086th largest holding). The first Spok Holdings trade was made in Q3 2014. Since then Ken Griffin bought shares 34 more times and sold shares on 33 occasions. The stake costed the investor $2.44 Million, netting the investor a gain of 14% so far.