Ken Fisher acquired 141 Thousand Teradyne shares worth $15.8 Million. That's 0.01% of their equity portfolio (351st largest holding). The first Teradyne trade was made in Q1 2013. Since then Ken Fisher bought shares nineteen more times and sold shares on 23 occasions. The stake costed the investor $3.05 Million, netting the investor a gain of 417% so far.