David Einhorn acquired 2.57 Million Cadence Design Systems shares worth $793 Million. It makes up 36.54% of their stock portfolio and is their biggest holding. David Einhorn acquired their 2.57 Million shares in Q4 2008. So far they never sold any shares in the company. The stake costed the investor $10.2 Million, netting the investor a gain of 7652% so far.