David Einhorn acquired 2.57 Million Cadence Design Systems shares worth $841 Million. It makes up 35.43% 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 8126% so far.