Carl Icahn, the billionaire activist, recently set aside his months-long campaign against the planned buyout of Dell by Michael Dell. This is the final retreat he made from the struggling personal computer maker.

He opposed the USD25 billion leveraged buyout put forth by Silver Lake and Dell CEO Michael Dell to take the company private. He announced through Twitter that he was no longer interested in seeking 'appraisal rights' for his shares. This process is where investors seek out assistance from the Delaware court in determining the stock valuation. 

He said, "I withdrew my demand for appraisal of my Dell shares. Based on our returens on capital, we believe we have better uses for USD2 billion."

Just last month, Icahn ended is efforts to block the deal. This would smoothen the way for the largest buyout since 2007. Icahn was the company's second largest shareholder at the time and promised he would no longer block the deal. He said he woulld be avoiding a war with the company's founder and its board, which he said 'would be almost impossible to win."