Coleman's Tiger Global Management went the other way on Apple in the quarter, dissolving a stake in the company.
The firm also got out of Google, J.C. Penney and Disney in the quarter, but added to positions in News Corp and Amazon.com.
Peltz's Trian Fund Management bought 5.8 million shares of DuPont in the second quarter, confirming reports that he had taken a position in the company.
His positions in Mondelez and PepsiCo, two companies he has suggested should merge, also rose slightly.
Icahn's quarterly filing offers no hints of the one position people care about most: Apple. Its absence suggests he built his position entirely since the beginning of July.
But it does reflect more than 152 million shares of Dell, where Icahn has been waging a battle with management over a proposed go-private deal.
Soros added to his stake in J.C. Penney in the quarter, with an extra 2 million shares that potentially makes him the second-largest holder of the stock.
Paulson was another manager shedding gold exposure during the quarter, showing a smaller stake in a popular gold ETF. But he also added to his position in Freeport-McMoRan during the quarter.
Ackman, who recently left Penney's board, kept up his stake in the retailer during the quarter.
He also maintained stakes in old favorites like Burger King and General Growth during the period, while shedding a stake in Mondelez.
Einhorn's Greenlight Capital shed its holdings of both Microsoft and CBS during the quarter, while cutting its GM position.
But the firm added Rite Aid during the quarter and also raised its position in Aetna.
Loeb's Third Point sold all of its Hess and Apple during the quarter, but added new positions in Walt Disney and Elan.
—CNBC's Scott Wapner contributed to this report.
—Reuters contributed to this report.