Complex sentence: He helped establish a "stock pool" to control trading in the stock of glassmaker Libby-Owens-Ford, an arrangement to drive up the value of the pool operators'holdings in the stock, using insider information and the public's lack of knowledge.
Split into simpler sentences: He helped establish a "stock pool" to control trading in the stock of glassmaker Libby-Owens-Ford. The arrangement drove up the value of the pool operators'holdings in the stock by using insider information and the public's lack of knowledge.