Karakorum Racing, the partnership company whose horses have been a staple of the claiming ranks in New York for 15 years, ceased operation in late August, one of the company’s trainers said on Thursday.Jeff Odintz, who was the partnership’s primary trainer over the past several years, said that all of the Karakorum horses were transferred to trainer Enrique Hernandez at Finger Lakes at the end of August.“It was kind of quick,” Odintz said. “I don’t know exactly whether the horses were sold or what, but all of them went to Hernandez. He’s now the owner.”Hernandez did not immediately return a phone call Thursday.The phone number for Karakorum appeared to be out of service on Thursday. Efforts to reach the company’s founder and president, William DiScala Jr., at his home were unsuccessful.Karakorum was launched in 1994, according to the company’s website. The company sold fractional ownership in racehorses, at a starting price of hundreds of dollars, and most of those horses competed in the claiming ranks at New York tracks.The company aggressively marketed its partnerships in the New York area, and it often used its company name when naming horses it acquired at auction. Karakorum’s website listed 14 horses in its stable, along with two unraced “new offerings.”