Silver Lake Partners, which Financial News exclusively revealed was examining sale options for agency broker Instinet, has reduced its stake in the Nasdaq stock market, from which it bought Instinet less than one year ago.

The California-based technology fund sold 700,000 shares in the US electronic exchange over Thursday and Friday last week at a price range of $29.50-$30.20, according to a filing with the Securities and Exchange Commission, the US regulator.