U.S. stock index futures rose further on Tuesday following results from Goldman Sachs .

S&P 500 futures added 2 points and were above value, a formula that evaluates pricing by taking into account interest rates, dividends and time to expiration on the contract. Dow Jones industrial average futures gained 29 points and Nasdaq 100 futures rose 4 points.

Goldman Sachs shares were up 2 percent at $156.93 in premarket trading.

(Reporting by Angela Moon, Editing by Kenneth Barry)