Stock index futures extended gains on Tuesday after government data showed housing starts rebounded in May, and producer prices in the month rose less than expected, showing inflationary pressures were contained.

S&P 500 futures rose 4.40 points and were above fair 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 climbed 36 points, while Nasdaq 100 futures rose 7.75 points.

(Reporting by Ellis Mnyandu; Editing by Padraic Cassidy)