Despite recent price volatility, new data shows home values rising in April. The FNC Residential Price Index showed a 0.5 percent increase in April, the first positive uptick since the end of the homebuyer tax credit last year. The results are contrary to what others believe is continuing price deterioration and evidence that, despite downward pressure from high volumes of foreclosure sales, home prices are gaining traction, FNC said. According to the Federal Housing Finance Agency’s latest price index, home values were up 0.8 percent between March and April, though the FHFA report only measures prices on mortgages owned by government agencies. These reports follow a recent CoreLogic report that found values up 0.7 percent in April.