Wall Street set to open flat after Christmas

Small gains in oil prices supported futures. U.S. crude was up 0.4 percent at $53.24, while Brent crude steadied at $55 as a deal to limit supply came into effect on Sunday, boosting expectations of higher prices. The Dow Jones industrial average marked its seventh straight week of gains on Friday, feeding on optimism that President-elect Donald Trump's plans for deregulation and infrastructure spending would bolster the economy.