The Standard & Poor's 500 will still hit 1500 by the end of this year, despite recent market volatility, Goldman Sachs Asset Management Chairman Jim O'Neill told CNBC Wednesday.

Jim O'Neill

"It looks pretty much slam-dunk to me. I don’t think we’ll see it this quarter, but before the year’s over we’re still on for that," the usually bullish O'Neill told Squawk on the Street.