U.S. central bankers are meeting in Jackson Hole this week to discuss monetary policy, leaving investors "tapping their feet" as they await the Fed's decision, said Brian Battle, director at Performance Trust Capital Advisors. For now, all investors can do is wait for minutes from the Federal Open Market Committee's July meeting to be released. "It's all on hold now, and we're in a low-volume environment because it's the end of the summer," Battle said. "We're pretty sure the Fed minutes are going to be a nonevent, but you're never sure until it's released." Battle said there are "nascent" indications that the economy is slightly improving, and data released Tuesday seemed to confirm that.