Liu also discussed the Federal Reserve's glide path for raising rates, saying he thinks the central bank may have to hike faster than it wants to.
"If the labor market continues to improve at the pace it's been, we could easily be between 4 percent and 4.5 percent on the unemployment rate within 12 months," he said.
"If you look at inflation, we do think that a lot of the effects of the dollar and oil will roll off beginning of next year, and what the Fed might find themselves in is this bind where suddenly all these measures have gotten far further along than they expected, so they may have to move further along than they expected, and they may have to move far more quickly than we thought."
In a Tuesday note, Goldman Sachs said the Fed will increase rates steadily "for several years," hindering stock market growth and leading to no gains next year.
However, Art Hogan of Wunderlich Securities told CNBC's "Power Lunch" on Tuesday he disagrees with the banking giant's assessment.
Hogan said Goldman is "taking the last time the Fed raised rates ... and copied that model, saying 'OK, the Fed is going to raise rates 25 basis points at every meeting until they get their terminal rate,' and then applying a [price-earnings] multiple on what [Goldman] thinks the economy will do, as opposed to looking at what this Fed has done: being very data dependent."