The money pouring into the stock market, as the Dow Jones Industrial Average and the rally to five-year highs, does not seem to be occurring at the expense of fixed-income investments, bond dealer Bill Gross told CNBC's "Squawk Box" on Wednesday.

Gross, founder of Pimco, which also has stock funds, said he thinks the stock inflows are coming from money market funds, capital gains and delayed dividend payments from last year "but not from the bond market at the moment."