WASHINGTON - The U.S. stock market, helped by the record economic expansion, will overcome higher interest rates and rally for at least another year, wealthy investors say in a new survey.

Ninety percent of this elite level of active investors - defined as those with annual incomes of $250,000 or more and $150,000 or more in stocks - also plan to increase their stock holdings in the coming months or hold on to what they already have, according to a poll conducted by Penn, Schoen & Berland Associates for Bloomberg News.

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