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After the worst one-day decline in U.S. history -- "Black Monday" in October 1987 -- Americans were unclear on why the stock market had unraveled.
Most investors say it is a good time to buy stocks, yet a majority think a market correction is looming. Few are stressed about the prospect of a correction.
Optimism among U.S. investors rose again in the third quarter after plateauing in the second quarter and is now hitting levels not reached since 2000.