Between September08 to June09, a period with significant market events and fluctuations, we surveyed UK online-brokerage customers at three-months intervals for their willingness to take risk, three-months expectations of returns and risks for the market and their own portfolio, and self-reported risk attitude. This unique dataset allowed us to analyze (a) how risk and return expectations, risk attitudes, and risk taking changed over time, (b) whether changes in risk taking were related to changes in expectations and/or risk attitudes, and (c) how changes in risk and return expectations related to recent objective changes in market returns and volatility. Risk taking decreased substantially from September08 to March09, and then increased again by June09. Selfassessed risk attitude on average remained stable over this time period, while return and risk expectations changed. Objective/numeric assessments of return and risk expectations were significantly but not very highly correlated with subjective/affective judgments of the same quantities. Consistent with the risk-as-feelings hypothesis, observed changes in risk taking between periods were associated with changes in subjective expectations of market portfolio risk and returns, but not with changes in numeric predictions of market returns and their volatility, and also not with recent experienced changes in stock market performance. Our findings have implications for investment risk communication and investor education, since we show that changes in risk taking are related to subjective risk and return expectations that are not necessarily accurate.