Time-varying betas and asymmetric effects of news : empirical analysis of blue chip stocks
- Cambridge, Mass. : National Bureau of Economic Research, 1999
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STOCK EXCHANGES AND CURRENT EVENTS--UNITED STATES--ECONOMETRIC MODELS STOCKS--PRICES--UNITED STATES--FORECASTING BLUE-CHIP STOCKS--PRICES--UNITED STATES--FORECASTING RISK PERCEPTION--UNITED STATES--ECONOMETRIC MODELS