Paradoxically, the increased availability of data for financial forecasting may increase the variability of asset prices and reduce well-being
Investors or analysts who make financial forecasts (of interest rates, corporate earnings, share prices, etc.) can now use more and more, increasingly high-frequency, data (from bank cards, internet connections - searches - mobility, energy consumption, etc.). The use of new data, as opposed to the smaller amounts of low-frequency data used previously, will improve the quality of forecasts. But if all investors or analysts use the same data, instead of forming different fundamental expectations, this will lead to similar expectations and expectation errors (“crowding”). With all savers / investors reacting to the same data, the result will be increased variability of financial asset prices.