Influence of company search queries on the S&P 100 index development.

a Beta-coefficients, p-values and R2 were calculated by using a simple time-lagged regression model SPYt+1 = β0t + β1t 〈Δn〉(t,Δt)+ β2tVIXt to investigate the correlation of the S&P 100 index development in the next period (SPYt+1) with the current change over all (and sectoral) company search queries 〈Δn〉(t,Δt) and, as a basic control variable, with the volatility index of the S&P 500 (VIXt), respectively. Influence of company search queries on the S&P 100 index development.