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q-fin.ST2010★ 637 cited
Cross-correlations between volume change and price change
Boris Podobnik, Davor Horvatic, Alexander M. Petersen +1
In finance, one usually deals not with prices but with growth rates , defined as the difference in logarithm between two consecutive prices. Here we consider not the trading vol…
q-fin.ST2007★ 142 cited
Modeling long-range cross-correlations in two-component ARFIMA and FIARCH processes
Boris Podobnik, Davor Horvatic, Alfonso Lam Ng +2
We investigate how simultaneously recorded long-range power-law correlated multi-variate signals cross-correlate. To this end we introduce a two-component ARFIMA stochastic process…