Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2000-11-08
Physics
Condensed Matter
Statistical Mechanics
4 pages 2-column format revtex, 4 figures
Scientific paper
Firms having similar business activities are correlated. We analyze two different cross-correlation matrices C constructed from (i) 30-min price fluctuations of 1000 US stocks for the 2-year period 1994-95 and (ii) 1-day price fluctuations of 422 US stocks for the 35-year period 1962-96. We find that the eigenvectors of C corresponding to the largest eigenvalues allow us to partition the set of all stocks into distinct subsets. These subsets are similar to conventionally-identified business sectors, and are stable for extended periods of time. Using a set of coupled stochastic differential equations, we argue how correlations between stocks might arise. Finally, we demonstrate that the sectors we identify are useful for the practical goal of finding an investment which earns a given return without exposure to unnecessary risk.
Gopikrishnan Parameswaran
Plerou Vasiliki
Rosenow Bernd
Stanley Eugene H.
No associations
LandOfFree
Identifying Business Sectors from Stock Price Fluctuations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Identifying Business Sectors from Stock Price Fluctuations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Identifying Business Sectors from Stock Price Fluctuations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-607513