We highlight a very simple statistical tool for the analysis of financial bubbles, which has already been studied in [1]. We provide extensive empirical tests of this statistical tool and investigate analytically its link with stocks correlation structure.
@article{arxiv.0909.2885,
title = {Financial bubbles analysis with a cross-sectional estimator},
author = {Frederic Abergel and Nicolas Huth and Ioane Muni Toke},
journal= {arXiv preprint arXiv:0909.2885},
year = {2009}
}