1\begin{tabular}{lr}2\toprule3Step & Firms \\4\midrule5fundamentals entities & 5,451 \\6>= 8 quarterly periods & 5,018 \\7+ 1m bars (>= 250 sessions) & 4,568 \\8+ bars after 2012-06 & 4,568 \\9+ not public administration & 4,568 \\10\bottomrule11\end{tabular}12