Biotech Values

[DewDiligence]

ISRG – The “same store” sales growth that bridgeofsighs is seeking cannot be derived by subtracting the growth in installations from the growth in overall procedures, as you tried to do. Rather, what bridgeofsighs is seeking (if I understand him correctly) is the growth in procedures conducted by machines that have been installed for more than one year.

Whether this is a pertinent metric for ISRG investors to attempt to track is debatable; however, same store sales growth defined as above is indeed the metric that investors typically emphasize for companies who are expanding the installed base.