But honestly Unnecessary ? Kidding, Right ?
Unnecessary if you want to "Limit" yourself to Investment dollars available to drive your SP up.
snapshot of level of transparency and where the volume and dollars goes here in the OTC:
OTCQX.......321..........$72,455,580
OTCQB.... 3,622......... $57,818,592
OTC Pink Current Info.....2,163..... $134,162,547
OTC Pink Limited Info.......647...... $14,232,959
OTC Pink No Info......... 3,430........$3,118,991
That is each tier, number of securities trading that tier, and appx dollar amount traded in a day.