Out of simple curiosity, I wonder if there is a way to prioritize the search.
So for example, by priority:

1) NYSE
2) AMEX
3) NasdaqNM
4) NasdaqSM

If there is more than U.S Exchange listed, it will return by priority. For
example, if there is a NYSE and NasdaqNM string present, it will return the
NYSE string (priority 1 versus priority 3).

If there is a NasdaqNM and NasdaqSM string, it will return the NasdaqNM
string (priority 3 versus priority 4).

Thanks again...