How can I make a list that counts repeating text strings?

How can I make a list that counts repeating text strings?

I have created an application that let's me record stock ticker symbols into a Creator database. Sometimes the lists can be around 200 symbols, so I enter them all at once using a mult-line field.

I have a column called Multiple_Tickers with cells that contain anywhere from 1 to 200 stock ticker symbols. So each cell could look something like this:

IBM
GOOG
GM
KO
LVLT
FR
SPY

etc.

I'm looking for a script similar to the one I use in excel that will create a list of each ticker symbol that appears in every cell in the column, tally the number of times it appears in the column and then sort the list by decreasing frequency alongside its count. I would also like to apply a date range to eliminate older records.

It is something I currently do with Excel using the formula

=COUNTIF($C$1:$C$49996,$D2)

Where C column is the master list of all the ticker symbols, D is column which contains a single entry of any ticker symbol that appears in C, and E is where the formula above resides and shows the count next to each ticker symbol appearing in column D

Is there any Deluge function that does anything similar?

Thanks in advance to anyone who can point me in the right direction.

Peter O.