Difference between - KamarajuKusumanchi/market_data GitHub Wiki
Both are traded OTC. BRDCF is "Foreign issues, except ADRs". BRDCY is "ADR (American Depository Receipts)".
In general, A fifth letter in an OTC ticker means the issue is something other than an issue of common or capital stock. Different characters represent different types of securities. For a complete list, see http://otce.finra.org/Directories/FifthCharacterIdentifiers .
See also:
- https://www.otcmarkets.com/learn/faqs -> see answer to "Why do some symbols have five letters?"
- https://www.reuters.com/finance/stocks/lookup?search=bridgestone&searchType=any&sortBy=&dateRange=&comSortBy=marketcap