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My apologize, but as of my knowledge cutoff in December 2022, there isn't a publicly traded company listed on a US stock exchange with the ticker symbol OSTO. It is possible that OSTO is a ticker symbol for a different market or exchange, or it could be a private or upcoming company that has not yet gone public.
However, should you have any particular questions about the stock market, Wall Street, or investing, I will gladly assist you with those. Or if you provide me with the actual ticker symbol of the company you are researching, I can assist you with that information.
Please let me know if there is anything else I can do to help.