Hewlett-Packard Co’s full-hearted commitment to Unix is increasingly winning it commercial business, and now Standard and Poor’s Corp’s Trading Systems unit is to market its StockMate system on the HP9000 series under Unix. Standard and Poor’s sees a potential 4,500 customers in North America for its quotation and information system in stock exchanges, brokers, banks and other financial institutions, and Hewlett sees the pact as a way of positioning intself as a major supplier of trader workstations for an emerging segment of the financial-services market. The S&P StockMate is built around Standard and Poor’s Ticker III, a real-time, consolidated market data broadcast of all North American securities including shares, bonds, futures, indices and options.