The arrival of the 24X National Exchange is part of a broader push toward a wider window of time for stock trading.

The Philadelphia Stock Exchange (PHLX), founded in 1790, is the oldest stock exchange in the United States.,Modern Evolution, ...

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It's a rough day to be a semiconductor stock. The Philadelphia Stock Exchange Semiconductor Index tumbled 3% on Wednesday, ...

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Even in the early days of the US’s first securities exchange, the Philadelphia Stock Exchange, later acquired by Nasdaq, links to the technological underpinnings of what would become the world’s most ...