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30 September 1985: The NYSE opens at 9:30 for the first time

The New York Stock Exchange moved its opening bell from 10:00 a.m. to 9:30 a.m., giving traders an extra half hour each day. The change aimed to align better with other markets and handle growing volume. It has been the standard opening time ever since. For long-term investors, the extra half hour changed nothing important, which is a useful reminder of what really matters.

The lesson: For long-term investors, trading hours matter far less than what you own and for how long.

30 September 1985: The NYSE opens at 9:30 for the first time