After the stock market crash of 1987 a la Black Monday, the NYSE decided to implement circuit breakers of sorts that halt trading on the exchange in order to keep the market from imploding.
Here’s the latest for Q1 2010.
You know. Just in case.

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See Also:
- World Stocks Tank On Detroit Bailout Collapse
- Bear and Bull Duke It Out In Front Of NYSE
- Siegel: 2010 Will Be Great For Stocks, And A Rate-Hike Will Only Cause A Two-Week Market Swoon