Lets keep this topic separate from the pandemic news and discussion.
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USA - Dow opens this morning down $2,250 (9.71%) - and trading is suspended.
To learn more about the US stock market, Google "limit down" and "trading curb"
With the advent of high-speed programmed trading, the market could fall off a cliff almost instantly, so a trading curb (for equities) allows humans to evaluate and "reset" their parameters before trading resumes. From Investopedia:
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USA - Dow opens this morning down $2,250 (9.71%) - and trading is suspended.
To learn more about the US stock market, Google "limit down" and "trading curb"
With the advent of high-speed programmed trading, the market could fall off a cliff almost instantly, so a trading curb (for equities) allows humans to evaluate and "reset" their parameters before trading resumes. From Investopedia:
The purpose of trading curbs is to allow the market to catch its breath when it is rocked by extreme volatility. Temporary halts to trading give market participants time to think about how they want to respond to large and unexpected movements of market indexes or individual securities when the curbs are lifted. The circuit breakers apply to all equities, options, and futures on U.S. exchanges. The S&P 500 Index serves as the reference index for daily calculations of three break points (Levels 1, 2, and 3) that would cause trading halts.
- Level 1 is a 7% decline from the previous day's close of the S&P 500 Index, which will result in a 15-minute trading halt; however, it the the 7% decline occurs within 35 minutes of market close, no halt will be imposed.
- Level 2 is a 13% decline that will also cause a 15-minute halt; similarly, there would be no stop in trading if the 13% decline occurs within 35 minutes of market close.
- Level 3 is a 20% drop that will result in the closing of the stock market for the remainder of the day.