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Flattening the curve is a public health strategy to slow down the spread of an epidemic, used against the SARS-CoV-2 virus during the early stages of the COVID-19 pandemic. The curve being flattened is the epidemic curve, a visual representation of the number of infected people needing health care over time. During an epidemic, a health care ...
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On March 16, Trump announced "15 Days to Slow the Spread"—a series of guidelines based on CDC recommendations on topics such as physical distancing, self-isolation, and protecting those at high risk. The government also recommended closing schools and avoiding gatherings of more than ten people.
[79] [15] The city continued with its planned parade and gathering of more than 200 000 people on 28 September and over the subsequent three days, the city's 31 hospitals became fully occupied. During the week ending 16 October, over 4500 people died.
In finance, a calendar spread (also called a time spread or horizontal spread) is a spread trade involving the simultaneous purchase of futures or options expiring on a particular date and the sale of the same instrument expiring on another date. These individual purchases, known as the legs of the spread, vary only in expiration date; they are ...
A jelly roll consists of a long call and a short put with one expiry date, and a long put and a short call with a different expiry date, all at the same strike price. [3] [4] In other words, a trader combines a synthetic long position at one expiry date with a synthetic short position at another expiry date.
In finance, options backdating is the practice of altering the date a stock option was granted, to a usually earlier (but sometimes later) date at which the underlying stock price was lower. This is a way of repricing options to make them more valuable when the option " strike price " (the fixed price at which the owner of the option can ...
Net volatility refers to the volatility implied by the price of an option spread trade involving two or more options. Essentially, it is the volatility at which the theoretical value of the spread trade matches the price quoted in the market, or, in other words, the implied volatility of the spread.