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  2. Options strategy - Wikipedia

    en.wikipedia.org/wiki/Options_strategy

    Option strategies are the simultaneous, and often mixed, buying or selling of one or more options that differ in one or more of the options' variables. Call options, simply known as Calls, give the buyer a right to buy a particular stock at that option's strike price. Opposite to that are Put options, simply known as Puts, which give the buyer ...

  3. Credit spread (options) - Wikipedia

    en.wikipedia.org/wiki/Credit_spread_(options)

    Finance. In finance, a credit spread, or net credit spread is an options strategy that involves a purchase of one option and a sale of another option in the same class and expiration but different strike prices. It is designed to make a profit when the spreads between the two options narrows . Investors receive a net credit for entering the ...

  4. Abraham Lincoln and slavery - Wikipedia

    en.wikipedia.org/wiki/Abraham_Lincoln_and_slavery

    [2] However, the question of what to do about it and how to end it, given that it was so firmly embedded in the nation's constitutional framework and in the economy of much of the country, even though concentrated in only the Southern United States, was complex and politically challenging. In addition, there was the unanswered question, which ...

  5. Bull spread - Wikipedia

    en.wikipedia.org/wiki/Bull_spread

    Bull spread. In options trading, a bull spread is a bullish, vertical spread options strategy that is designed to profit from a moderate rise in the price of the underlying security. Because of put–call parity, a bull spread can be constructed using either put options or call options. If constructed using calls, it is a bull call spread ...

  6. Flattening the curve - Wikipedia

    en.wikipedia.org/wiki/Flattening_the_curve

    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 ...

  7. Culture - Wikipedia

    en.wikipedia.org/wiki/Culture

    For example, Western restaurant chains and culinary brands sparked curiosity and fascination to the Chinese as China opened its economy to international trade in the late 20th-century. [19] "Stimulus diffusion" (the sharing of ideas) refers to an element of one culture leading to an invention or propagation in another.

  8. Box spread - Wikipedia

    en.wikipedia.org/wiki/Box_spread

    It is a combination of positions with a riskless payoff. In options trading, a box spread is a combination of positions that has a certain (i.e., riskless) payoff, considered to be simply "delta neutral interest rate position". For example, a bull spread constructed from calls (e.g., long a 50 call, short a 60 call) combined with a bear spread ...

  9. Backspread - Wikipedia

    en.wikipedia.org/wiki/Backspread

    Call backspread. The call backspread (reverse call ratio spread) is a bullish strategy in options trading whereby the options trader writes a number of call options and buys more call options of the same underlying stock and expiration date but at a higher strike price. It is an unlimited profit, limited risk strategy that is used when the ...