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  2. List of emoticons - Wikipedia

    en.wikipedia.org/wiki/List_of_emoticons

    A simple smiley. This is a list of emoticons or textual portrayals of a writer's moods or facial expressions in the form of icons.Originally, these icons consisted of ASCII art, and later, Shift JIS art and Unicode art.

  3. SPDR S&P 500 ETF Trust - Wikipedia

    en.wikipedia.org/wiki/SPDR_S&P_500_ETF_Trust

    The ETF is designed to track the S&P 500 index by holding a portfolio comprising all 500 companies on the index. [1] It is a part of the SPDR family of ETFs and is managed by State Street Global Advisors. [2] The fund is the largest and oldest ETF in the USA. Legally, the fund is set up as a unit investment trust.

  4. Regional indicator symbol - Wikipedia

    en.wikipedia.org/wiki/Regional_indicator_symbol

    These were defined by October 2010 as part of the Unicode 6.0 support for emoji, as an alternative to encoding separate characters for each country flag. Although they can be displayed as Roman letters, it is intended that implementations may choose to display them in other ways, such as by using national flags .

  5. Pumpkin pie - Wikipedia

    en.wikipedia.org/wiki/Pumpkin_pie

    In the 19th century, the English pumpkin pie was prepared by stuffing the pumpkin with apples, spices, and sugar and then baking it whole. [19] [20] In the United States after the Civil War, the pumpkin pie was resisted in Southern states as a symbol of Yankee culture imposed on the South, where there was no tradition of eating pumpkin pie. [21]

  6. Derivative (finance) - Wikipedia

    en.wikipedia.org/wiki/Derivative_(finance)

    In finance, a derivative is a contract between a buyer and a seller. The derivative can take various forms, depending on the transaction, but every derivative has the following four elements:

  7. Cathie Wood - Wikipedia

    en.wikipedia.org/wiki/Cathie_Wood

    In 2023, ARKK was the top-performing actively traded U.S. diversified ETF. [20] However, ARKK fell 24% in 2021 and, in the first quarter of 2022, it was the worst performer among equity funds covered by Morningstar, Inc. [ 21 ] For the 10 years ended December 31, 2023, it generated a 122% return, less than half of the Nasdaq-100 's 330% return.

  8. Notation in probability and statistics - Wikipedia

    en.wikipedia.org/wiki/Notation_in_probability...

    Random variables are usually written in upper case Roman letters, such as or and so on. Random variables, in this context, usually refer to something in words, such as "the height of a subject" for a continuous variable, or "the number of cars in the school car park" for a discrete variable, or "the colour of the next bicycle" for a categorical variable.

  9. Von Neumann–Morgenstern utility theorem - Wikipedia

    en.wikipedia.org/wiki/Von_Neumann–Morgenstern...

    Hence expressions like u X (L) + u Y (L) and u X (L) − u Y (L) are not canonically defined, nor are comparisons like u X (L) < u Y (L) canonically true or false. In particular, the aforementioned "total VNM-utility" and "average VNM-utility" of a population are not canonically meaningful without normalization assumptions.