Add training workflow, datasets, and runbook

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Glossary 969
Equity Option: an option that has common stock as its underlying security. See also
Non-Equity Option.
Equity Requirement: a requirement that a minimum amount of equity must be
present in a margin account. Normally, this requirement is $2,000, but some bro­
kerage firms may impose higher equity requirements for uncovered option writing.
Equivalent Positions: positiohs that have similar profit potential, when measured
in dollars, but are constructed with differing securities. Equivalent positions have
the same profit graph. A covered call write is equivalent to an uncovered put write,
for example. See also Profit Graph.
Escrow Receipt: a receipt issued by a bank in order to verify that a customer ( who has
written a call) in fact owns the stock and therefore the call is considered covered.
European Exercise: a feature of an option that stipulates that the option may be
exercised only at its expiration. Therefore, there can be no early assignment with
this type of option.
Exchange-Traded Fund (ETF): an index fund that is listed on a stock exchange.
Options are listed on some ETFs. See also Index Fund.
Ex-Dividend: the process whereby a stock's price is reduced when a dividend is
paid. The ex-dividend date (ex-date) is the date on which the price reduction takes
place. Investors who own stock on the ex-date will receive the dividend, and those
who are short stock must pay out the dividend.
Exercise: to invoke the right granted under the terms of a listed options contract.
The holder is the one who exercises. Call holders exercise to buy the underlying
security, while put holders exercise to sell the underlying security.
Exercise Limit: the limit on the number of contracts a holder can exercise in a fixed
period of time. Set by the appropriate option exchange, it is designed to prevent
an investor or group of investors from "cornering" the market in a stock.
Exercise Price: the price at which the option holder may buy or sell the underlying
security, as defined in the terms of his option contract. It is the price at which the
call holder may exercise to buy the underlying security or the put holder may exer­
cise to sell the underlying security. For listed options, the exercise price is the
same as the striking price. See also Exercise.
Expected Return: a rather complex mathematical analysis involving statistical dis­
tribution of stock prices, it is the return an investor might expect to make on an
investment if he were to make exactly the same investment many times through­
out history.