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The short interest ratio (also called days-to-cover ratio) [1] represents the number of days it takes short sellers on average to cover their positions, that is repurchase all of the borrowed shares. It is calculated by dividing the number of shares sold short by the average daily trading volume, generally over the last 30 trading days.
In finance, statistical arbitrage (often abbreviated as Stat Arb or StatArb) is a class of short-term financial trading strategies that employ mean reversion models involving broadly diversified portfolios of securities (hundreds to thousands) held for short periods of time (generally seconds to days). These strategies are supported by ...
A long box-spread can be viewed as a long strangle at one pair of strike prices, and , plus a short strangle at the same pair of strike prices. The long strangle contains the two long (buy) options. The short strangle contains the two short (sell) options. A short box-spread can be treated similarly.
In a short sale, investors sell borrowed shares with the hope of repurchasing them later at a lower price. 130–30 funds work by investing, say, $100 in a basket of stocks. They then short $30 in stocks that they believe to be overvalued. Proceeds from that short sale are then used to purchase an additional $30 in stocks thought to be undervalued.
Empirical investigations of the J curve have sometimes focused on the effect of exchange rate changes on the trade ratio, i.e. exports divided by imports, rather than the trade balance, exports minus imports. Unlike the trade balance, the trade ratio can be logarithmically transformed regardless of whether a trade deficit or trade surplus ...
Tree returning the OAS (black vs red): the short rate is the top value; the development of the bond value shows pull-to-par clearly . A short-rate model, in the context of interest rate derivatives, is a mathematical model that describes the future evolution of interest rates by describing the future evolution of the short rate, usually written .
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Short or longer timeframes are used for alternately shorter or longer outlooks. High and low levels—80 and 20, or 90 and 10—occur less frequently but indicate stronger momentum. The relative strength index was developed by J. Welles Wilder and published in a 1978 book, New Concepts in Technical Trading Systems , and in Commodities magazine ...