Second, one assumes that the misaligned values will eventually converge to the values indicated by the models. Third, if the alpha is positive, a long position is set up, i. We discuss statistical arbitrage in the context of cointegration in Section 2. Historically, sell-side market makers have implemented algorithms to provide liquidity to the market, while charging a premium for their sell-side services.
On the other hand, buy-side high-frequency traders have implemented algorithms that efficiently execute orders, absorbing liquidity and delivering profits.
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- The meaning and origin of the expression: Mind your Ps and Qs.
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More recently, the distinction between sell-side and buy-side has become blurry, as the two groups are becoming competitors. We discuss algorithmic trading in the context of optimal execution in Chapter Audience and prerequisites. About quantitative finance: P and Q. Differences between P and Q. Commonalities between P and Q. Key notation tenets. Operators and special functions. Probability and general distribution theory. Summary statistical features.
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Real world probability P. Risk-neutral probability Q. Discrete-time series. Continuous-time martingales. Multivariate statistics. Area of P - Q commonality. Specific P - Q overlap. Switch between P and Q. Another explanation suggests that "Ps and Qs" is short for "pleases" and "thank-yous", the latter of which contains a sound similar to the pronunciation of the name of the letter "Q".
Another proposed origin is from the English pubs and taverns of the 17th century. Bartenders would keep a watch on the alcohol consumption of the patrons; keeping an eye on the pints and quarts that were consumed.
P/Q-type calcium channel modulators.
As a reminder to the patrons, the bartender would recommend they "mind their Ps and Qs". Other origin stories, some considered "fanciful",  could come from French instructions to mind one's pieds feet and queues wigs while dancing. However, there is no French translation for this expression. Another proposal concerns the use of Norman French in medieval England; as the English dialect of the 11th century had no qs, [ dubious — discuss ] one must watch their usage in court or discourse with the French Norman conquerors.
From Wikipedia, the free encyclopedia. English-language idiom used to encourage one to be polite, presentable, and proper in a certain setting or context. For the song, see P's and Q's song. This article has multiple issues. Please help improve it or discuss these issues on the talk page. Learn how and when to remove these template messages.
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