Year over Year (YOY)

Posted in Finance, Accounting and Economics Terms, Total Reads: 5396

Definition: Year over Year (YOY)

Year over Year (YOY) is a method to compare a parameter or a value e.g. company's financial performance or income/profit with same parameter's value exactly an year back. Any parameter that can be measured can be evaluated using yoy. Even performance within a time period e.g. quarter Q1 can be compared with the same period in the previous year.

Various financial instruments can be evaluated with YOY e.g. Mutual funds, companies financial performance, shares, bonds etc.

Year over Year(YOY) is mainly useful in showing the trends of a parameter/financial value whether the value is on a growth path or a decline one.


If a company claims that their share price on Jan 1 of current has risen YOY in last 5 years. This means that the companies share price currently is more than last year's share price. now if they say 5 years, this means that last years share price was more than its previous year and so on till 5th year.

Hence, this concludes the definition of Year over Year (YOY) along with its overview.

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