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		<title>Natural filtration</title>
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		<summary type="html">&lt;p&gt;124.197.98.124: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{Unreferenced|date=December 2009}}&lt;br /&gt;
&lt;br /&gt;
In [[finance]], &#039;&#039;&#039;holding period return&#039;&#039;&#039; (HPR) is the total return on an [[asset]] or [[Portfolio (finance)|portfolio]] over the period during which it was held. It is one of the simplest measures of [[investment performance]]. &lt;br /&gt;
&lt;br /&gt;
HPR is the percentage by which the value of a portfolio (or asset) has grown for a particular period. It is the sum of [[income]] and [[capital gains]] divided by the initial period value (asset value at the beginning of the period).&lt;br /&gt;
&lt;br /&gt;
&#039;&#039;&#039;HPR&#039;&#039;&#039; = ((Present Value, or face Value, End-Of-Period Value) + (Any Intermediate Gains e.g. Dividends) - (Initial Value))  /(Initial Value)&#039;&#039;&#039;&lt;br /&gt;
&lt;br /&gt;
&amp;lt;math&amp;gt;HPR_n \ = \ \frac{Income + (P_{n+1} - P_n)}{P_n}&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
==Example==&lt;br /&gt;
&amp;lt;!--Where, in this example, is HPR mentioned?  Example shortly to be deleted. --&amp;gt;&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot; style=&amp;quot;text-align:center&amp;quot; align=&amp;quot;right&amp;quot;&lt;br /&gt;
|+Example: Stock with low volatility and a regular quarterly dividend&lt;br /&gt;
|-&lt;br /&gt;
! End of: !! 1st Quarter !! 2nd Quarter !! 3rd Quarter !! 4th Quarter&lt;br /&gt;
|-&lt;br /&gt;
! Dividend&lt;br /&gt;
| $1 || $1 || $1 || $1&lt;br /&gt;
|-&lt;br /&gt;
! Stock Price&lt;br /&gt;
| $98 || $101 || $102 || $99&lt;br /&gt;
|-&lt;br /&gt;
! Quarterly ROI&lt;br /&gt;
| -1%|| 4.08%|| 1.98%|| -1.96%&lt;br /&gt;
|-&lt;br /&gt;
! Annual ROI&lt;br /&gt;
| || ||  || &#039;&#039;&#039;3%&#039;&#039;&#039;&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
To the right is an example of a stock investment of &#039;&#039;&#039;one share purchased at the beginning of the year for $100&#039;&#039;&#039;. At the end of the first quarter the stock price is $98.  This is a capital loss.  The stock share bought for $100 can only be sold for $98, which is the value of the investment at the end of the first quarter.  The first quarter return is:&lt;br /&gt;
&lt;br /&gt;
($98 – $100 + $1) / $100 = -1%&lt;br /&gt;
&lt;br /&gt;
Since the final stock price is $99, the annual ROI is:&lt;br /&gt;
&lt;br /&gt;
($99 ending price - $100 beginning price + $4 dividends) / $100 beginning price  =  3% ROI.&lt;br /&gt;
			   &lt;br /&gt;
If the final stock price had been $95, the annual ROI would be:&lt;br /&gt;
&lt;br /&gt;
($95 ending price - $100 beginning price + $4 dividends) / $100 beginning price = -1% ROI.&lt;br /&gt;
&lt;br /&gt;
==Annualizing the holding period return==&lt;br /&gt;
===Over multiple years===&lt;br /&gt;
To &#039;&#039;annualize&#039;&#039; a holding period return (translate it into percentage per year), then&lt;br /&gt;
&lt;br /&gt;
[[AHPR|Annualized HPR]] = (((Present Value, or face Value, End-Of-Period Value) + (Any Intermediate Gains e.g. Dividends) - (Initial Value))  /(Initial Value)) + 1 ) ^ ( 1 / (Years) ) - 1&lt;br /&gt;
&lt;br /&gt;
&amp;lt;math&amp;gt;\mathrm{Annualized\, HPR}_{n}=\left(\frac{D+(P_{n+1}-P_{n})}{P_{n}}+1\right)^{\frac{1}{t}}-1&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
t being number of years that have passed. For example, if you have held the item for half a year, year would equal 1/2.&lt;br /&gt;
&lt;br /&gt;
===From quarterly holding period returns===&lt;br /&gt;
To calculate an annual HPR from four quarterly HPRs:&lt;br /&gt;
&lt;br /&gt;
If HPR1 through HPR4 are the holding period returns for four consecutive periods, the annual &#039;&#039;&#039;HPR&#039;&#039;&#039; is calculated as follows:&lt;br /&gt;
&lt;br /&gt;
&amp;lt;math&amp;gt;1+HPR=\left(1+HPR_{1}\right)\left(1+HPR_{2}\right)\left(1+HPR_{3}\right)\left(1+HPR_{4}\right)&amp;lt;/math&amp;gt;&lt;br /&gt;
&lt;br /&gt;
{{DEFAULTSORT:Holding Period Return}}&lt;br /&gt;
[[Category:Basic financial concepts]]&lt;br /&gt;
[[Category:Mathematical finance]]&lt;/div&gt;</summary>
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