Arithmetic Index

  

Categories: Metrics, Index Funds

A group of securities whose overall value is determined by giving equal weight to each security’s performance rather than weighting by other factors like its market weight (think Nasdaq 100) or price weight (the Dow Jones).

It’s nothing more than a straight-up, vanilla average of the performance of all the securities in the index. Like if we have in our index 1,000 shares of GE at $15 and 2,000 shares of MO at $58 and 5,000 shares of AAPL at $200, even though the weighted average in the index of AAPL is way more than the other stocks in there, the arithmetic index ignores the weighting. It just takes the plain jane average of 15, 58, and 200 and reports what the arithmetic mean index did.

Related or Semi-related Video

Finance: What is Compounding Value or Co...1771 Views

00:00

Finance allah shmoop What is calm Pounding value or compounding

00:06

interest Ah the power of compounding it makes tree's stronger

00:12

pollution More feral and the rich Well richer How so

00:16

Well let's start with compounds kissing cousin with six toes

00:20

Arithmetic calm pounding Right So the first was really geometric

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compounding Now we're talking about arithmetic compounding If you invest

00:27

a thousand bucks in a ten year bond that pay

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six percent a year in interest the dough comes back

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to you in a pattern that looks like this Like

00:35

every six months they pay thirty bucks and it's sixty

00:38

dollars a year Got it nice You get the total

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of sixteen hundred bucks back from your investment And the

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cash that came back to you you know came in

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small parts all along the way until you got about

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two thirds of it or sixty percent at the end

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right If you just spent that money and collected your

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thousand bucks at the end That's it Okay So that's

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arithmetic compounding the money comes to you You don't reinvest

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it Ding ding ding that's the key here and you

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just go buy burgers Okay So now let's look at

01:07

what six percent compound id looks like over the same

01:10

ten year period Wealth at the end of your one

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it's a thousand sixty bucks and no we're only going

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to compound it annually We probably should do the semi

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annually but we confuse you even more is we won't

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do that but then you essentially re invest that money

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and you get another six percent compounded on that thousand

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sixty instead of six percent compounded against the original thousand

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so by the end of your two you'll have a

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thousand one hundred twenty three sixty and by the end

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of your ten you'll have one thousand seven hundred ninety

01:36

dollars and eighty five cents So why do you make

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so much more money when you compound interest versus getting

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thirty bucks twice a year like you would in this

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bond example going by and burgers with it You don't

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wanna do that well essentially what's happening is that you're

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delaying your gratification of getting that sweet sweet cash or

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getting liquid Whatever you wanna call it by reinvesting your

02:00

gains year after year after year So do you have

02:03

that sort of self control Do you need the cash

02:06

Yeah that's The question If you for example have trouble

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making it home from your local pizza spot with the

02:12

pie intact well and compound interest Keeping the discipline to

02:16

not spend the money today and wait for the happiness

02:18

tomorrow Well when that may not be for you Sorry

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