Author Topic: How to recreate VTSAX with VFIAX/VIMAX/VSMAX?  (Read 2028 times)

ardrum

  • Stubble
  • **
  • Posts: 166
  • Location: Ohio
How to recreate VTSAX with VFIAX/VIMAX/VSMAX?
« on: January 07, 2018, 07:40:51 AM »
I know it is pretty much splitting hairs, and I think I've heard before that VTSAX is mostly the S&P500 by weight (70-80%?), but is there a way to get a rough recreation of VTSAX through a combination of VFIAX, VIMAX, and VSMAX?  The latter three are options in my company's 401k with no VTSAX option.

Wintergreen78

  • Stubble
  • **
  • Posts: 116
Re: How to recreate VTSAX with VFIAX/VIMAX/VSMAX?
« Reply #1 on: January 07, 2018, 09:02:13 AM »
Sure, if you want to re-create VTSAX, you would buy each of those, in proportion to their total capitalization. A quick search finds the SP500 about $23,000,000 million.
http://siblisresearch.com/data/total-market-cap-sp-500/

You could use the Russell 2000 and the Russell middcap indexes to figure the total capitalization for small cap and mid cap stocks

http://www.ftserussell.com/research-insights/russell-reconstitution/market-capitalization-ranges

There is probably a fancier way to do this, or a direct source for the numbers somewhere, but I usually go for quick and easy.

secondcor521

  • Handlebar Stache
  • *****
  • Posts: 2232
  • Age: 50
  • Location: Boise, Idaho
  • Big cattle, no hat.
    • Age of Eon - Overwatch player videos
Re: How to recreate VTSAX with VFIAX/VIMAX/VSMAX?
« Reply #2 on: January 07, 2018, 09:06:37 AM »

Wintergreen78

  • Stubble
  • **
  • Posts: 116
Re: How to recreate VTSAX with VFIAX/VIMAX/VSMAX?
« Reply #3 on: January 07, 2018, 09:52:36 AM »
Whoops - I looked a little more closely at how the Russel indexes are broken down. It would probably be better to find the market capitalization numbers for the underlying indexes for VIMAX and VSMAX and use those instead, if you want to be more precise in your allocations.


ardrum

  • Stubble
  • **
  • Posts: 166
  • Location: Ohio
Re: How to recreate VTSAX with VFIAX/VIMAX/VSMAX?
« Reply #4 on: January 07, 2018, 10:24:26 AM »
Cool, thanks everyone!  I looked at "avg market cap USD" off morningstar. 

Looks like it's weighted something like this:

VFIAX 84.1%
VIMAX 12.4%
VSMAX 3.5%

MDM

  • Walrus Stache
  • *******
  • Posts: 9493

ardrum

  • Stubble
  • **
  • Posts: 166
  • Location: Ohio