Portfolio heavily overweight in the US

[Nuclear Sushi]

Using Rakuten NISA, 42, long term investing for retirement in around 20 years or so and plan on staying in Japan forever. Currently have Emaxis Slim All Country and Emaxis Slim S&P 500 in my tsumitate. Current percentages so far are USA: 82.3%, International Developed (ex-US): 12.6% Emerging Markets: 5.2%. That really doesn’t bother me but I still feel like maybe I should diversify a bit more. I’m waiting on my iDeco approval so I suppose I could use that to diversify a bit more but I’m probably going to go with
https://www.rakuten-sec.co.jp/web/fund ... ルカントリー楽天DC
or
https://www.rakuten-sec.co.jp/web/fund ... 界INDEX楽天DC
or
https://www.rakuten-sec.co.jp/web/fund ... わら先進国株楽天DC for it.

Thinking maybe I should just stick the Emaxis all country in my growth portion as well and call it a day. Anyone have any thoughts? Thanks for reading, first time here, hello desu.

[ChapInTokyo]

If you have eMaxis slim all country and S&P500 you will not obtain much additional diversification from adding those other somewhat similar index funds, although adding wide indexes covering non-US markets will somewhat offset the US concentration exacerbated by the S&P500 fund in your current portfolio…

The key factor to think about is whether their prices move in or out of step with the other holdings in your portfolio.

You might benefit from reading some books on investing fundamentals such as John Bogle’s “The Little Book of Common Sense Investing” or John Kay’s “ The Long and the Short of It (International edition): A guide to finance and investment for normally intelligent people who aren’t in the industry”.

Information contained in such books will be quite useful when thinking about what you should look for as well as avoid in putting together your portfolio.

[Nuclear Sushi]

If you have eMaxis slim all country and S&P500 you will not obtain much additional diversification from adding those other somewhat similar index funds.

The key factor to think about is whether their prices move in or out of step with the other holdings in your portfolio.

You might benefit from reading some books on investing fundamentals such as John Bogle’s “The Little Book of Common Sense Investing” or John Kay’s “ The Long and the Short of It (International edition): A guide to finance and investment for normally intelligent people who aren’t in the industry”.

Information contained in such books will be quite useful when thinking about what you should look for as well as avoid in putting together your portfolio.

Understood. Thanks for the reply and books, they look good for a newbie like me. I still have some time until my iDeco is decided so I’ll keep doing some research and maybe have to change a NISA fund around to not conflict with my iDeco so much. Will look into more diversification as I agree it’s the better choice.