u/One_Intention_7666 5.0 4 ideas

The author has learned that index funds like SPY tend to outperform actively managed funds over the long term and are inherently diversified. This understanding leads the author to consider a portfolio consisting solely of index funds, implying a long-term, passive, buy-and-hold strategy. The author is questioning if a simple, long-term investment in SPY (or similar funds) is a viable and safe strategy, indicating a default position of holding it unless significant risks are presented. The primary risk discussed is that the S&P 500 is not as diversified as it seems, with heavy concentration in US-only, large-cap tech stocks, exposing the portfolio to single-country and sector-specific downturns.

The author specifically names VOO as an example of an index fund they are considering for their entire portfolio. The author's research suggests that a simple strategy of buying and holding VOO is effective and safe for the long run, prompting them to question the need for more complex portfolio construction. The post implies a default long-term holding strategy for VOO, pending any discovery of major, unforeseen risks. The sentiment is cautiously optimistic about this approach. Commenters highlight concentration risk, as VOO is heavily weighted towards a few US tech giants, and lacks international exposure, which could lead to underperformance if the US market stagnates.

The S&P 500 (tracked by VOO/SPY) is concentrated in a single country (USA) which can experience downturns. To mitigate this single-country risk, an investor should diversify globally. VT is a total world stock market ETF that accomplishes this in a single fund. The speaker explicitly recommends investing in VT to achieve global diversification and avoid the risks associated with being restricted to only the US market. A globally diversified fund may underperform a US-only fund during periods of strong US market outperformance. It also holds companies in less stable geopolitical regions.

The original poster's strategy of only holding SPY/VOO creates a portfolio that is 100% exposed to the US market. To properly diversify, an investor should add exposure to international markets. VXUS tracks the total international stock market (ex-US). The speaker recommends buying VXUS alongside a US index fund like VOO to build a globally diversified portfolio and reduce concentration risk. International markets can underperform the US market for extended periods. The fund is also exposed to currency fluctuations and geopolitical risks in other countries.