"VOO for Lifers," please read.

First, I'm not a financial professional and this is not professional investment advice. I'm just looking broadly at the market and I'm a little concerned. Also, I'm not a VOO for lifer, but I don't hate that strategy. It seems to have worked very well in the past. \--- The S&P 500 as we know it is likely a lot riskier right now than you may believe. The top 10 companies in that 500 company index fund currently make up 39.62% of the weight, and 9 of those 10 are throwing money at AI. To make matters a little more concerning, several of them are outpacing their revenue with cap expenditure into AI and funding the expenses using debt. Basically, I think that most of those companies are pretty overvalued (especially Tesla with its ridiculous \~300 p/e ratio) and they could drop like a rock if the market takes a downturn. That's why I'm moving significant portions of my holdings to a **revenue-weighted** version of the S&P 500. I'm using Invesco's RWL, but there are many others that are basically identical. While their performances historically are damn near identical, revenue-weighted versions of the S&P 500 offer more diversification because the weighting inequality is much lower. For example, while the **top 10** of the normal S&P 500 make up nearly 40% of the fund, for RWL, the **top 24** make up around that much. Sure, it's going to be pretty similar in the long term, but in the short term, it looks like you're going to have a much smoother ride if the market takes a dive.