Just out of curiosity. In a portfolio of about 100k, S&P 500 index makes up about 75% of my portfolio, including retirement and taxable accounts. Most of my new money goes into this fund as well, so the percentage of my port folio in that fund is getting larger.
I have some other funds in retirement, such as some other large cap funds that beat the S&P 500 some years with similar expense ratio like Windsor 2, and I have a great REIT fund (VGSIX), also some small cap funds and bond funds, international stock, etc (less than 10% of portfolio).
I am curious to see who else relies so heavily on index funds that are exclusively for S&P 500.