he $40K 1977 condo would be going for ~$209K today just via generic inflation (he claims only $110K today). Certainly still no match for today's real prices, but still that's a bad way to introduce yourself to knowledgeable readers be so far off.
The supreme laziness not just to put the prompt into an AI tool, "$40k in 1977 in today's dollars inflation-adjusted," is frightening. And an editor not doing it - more frightening.
Interesting note: Vanguard started its no load/no fee S&P index funds in 1976. If you put $40k in it in 1977 in a basic SP500 Index Fund, you would have $3.6M. Even a good ski town real estate investment is no match for stocks.
Let’s start with mountain town real estate. The Nobis family (Jeremy, the big mountain skier who changed our sport, his fellow World Cup racing sister Shannon, mother Nancy, and father Craig) moved to Park City from Wisconsin in 1977. After shivering in their RV for three nights, they bought a condo for $40,000. Mom and dad raised skiers on blue-collar incomes—Nancy as a trauma nurse and Craig as a handyman. Time jump to 2025, and the median price for a Park City condo is $1.6 million.
Calculation of SP500 Returns
Investing $40,000 in an S&P 500 index fund in 1977 would have grown substantially by today, thanks to the power of compound interest and the historical performance of the S&P 500.
The S&P 500 has delivered an average annual return of approximately 10.13% since 1957.
Using this average annual return, we can estimate the growth of a $40,000 investment over 48 years (from 1977 to 2025) using the compound interest formula:
A=P×(1+r)nA = P \times (1 + r)^nA=P×(1+r)n
Where:
- AAA is the amount of money accumulated after n years, including interest.
- PPP is the principal amount ($40,000).
- rrr is the annual interest rate (10.13% or 0.1013).
- nnn is the number of years the money is invested (48 years).
Plugging in the numbers:
A=40,000×(1+0.1013)48A = 40,000 \times (1 + 0.1013)^{48}A=40,000×(1+0.1013)48
A=40,000×(1.1013)48A = 40,000 \times (1.1013)^{48}A=40,000×(1.1013)48
A≈40,000×88.74A \approx 40,000 \times 88.74A≈40,000×88.74
A≈3,549,600A \approx 3,549,600A≈3,549,600
Therefore, a $40,000 investment in an S&P 500 index fund in 1977 would be worth approximately $3,549,600 today, assuming an average annual return of 10.13% and reinvestment of dividends.