According to CoinMeta, since its establishment in September 2010, the Vanguard S &P Mid-Size Growth ETF ( IVOG ) has achieved an average annual return of 12.31%. This ETF holds shares in 245 mid-size companies, with a median market value of $14.2 billion. If an investor invests $500 per month, based on this return rate, they could accumulate $229,339 after 15 years, $448,151 after 20 years, $839,138 after 25 years, and potentially over $1 million after 27 years. Although future returns cannot be guaranteed, this ETF provides an option for investors who wish to invest in different markets with growth potential.