VWIUX is a mutual fund offered by Vanguard that focuses on providing investors with tax-exempt income from intermediate-term municipal bonds. This fund is designed for investors seeking a low-risk investment option with potential tax benefits. The "Admiral Shs" in the name indicates that this fund is only available to investors with a minimum investment of $50,000. Overall, VWIUX offers a diversified portfolio of high-quality municipal bonds, making it a suitable choice for those looking for tax-efficient income.