US funds, specifically VSGDX.US, also known as Vanguard Target Retirement 2060 Fund, are influenced by several factors: Stock Market Performance: VSGDX invests in stocks. Strong stock market performance typically increases its value.

Bond Market Performance: The fund also invests in bonds. Bond yields and prices affect the fund's overall value.

Interest Rate Changes: Rising interest rates usually decrease bond prices, impacting the fund. Falling rates can increase bond values.

Inflation: Higher inflation can erode the real value of investments, potentially affecting the fund negatively.

Economic Growth: Strong economic growth often supports higher stock valuations, benefiting the fund.

Investor Sentiment: General optimism or pessimism in the market can drive buying or selling pressure, affecting the fund's price.

Fund Flows: Large inflows of money into the fund can increase demand and potentially the price, while outflows can decrease it.

Target Date: As the target date (2060) approaches, the fund's asset allocation will gradually shift to be more conservative, affecting its risk profile and potential returns.