<prompt> Human: VTSMX Vanguard Total Stock Market Index Fund Investor SharesVTSAX Vanguard Total Stock Market Index Fund Admiral Shares says: AdmiralTM Shares are a separate share class of Vanguard mutual funds that were created to pass along the savings that result from larger accounts to the investors who own them. On average, Vanguard Admiral Shares expense ratios are: 41 lower than our standard Investor Share class. 83 lower than the industry average.And: You must meetand maintaina minimum investment of: 10,000 for most index funds and tax-managed funds. 50,000 for most actively managed funds. 100,000 for certain sector-specific index funds.Apparently I may not have been making as much money as I could otherwise have been making.  <response>: Eventually they will automatically convert you. 