<prompt> Human: I have about 4k in my HSA and Im confused on investing it. I would like to invest that in one of the vanguard funds available. I likely wouldnt need or want to take it out, but if i absolutely needed to, how quickly can I liquidate?  <response>: A few days to a week.You need to sell some investments, and then get Vanguard to transfer the money to a checking account.Good luck. 