<prompt> Human: I invested heavily in my 401k, probably like most of you. Has there been much talk about what will happen when more people are withdrawing from their 401k than putting in?Hoping to find some useful info on the topic, thanks!Assistant: The assets of the 1000 largest employer plans including pensions and 401ks are about 10T.IRAs are another 9T or so.These are not all in public equities securities, but the bulk of the assets would be in those things. Its worth actually reading the links to see what these pools of money invest in. For example, large government pension plans have a lot of money, and they are not just in domestic stocks, but also international stocks, bonds, private capital, and real estate.The US stock market is about 30T, the US bond market is about 40T, and aggregate equity worldwide is about 100T.So, if everybody took out all their money at the same time, that would leave a mark, but thats not a very likely scenario. Human: Thanks for the information!Hopefully there isnt a huge discrepancy between money coming out in, seems like retirement funds make up a pretty big portion of our market.I guess as long as people are still contributing, things might not go so horribly.  <response>: People dont tend to just withdraw their entire 401k. They rebalance their asset allocation and take periodic withdrawals. 