Share your insights or perspective on the financial matter presented in the input.

How do index funds actually work?
Now company A has been doing ok for couple of weeks, but then due to some factors in that company its stock has been tanking heavily and doesn't appear to have a chance to recover. In this kind of scenario, what does happen?  In this scenario, if that company is included in the index being tracked, you will continue holding until such time that the index is no longer including that company.   Index funds are passively managed because they simply hold the securities contained in the index and seek to keep the allocations of the fund in line with the proportions of the index being tracked.  In an actively managed fund the fund manager would try to hedge losses and make stock/security picks.  If the manager thought a particular company had bad news coming maybe they would offload some or all the position.  In an index fund, the fund follows the index on good days and bad and the managers job is to match the asset allocations of the index, not to pick stocks.