I'll take it that market means the market in general, not specifically stocks. If you are buying into something over price (and massively), why not take some profit off the table and re-invest into something that's not overprice, or not correlated to the particular asset class that you're currently invested in? You can trade around a core position, leaving a bulk of your investments intact, selling off, say, 20% to take profit, and look for somewhere else to deploy it into. You'll enjoy passive income from your slightly reduced holdings still, while freeing up cash to be deployed elsewhere, or back in the same asset class if the prices correct a little. And if you were wrong and the asset class continues to appreciate, you're still invested. Money goes where is it best treated.