I don't understand this logic. Does whole market mean scamming companies too?

Yes. That’s what passive investing is. You give money to the passive fund, the passive fund buys the market. No regard to price or any other metric.

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matwood an hour ago | parent | prev [-]

Fun fact, both Enron and Lehman Brothers were in the S&P 500 when they went bankrupt. So yes, the whole market or even the market of the largest companies, includes some that may not be great companies. The beauty of the index is you don't have to know or care, since it'll take care of itself over time.

	▲	derektank 7 minutes ago \| parent [-]
		>The beauty of the index is you don't have to know or care, since it'll take care of itself over time As long as there are active investors in the market conducting price discovery. Which there always will be, just pointing out that someone has to care, even if you don’t