> Why else would they change the rule ?

These indices aim to replicate the market. They’re not trying to pick stocks.

There is a serious argument for saying they fail to replicate the market if they structurally exclude trillions of dollars of it.

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yxhuvud 6 minutes ago | parent | next [-]

It defeats the purpose of the value setting part of the IPO if there are guaranteed buyers. It would be better for the market and for the indices if they only hopped onto new entries of the market after any initial instability has passed.

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lenerdenator 41 minutes ago | parent | prev [-]

They also exclude many other things that are of economic value, because they could cause structural or social harm in the markets.

	▲	s1artibartfast 10 minutes ago \| parent [-]
		Yes, but a stock market index is just that. It is intended to track stocks, not meth sales or the phase of the moon. Most of these indicies intend to match the largest companies on the market - going up when they do and going down when they do. If someone doesnt want that, they can pick a different index or invest in a managed fund. Companies like vanguard also offer custom EFTs where you can exclude certian companies if you want - probably the simplest option. But then you cant complain if they go up and you miss out. PS: Yes, there are several cannabis ETFs if you are into that kinda thing. look into MJ, WEED, MSOS, and YOLO.