Precious metals bullion/coins
Patents
Positions in sports outcomes (either with bookmakers odds or betting pools)
Positions in real life outcomes (predictions markets and British oddsmaker offering real life outcomes)
Non perishble objects and collectables of any kind that can be re-sold including art
Hotel reservations where you can change name or add name (almost all hotel allow for it, maybe some minor fee, but it's irrelevant compared to the potential gain you can make by selling your reservation to somebody else who needs it)
Airline reservations where you can change name
If you are a freight forwarder/NVOCC you can buy container space slots on ships and then sell it to other freight forwarders/NVOCCs.
Ad space (physical, newspaper, magazine and online) where you book the space and then have in your network people who might be interested in that very space so you can run their ads and they can re-imburse you
... and I am sure there are many others
I see 3 markets:
Stock markets
Domain markets
Crypto exchanges
I wonder if those 3 markets are somehow special or if there are more.
With the stock market, you can pick a company and invest in it. With Domain markets, you can invest in a single domain you believe in. Same for crypto markets where you can invest in a single crypto currency.
With ETFs you can't invest in a specific thing. You are investing in some category.
So an ETF is an exchange traded fund. Public equities are also exchange traded but that doesn't mean that ETFs are traded on the stock market.
> With ETFs you can't invest in a specific thing. You are investing in some category.
Not really though?
You can buy gold, silver, crude oil and a bunch of other commodities. You have currency ETFs, Real Estate ETFs, etc.
There's volatility ETFs if you want to hedge risk. There's tons of "specific things".
You also have futures markets. So you can also buy a futures contract for corn or something.
There's also betting markets, but those aren't really "buying anything". I guess you can buy an "athlete/team's performance" by betting on them.