When you invest in an index fund, you’re investing in a group of assets. For example, instead of buying stock in Microsoft, you might choose to invest in Standard & Poor’s 500, an index fund based on the value of Microsoft and 499 other large companies. When the collective value of these companies increases, so does the value of your investment.
When an investor puts money into the Coinbase Index Fund, they are betting on the long term success of the crypto market as a whole, rather than a single cryptocurrency. Specifically, the value of the fund will be tied to that of four of the best performing cryptos in ratios that reflect their market capitalization — that is, their total market value. Bitcoin represents the largest share of the market, so it represents the largest share of the index fund — 62 percent — followed by 27 percent ether, 7 percent bitcoin cash, and 4 percent litecoin..
Nice article.
STEEM would be at around 2% if it were added today (by itself, with nobody else).
And as its value increases, more would have to be bought for the fund, which would spark a positive feedback loop, of course.