A fund here is a basket and a rule, both fixed the moment it opens. Money put in buys that basket at official prints, through the books, so what a fund is about to buy cannot be traded ahead of. Getting out never waits and never sells: a redemption hands back a slice of exactly what the fund holds.
No manager, no fee, no owner. The two jobs that keep a fund running, putting new money to work and taking in what the books delivered, can be done by anyone.
Reading the chain.
Pick the stocks. Weights are split evenly unless you type your own, in percent, separated by commas. The basket cannot be changed afterwards, by you or by anyone.