[robertakarobin]

Thank you! So each exchange has its own formula for determining the price that gets shown on the ticker?

Let's say someone owns shares in a very low-volume stock — one that gets a couple trades a day, at most. Could they artificially increase the share price by offering their shares at a high price, then using a second account under their control to immediately buy them at the inflated price?

[elteto]

Yes, this is called cross-trading [0] and AFAIK is forbidden by the SEC.

[0] https://www.risk.net/definition/cross-trade