The article link: https://www.bloomberg.com/news/articles/2019-06-03/alphabet-falls-to-lowest-in-five-months-as-doj-mulls-probe
Google parent Alphabet Inc., Facebook Inc. and Apple Inc. tumbled as the companies appear set to undergo U.S. antitrust probes after the Justice Department and the Federal Trade Commission agreed to split up oversight of technology giants.
I am having hard time understanding this sentence. Especially
"... as the companies appear set to undergo U.S. antitrust probes".
What does "appear set to" mean? Is set a verb or a noun? I don't know what kind of grammar it is to put 2 verbs together. Can someone explain it to me?
Also,
agreed to split up oversight of technology giants
I know what each individual word means, but when they combined together, I don't get what the FTC is trying to do with these technology giants. Do they want to supervise these companies or they are trying to split these companies into smaller ones?
One last thing, why does it say "Google parent" instead of "Google's parent"? Is it correct grammar?