Earlier quoted context omitted.
The not-insider-trading possibility: It's possible someone was selling contracts as a hedge since the tech market has been really bad this week. A market maker was obligated to buy the contracts. The person selling the contracts gets $22k in premium, and misses out on the pop. The market maker will absolutely exercise the contracts and profit. (This is coming from someone who sold APPL calls expiring tomorrow for .08…
I understood nothing of what you said, what is a good resource/starting point to understand the meaning of this?
In terms of how the market maker is involved:
https://www.projectfinance.com/options-market-maker/
hedging: