Hello, I know this is embarassing, but given that I am physicist, who just trades using math models, I probably will be excused for asking to translate a phrase, which I could not understand. Long story short: ZH article on quad witching had the following phrase:
"And speaking of the "extreme" gamma and delta positioning, McElligott noted that the sum of Nasdaq Gamma within 1% of spot is currently in the 98th %ile, while the sum of QQQ Delta across strikes is 96th %ile, which explains the forced dealer delta grab via overwriter roll-outs CEASE and aligns with the buyback blackout commencement."
Can someone translate in plain English what exactly does the "... the forced dealer delta grab via overwriter roll-outs CEASE.." mean? Thank you.
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