Someone translate this into layperson-speak for me

"the tape"? "e-mini"?
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the tape is the recorded changes in price of a security from buyers and sellers

Here's e-Mini explained succinctly.

What this means is that it was an investor who thought this wouldn't show because the price of e-Minis are low enough that their insider trading wouldn't be noticed in large volumes.
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thank you! that was the missing context I needed
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It's also possible it's a grifter without much ready cash, trading on margin in a low-priced security they could afford to sell off piecemeal. No idea, though.

Source for definition: www.cmegroup.com/markets/equities/sp/e-mini-sandp500.quotes.html
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