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Re:SoftBank unmasked as ‘Nasdaq whale’ that stoked tech rally by itsoktocry on Friday September 04, 2020 @12:54PM (#24376657)
>Buying shares also raises the price of shares

No it doesn't.

Shares prices are falling today. People are selling. That means people are also buying. Every transaction has a buyer and a seller. Yet prices still fall.

Re:SoftBank unmasked as ‘Nasdaq whale’ that stoked tech rally by quickthrowman on Friday September 04, 2020 @12:55PM (#24376672)
Let me rephrase: Buying a huge volume of shares equivalent to SoftBanks option delta exposure would raise the share price of whatever underlying the options were for.
Re:SoftBank unmasked as ‘Nasdaq whale’ that stoked tech rally by gunshai on Friday September 04, 2020 @03:08PM (#24377929)
What he's saying is that there is only so much liquidity at a given price point.

Given low enough liquidity even tiny volume purchases relative to the liquidity can increase the price of a share.