9 Comments
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eric tao's avatar

after a big drops (-4%) option markets can often misprice risk and also liqudity dries up.. traders margin call to buy calls to hedge short positions and etc...

they spend a fortune on all this, with loads of whiz kids involved, and meanwhile in India someone who doesn't even know the quadratic formula is whining because they lost 100 rupees //it's kinda funny//

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David Taylor's avatar

Fascinating. Looking forward to your session tomorrow.

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SpotGamma's avatar

thanks David. i’m gonna try and see what Mat Cashman thinks but i’m guessing “no comment”

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Alex Marion's avatar

If skew is mispriced and Jane Street is simply taking the other side, how is that not simply a stat arb play? I’m

struggling to see the market manipulation angle here unless the

claim is that Jane Street was somehow manufacturing the mispriced skew before arbing it…

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Jim Davis's avatar

The accusation is clear. THEY caused the mispricing.

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SpotGamma's avatar

exactly. and the millennium lawsuit makes this debate more interesting…

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Alex Marion's avatar

It’s still unclear how they caused a mispricing of option skew via the futures market, or maybe I misread

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Alex Marion's avatar

It was standard arbitrage, as discussed here

https://t.co/Rhp6ffJGkj

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SpotGamma's avatar

yeah well the tough part is one man’s arb is another’s manipulation. it seems like they were warned though and carried on anyway…

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