This looks like a Box strategy when someone is trying to arb some funding inefficiencies. It would be very cheap to put this on as it doesn't take any directional risk.Interesting , wonder what they're up to next ...
EDIT: Iron butterfly? What is it?
By @generalenthu
Last updated at: 2022-02-01 20:48:59 UTC
volume every minute where volume >= 500 contracts
Minute price strike option_type Expiry incVol 15:47 932 300 put 2022-02-18 2500 15:47 932 300 call 2022-02-18 2500 15:47 932 500 call 2022-02-18 2500 15:47 932 500 put 2022-02-18 2500
In it's essence it is very likely a synthetic long paired with a synthetic short. And depending on which leg is long or short, you'll end up with excess or deficit cash of $50 million until 2/18.
If the stock is likely to pin at one of these strikes, it could get fugly. Clearly that's not a major cause for concern.
More here: obviously you could also think of this as a bps paired with a bcs, both at the same strikes.