[NativeNewYorker]

This is my field too, and the article does not set the seemingly enormous numbers in the context of net exposure.

[getsoutalive]

I doubt JPM's "net exposure" is available to anyone outside the firm and only a few inside.

Yes, these things are probably liquid and hedged to mitigate risk. However, during market dislocations, that liquidity can evaporate quickly and a hedge is only as solid as the party on the other end of that trade.

During normal market conditions, there is generally not a problem. It is when one of those "unpredictable events" comes along that markets can lock up. If the past few months are any indication, it is possible we may see such an event in the not too distant future.