This situation is unique to the US. I don't know if any hedge funds are using investment banks in this fashion. I don't **think** so, because we should have heard about it by now if they were.
The US exchange are certainly enforcing position limits -- the point here is that the biggest specs are in a situation where they are not subject to the limits. This simply has to be stopped.
Legitimate industry hedgers, aka 'commercials', should continue to be exempt from position limits, of course.
You are a fount of knowledge. Thanks very much for sharing.
Mark for future reference.
Thanks a bunch, SAJ!