RedSun, I mean that it's easy to support price equivalence between HP and NG,
because HP stops to trade with final price 1 day before NG expiry,
and some hedge funds can easily close NG and HP at the same time.
So I think "physical premium or discount" is close to zero...
With HH vs NG situation is different, HH final price is known only when NG is expired,
and you can't trade and close it anymore. Only commercial do something like "arbitrage" here.
To most of the traders, we want liquidity. Since NG is the most liquid, most of us trade trade NG market. I do not hold them to expiry. Mostly close out days before that. Or roll over to next month. So the NG/HP/HH do not make any difference to me.
I used to work for energy company. We do not care about NG/HP/HH. But we do not like the slippage of HP/HH. They are similar, not the same. We also used OTC contacts due to the large volume.
But some trading desks of energy firms can arbitrage the physical vs paper contracts to their advantage. We can trade to the very last day and most of the financial firms can't do it. They will have to pay us to take over their NG contracts since they do not physical gas to deliver or take delivery.
