A reader asked me to comment on A GLD contango strategy by Izabella Kaminska. It talks about Paulson & Co earning a return on its $3.4bn woth of GLD shares.

Holding GLD, meanwhile, is cheaper and more cost efficient than buying bullion outright.

I would note that most gold ETFs have management fees around 0.4%. Considering that Bullion Vault’s storage fee is 0.12% and that Paulson would likely be able to get better rates than that from a bullion bank on $3.4bn worth of gold, it would be clear that GLD is not cheaper.

is it actually beginning to vacuum the world’s known gold supply float? Gold supplies, which previously, we might add, would have been put to work by central banks and bullion banks that owned them.

If you look at all ETFs and other storage services for which we have public numbers, together they only total 6.5% of all privately held gold. On top of that you can add the 30,000 or so tonnes of central bank gold. GLD is hardly vacuuming “known gold supply float”.

Given the low costs associated with holding GLD versus pure bullion, as well as the permanent contango in the market — it is quite clear the asset lends itself favourably to the ever popular contango storage strategy

Because GLD is at least 4 times more expensive to hold than an allocated account for someone of Paulson’s size, I’m not sure he could out arbitrage other players.

you buy GLD (perfect proxy for gold, but with no storage costs) you create a hedge by selling front month gold futures. You then lock in the spread further down the curve, and sit and collect the contango premium.

Firstly, GLD does have “storage costs”, that is the 0.4% management fee. The problem with the strategy she proposes is that by selling a futures contract she has hedged the GLD long position. So while you may earn the contango, you won’t make any money on the increase in the gold price because if the gold price increases, then you are losing on your short futures contract.

She has confused trading the basis (gap between spot and futures) with trading the price. You are either doing one or the other, but can’t do both at the same time with the same capital.