Last week I showed you that the QL Spot Estimate is, at its core, a weighted sum of two funds. Which raises a question I should have answered a long time ago: what are these things? If two share prices carry the whole model, you deserve to know what you're actually looking at.
So this issue does one thing: it explains the two vehicles the entire uranium-equity world watches.
A fund that buys and never sells
The Sprott Physical Uranium Trust — SPUT, ticker U.UN in Toronto — is about as simple as a financial product gets on paper. It holds physical uranium. Drums of U3O8, sitting in licensed storage facilities. No mines, no employees digging anything up, no hedge book. You buy a share, you own a slice of a very radioactive warehouse.
The interesting part is how it grows. SPUT runs what's called an at-the-market program: when its shares trade above the value of the uranium it holds, it's allowed to issue new shares, take the cash, and buy more pounds. When shares trade below that value, the program stops. And here's the detail that matters more than anything else: the trust doesn't sell. There is no mechanism for those pounds to come back out and return to the market.
That makes SPUT a one-way door. Uranium goes in when investors are eager. It never comes out. Every pound it buys is a pound utilities can no longer have.
The quieter twin
Yellow Cake PLC — YCA in London — was built in 2018 around one clever contract: a long-term agreement with Kazatomprom, the world's largest producer, giving it the right to buy uranium at spot prices, year after year. It raises money, exercises the option, stores the pounds, and mostly sits still. No at-the-market machinery, fewer headlines — but the same basic shape: physical uranium, wrapped in a share, that as good as never sells.
Two vehicles, one idea. That's why my model leans on them — a point I made last week and won't re-argue here.
Who makes money here?
Fair question: if the uranium never leaves, where do the returns come from? Two answers, for two different parties. Sprott, the manager, earns a fee — 0.35% of the trust's net asset value per year — so every new share the at-the-market program mints grows the pot that fee is charged on. Sprott gets paid for the trust growing, never for selling. Investors, on the other hand, are making a pure price bet: no dividend, no cash flow. The pounds stay in the warehouse; you exit by selling your shares to the next person who wants in.
The number to watch: premium and discount
Each trust has a NAV — net asset value: pounds held, times the uranium price, divided by shares. Compare the share price to NAV and you get the single most information-dense number in this market.
Trading at a premium? Investors want more uranium exposure than currently exists in wrapped form — and in SPUT's case, the premium literally unlocks the buying machine: new shares, fresh cash, physical pounds pulled off the market. Trading at a discount? The equity market values uranium below its posted price, and the machine goes quiet.
This is not a hypothetical mechanism. In the months after SPUT launched in July 2021, it hoovered up tens of millions of pounds through exactly this loop — and the spot price ran from roughly $30 in mid-August to about $50 by mid-September. A fund that never sells, buying into a thin market, is not a passive observer. It's a participant.
Why this explains my model's mood swings
Now connect it back. The residual streaks I showed you last week — months where the estimate runs persistently above or below the survey — are, to a large degree, these premiums and discounts showing up in my inputs. When the trusts trade at a discount, my model sees cheap shares and concludes uranium is worth less than the surveys say. The disagreement isn't noise in the model. It's a real disagreement in the market, priced in real time.
Which is why the premium/discount gap is the next thing I want to track properly on the dashboard. It's on the roadmap; when it ships, you'll read about it here first.
The takeaway
When you look at the QL Spot Estimate, you're really reading the market's live vote on two warehouses full of uranium — one with a buying machine bolted to it, both with the exit welded shut. Understand the one-way door, and most of this market's strange behavior starts making sense.
— Maximilian