WGMI: the purest miner fund in the market changed what it is

What changed, and when

Two dates matter. On 11 August 2026 the fund changed its investment strategy. On 18 August 2026 it was renamed from the Valkyrie Bitcoin Miners ETF to the CoinShares Bitcoin Mining and Digital Power ETF. The ticker did not change, the fee did not change, and if you were not reading fund notices you may not have noticed anything at all.

We want to be direct about this, because it is the reason the page exists: WGMI is no longer clean hashrate beta. If you bought it as a concentrated bet on bitcoin mining economics — hashprice, network difficulty, energy spreads, fleet efficiency — the thing you own now has a materially wider remit and can drift a long way from that thesis without breaching its own mandate. That is not a scandal and it was properly disclosed. It is simply a position that has to be underwritten again from scratch, on the new terms.

The new mandate

The fund now commits at least 80% of net assets to what it defines as Bitcoin Mining and Digital Power Companies. That definition covers a great deal more ground than the old one: hyperscale data centres, semiconductors used in AI and data-centre applications, power generation and energy infrastructure, and high-performance and quantum computing, alongside bitcoin miners themselves.

Consider how much of the investable universe that opens. A data-centre operator with no exposure to bitcoin whatsoever qualifies. So does a semiconductor company selling accelerators into AI training clusters. So does an independent power producer. The 80% test can be satisfied without the fund holding a single company whose revenue depends on the bitcoin price. Whether the manager will do that is another question — this is an actively managed fund and the answer sits with the portfolio managers rather than with an index rulebook — but the constraint that used to guarantee miner concentration is gone.

Not a one-off: MNRS too

This would be a footnote if it were a single manager repositioning a $230m fund. It is not. Grayscale's MNRS, the Grayscale Bitcoin Miners ETF, is expected to become the Grayscale AI Compute ETF around 15 September 2026. Two of the three dedicated US mining ETFs are repositioning inside a 30-day window.

That is a structural shift in what "bitcoin miner" means as an investable category rather than two independent product decisions. The logic is the same in both cases and it is not hard to follow. Miners spent years acquiring exactly the assets that AI compute is now short of: interconnection queue positions, long-dated power contracts, substations, cooling, and shells that can take dense racks. Selling compute to an AI customer on a multi-year contract pays better and more predictably than selling hashrate into a market where the reward halves on a schedule. So the companies converted, and the funds that own them followed.

For an investor the consequence is uncomfortable but clear: the pure-play mining category is thinning out just as the underlying businesses become harder to classify. Getting clean exposure to bitcoin mining economics through a listed US fund is meaningfully harder than it was in July 2026. We track what remains on the bitcoin mining ETF page.

Same buildings

The last published top ten

The most recent published top ten is dated 13 August 2026. Say the obvious thing about that date: it lands two days after the strategy change and five days before the rename, so it effectively shows the old portfolio rather than the new one. Treat it as a record of what the fund was, not a forecast of what it will hold.

Two features of that list are worth pulling out. First, concentration: the top ten came to 73.42% of the fund and the top three to roughly 39.8%. That is a genuinely concentrated portfolio, and with Cipher alone above 16%, single-name risk is a real component of the return rather than a theoretical one.

Second, and more interesting: no Coinbase, no Strategy, no Circle. Every other significant crypto equity fund holds at least one of those, and most hold all three. Their absence is exactly what made WGMI the purest miner exposure available — you were getting mining companies rather than a blend of exchanges, stablecoin issuers and corporate bitcoin treasuries wearing a mining label. That purity is the specific quality the new mandate puts at risk.

Miner funds hold companies, not coins

This point applies to every fund in the category and it is the one most often skated over. A mining ETF does not hold bitcoin. It holds equity in businesses whose profitability is levered to the bitcoin price, which is a completely different risk profile.

The operating leverage is real and it cuts both ways. A miner's revenue moves with the bitcoin price while much of its cost base — power contracts, debt service, staff, depreciation on machines already bought — does not. So a 30% rise in bitcoin can produce a far larger swing in expected earnings, and the equity often responds accordingly. That amplification is the whole attraction, and in bull markets it delivers.

Then there is everything bitcoin itself does not have. Energy costs, which vary by site and by contract and can move against a miner without warning. Hashprice compression, the steady squeeze as global hashrate grows and each unit of computing power earns less. Equity dilution, which in this sector has been persistent — miners fund machine purchases by issuing shares, and holders are diluted whether or not the strategy works. Execution and management quality, which varies enormously across the peer group. And in most bitcoin drawdowns, miners fall harder than bitcoin does, because the leverage that flatters them on the way up compounds against them on the way down.

None of that makes miner equity a bad investment. It makes it a different investment, and one that should not be substituted for bitcoin exposure in a portfolio. If bitcoin price exposure is the goal, a spot fund such as IBIT or FBTC does the job directly, and the broader trade-off is set out in fund versus coin. The risk categories in play across all of these sit in our risk guide.

BKCH, BITQ and LEGR compared

If the mandate change has you reassessing, three funds mark out the range of what else is available, and they differ mainly in how much non-crypto business you end up owning.

Global X's BKCH charges 0.50%, the cheapest of the group, and offers the purest crypto beta of the diversified equity funds — but it is also the most top-heavy, and its concentration sits in exchanges and treasury companies rather than in miners. Bitwise's BITQ charges 0.85% and is the only major fund with a double-digit weight in Strategy, which makes it as much a bet on one company's balance sheet as on the industry. First Trust's LEGR sits at the far end of the spectrum: not one crypto-native company appears in its top ten, which is a legitimate blockchain-adoption thesis but is not crypto exposure in any sense a buyer would recognise.

Ranked by how diluted the crypto exposure is, that is roughly the order: dedicated miners at one end, then crypto-native financials mixed with miners, then broad blockchain-adjacent holdings, then a fund that is functionally a global technology and financials portfolio. WGMI used to sit unambiguously at the concentrated end. Where it sits after the mandate change is the open question. The full ranking is on the mining and crypto equity page, and all of these funds appear in the crypto ETF directory.

Who this now suits

WGMI makes sense for an investor who wants active exposure to the convergence of bitcoin mining and AI compute infrastructure, and who is comfortable that a portfolio manager rather than an index decides the balance between the two. There is a real thesis there. The companies that own scarce power and data-centre capacity are in a genuinely strong position regardless of which buyer pays more for it, and 0.75% for active management of that theme is not expensive.

It no longer suits an investor who wants concentrated, identifiable bitcoin mining exposure and nothing else, because that guarantee has been withdrawn. And it does not suit anyone using it as a proxy for bitcoin — it never did, but the case is weaker now that the portfolio can drift further from the coin. For those buyers, the funds on the spot Bitcoin ETF list, the cost comparison on fees, our picks across the crypto asset classes and the mechanics in how to buy a Bitcoin ETF are the better starting points.