Brian Rudick is a senior strategist for GSR. Matt Kunke is a research analyst for GSR. This post is part of Consensus Magazine’s Trading Week, sponsored by CME.

Indeed, noted industry analysts now peg the chance of approval by early January to be 90%; Grayscale’s discount to net-asset value (NAV) has narrowed from 45% at the beginning of the year to 13% indicating a higher market-implied probability of approval/conversion, and bitcoin is up a resounding 110% year-to-date due at least in part to spot ETF hopes.

So what’s the big deal?

A U.S. spot bitcoin ETF is a massive opportunity because of the sheer size of the U.S. capital markets. In fact, SIFMA estimates that the U.S. accounts for a full 40% of total global fixed income assets and equity market cap. Moreover, ETFs in the U.S. represent a greater percentage of total assets than in other jurisdictions, coming in at 7% of equity and fixed income assets versus 4% in Europe and 2% in Asia-Pacific.

All in, that amounts to a $7.0 trillion U.S. ETF market, which is multiples the size of Europe’s $1.5 trillion market and Asia-Pacific’s $1.0 trillion market. Looked at another way, assets managed by broker dealers, banks, and RIAs in the U.S. total nearly $50 trillion, so it would take just a tiny percentage of managed and brokerage assets migrating into a spot bitcoin ETF to move the needle. And crypto adoption in the U.S. is high with the U.S. ranked fourth in Chainalysis’s Global Crypto Adoption Index, portending well for adoption translating into investment.

Another reason a U.S. spot bitcoin ETF is such a big deal is because of its advantages over other trading vehicles and the resulting increased likelihood of greater adoption. Relative to spot, futures, proxy stocks, OTC-traded trusts, and private funds, ETFs offer a unique and advantaged combination of fees/transaction costs, liquidity, tracking error, and operational complexity, not to mention alleviating the need to figure out custody.

And while several bitcoin futures ETFs have existed since late 2021, there are notable disadvantages to its futures-based construction such as tracking error, tax inefficiency, and roll costs that will typically lead to material underperformance over time, making them more appropriate for short-term trading than a buy-and-hold strategy that better capitalizes on the benefits bitcoin brings to a portfolio.

Put simply, a U.S. spot bitcoin ETF gives bitcoin legitimacy, eliminating regulatory uncertainty (many compliance departments currently don’t allow it), giving credence to crypto as an asset class, and ensuring strong oversight and investor protections, all in a convenient and familiar vehicle. Add in a potential offering from the likes of BlackRock, with its sterling reputation among advisors and distribution to nearly every major wealth platform, and it becomes easy to see why investment managers and advisors may suddenly take the leap.

While predictions around inflows and their resulting impact on price are notoriously difficult when dealing with a new asset class, the introduction of a spot ETF and its impact on the gold market is perhaps the best analogy. Indeed, like bitcoin, gold has a (relatively) fixed supply, and prior to the launch of the first spot ETF, the SPDR Gold Trust (GLD), by State Street Global Advisors in late 2004, it too was difficult to access by investors.

However, the SPDR Gold Trust reached $1 billion in assets in just three days, setting a record at the time, and today sits at roughly $55b. All in, gold ETFs hold over 3,200 tonnes of gold worth ~$200b and equate to 1.5% of the gold supply. And while the analogy isn’t perfect – it was harder to own gold prior to the introduction of an ETF than it is to own bitcoin now, bitcoin is significantly more volatile than gold so investors need less exposure to achieve the same potential return, and gold funds certainly benefited from the macroeconomic environment at the time – the price of gold has increased over 4x since the first spot gold ETF was introduced.

To boot (and liquidity issues aside), bitcoin will likely see a larger impact on price for each net new investment dollar it accrues than did gold, as bitcoin’s market cap is just 27% that of gold in 2004. A spot ETF transformed the gold market, and it just may do the same for bitcoin.

To be sure, there is still significant uncertainty around ultimate approval, not to mention the AUM that spot ETF products may garner, and the resulting impact on price. And whether due to relatively subdued sentiment compared to the bull markets of yesteryear, the run-up in price in anticipation of an approval or portended by the lackluster debut of ether futures ETFs, it’s entirely possible and perhaps probable that short-term inflows will disappoint.

However, given the size of the U.S. market, the superiority of a spot ETF product, and the impact spot ETFs had on gold, the world is perhaps at the precipice of a truly game-changing moment for bitcoin and digital assets as a whole.

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