Futures-Backed Bitcoin futures have demonstrated themself a dramatically successful product, even if they have some very peculiar drawback that makes them a subpar instrument compared to cash backed Bitcoin ETF’s, which, for the moment, aren’t allowed (or going to be allowed) by the regulator.
The First Futures Bitcoin futures blacked ETF to launch has been Proshares’ Bitcoin Strategy ETF (BITO), which managed to hoard more than 1 Bln Assets Under Management in less than three days: the fastest ETF to reach this threshold.
Let's analyze how it works.
BITCOIN STRATEGY ETF
Website Prospectus Factsheet:
Here there is the Fund-s factsheet, describing his mean features:
https://www.proshares.com/media/fact_sheet/ProSharesFactSheetBITO.pdf?param=1637843142072 From these few lines we can highlight the main feature of the fund:
The fund seeks capital appreciation
This vague statement is quite different from what you would find on a standard ETF term sheet. Those documents usually report something like:
Something like:
The Fund ProShares X seeks investment results, before fees and expenses, that track the performance of the X Index.
This means they adopt a purely passive approach (bar a very few highly specialized actively managed ETF’s).
The fact that they don’t clearly state this “track” statement in the objective fund is indicative of the fact that they surrendered to the fact that tracking is quite a difficult objective to achieve, even before fees and expenses. The fund holds exposure to Bitcoin futures contracts only
The fund invests in Bitcoin futures to hedge their exposure to Bitcoin. They have the theoretical possibility to use other instruments, like equities of other instruments, but this is on a last-resort basis. Using futures instead of the underlying spot bitcoin means that the position must be actively managed, to say the least, roll the position each future expiry. This has implications on the expenses of the fund, as we will see. The fund doesn’t invest directly in Bitcoin
The future is not allowed, due to regulatory constraints, to directly invest in “physical” bitcoins. As the future is cash-settled, even if they somehow take delivery of the future, they will never end up with physical bitcoins in their portfolio.
ETF Basics: Shares issuance/Destruction
Bitcoin ETFs trading is facilitated by Market Makers, subjects that provide the market with liquidity, or continuously updated prices and quantities for the investors to buy and sell the ETF. When an investor wants to buy an ETF share, will put in competition the prices of the various market makers on the exchange. Each market Makers continuously quote a pair of bid/offer prices for the ETF, that will be provided according to their peculiar models regarding underlying price and liquidity, willingness to reduce their inventory, and any possible other price-sensitive factors. When an investor decides to buy an ETF share and trade with the best pricing market maker, he will transfer the cash to the market maker, that in return will transfer the ETF in case of a buy (vice versa in case of a sell, the investor will transfer the ETF share against the cash). This simplified version of the trade requires the share already being issued and in possession of the market makers, to be transferred to the buyer through the exchange. In the event this is not the case, the market maker will have to go to the ETF issuer in order to obtain a new ETF share, against the corresponding cash amount. This process is called “share creation” or “share issuance”, and happens when the number of shares bought exceeds the available shares sold. Of course, the opposite phenomenon can happen, and it is called “shares destruction”. Please note that this creation/destruction process always happens “in-kind”, or against cash, not against futures as market makers transfer cash to the ETF issuers rather than futures.
As the share creation/redemption process is not instantaneous, or actually is quite slow, each market maker will maintain a certain quantity of shares in their account, maybe also hedging their value against the underlying market, in order to timely provide liquidity to the market. Looking at shares creation/destruction we can have a precise idea of funds flowing into and out an ETF, as the AUM is a misleading guide, as it can grow bigger without new fund inflow, being influenced by the underlying price dynamics (something like GBTC reaching record AUM without new subscribers being fund’s subscriptions being closed since the beginning of this year).
Future Backed ETF. How they Work
The main Feature of Bitcoin ETFs approved by SEC so far, is the fact that they track the future underlying price, or the CME reference Index in case of BITO. According to the SEC, approving ETFs under the 1940 Act, limiting approval only to future based ETFs means more protections for investors. Also, in their opinion, this is the only possible approval, as the fact that Bitcoin isn’t a security, makes it impossible for them to approve a physical bitcoin ETF under the less stringent 1933 act.
As the ETF has to replicate an index tied to CME futures market, the most effective way to do so is to buy the Futures quoted on that index, with a specific ratio in order to match the exposure given by the shares.
The problem is there is a huge cost in this kind of strategy. While the underlying index is continuous, futures have a designed maturity, and when this maturity nears, the issuer has to roll their exposure to the next expiry month. Rolling the exposure means selling the front month (the future with shorter expiry) to buy a longer maturity one (back month future). The price difference between the two contracts is actually a transaction cost.
In particular, given the peculiar microstructure of the Bitcoin market, the future price structure is upward sloping. Something called contango, as we explained in the thread:
Everything you wanted to know about BTC futures but were afraid to ask! | |
| Fig.1. The Bitcoin Future Curve exhibits a steep contango. This has been true since its inception. |
Each dot in the above graph, bar the one in the left which is the current spot level, represents a future expiry: as you can see going further on longer maturities the price increases. Just remember this has
nothing to do with the expected future price of bitcoin, but it's something intrinsically determined by the market microstructure, as explained in my Future thread: future prices are not an unbiased prediction of the future spot market.
Being the future curve in contango, this means that every time the issuer rolls the position to longer futures, he has to sell the shorter, lower priced future, to buy the longer, higher-priced future. The whole operation imposes a loss, that will be passed to the investor, as a reduction to the NAV.
This cost is not constant, but depends on the shape of the futures curve structure being higher with steeper curves, and lower with flatter curves.
Since the launch of the ETF we have seen the future curve move quite a lot, as we can appreciate from this graph:
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| Fig.2. Contango curve has been quite traded since ETF inception, and reached its' maximum on the same date of the future roll.
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