Franklin Templeton’s proposed Franklin DATCO Index ETF reached the September 11 effective date specified in its most recent regulatory amendment, bringing to an end — at least at the registration stage — a lengthy sequence of postponements for an exchange-traded fund designed to track publicly listed companies holding significant amounts of digital assets on their balance sheets.

The Franklin Templeton ETF Trust filed Post-Effective Amendment No. 158 with the U.S. Securities and Exchange Commission on August 12. The filing explicitly designated September 11, 2026 as the new effective date for Post-Effective Amendment No. 129, the original registration document covering the Franklin DATCO Index ETF. No later postponement was identified in the filing sequence reviewed for this report.

The regulatory milestone is important because the product occupies a relatively new segment of the ETF market. Rather than owning bitcoin, ether, solana or another cryptocurrency directly, the proposed fund is structured as an equity index ETF. Its targeted holdings are shares of companies whose corporate treasury strategies give them meaningful exposure to digital assets.

That distinction makes the Franklin DATCO Index ETF fundamentally different from spot cryptocurrency ETFs. A spot bitcoin ETF is designed primarily to reflect movements in bitcoin through direct or economically similar exposure to the asset. Franklin’s DATCO concept instead targets operating companies, meaning investors would be exposed not only to changes in cryptocurrency prices but also to corporate financing decisions, equity valuations, management execution, capital structure, operating businesses and broader stock-market conditions.

The registration process began on November 18, 2025, when Franklin Templeton ETF Trust filed Post-Effective Amendment No. 129 on Form N-1A. The preliminary prospectus said the fund would seek investment results that closely correspond, before fees and expenses, to the performance of the FTSE Developed Digital Asset Treasuries Index.

The filing did not proceed directly to effectiveness. Franklin subsequently used Form 485BXT amendments under Rule 485(b)(1)(iii) of the Securities Act to designate a succession of new effective dates. A January 28 filing moved the date to February 17. A February 13 amendment designated March 17, while subsequent filings shifted the timetable to March 27 and then April 22.

The sequence continued through the spring and summer. Franklin designated May 20 as the next date, followed by June 18, July 18 and August 14. Its August 12 amendment then moved the registration to September 11. In total, the filing history shows a product whose effective date was repeatedly deferred over a period spanning most of 2026.

Form 485BXT filings of this type can be used to designate a new effective date for an earlier post-effective amendment. Franklin’s August document said its sole purpose was to establish September 11 as the effective date for the November 2025 registration amendment, while incorporating the fund’s prospectus and statement of additional information from that earlier filing by reference.

For ETF investors, however, an effective registration statement should not automatically be interpreted as evidence that shares are already available for trading. The regulatory effectiveness of a registration document and the commercial launch of an ETF are related but distinct events. Exchange listing arrangements, final prospectus documentation, ticker assignment, seed capital, creation-unit activity and market-maker readiness can all be relevant to the point at which investors can actually buy and sell a new ETF in the secondary market.

That distinction is particularly relevant in this case because Franklin’s November 2025 preliminary prospectus still displayed blank fields for the ETF’s ticker symbol and exchange. Several other figures in the preliminary document were shown in brackets. The draft, for example, presented a bracketed management fee of 0.49%, meaning investors should look to final effective prospectus materials rather than assume every preliminary term remained unchanged by the time the product reached commercialization.

The investment strategy described in the registration documents is nevertheless unusually detailed. Under normal market conditions, Franklin said the ETF would invest at least 80% of its assets in securities making up the FTSE Developed Digital Asset Treasuries Index and in depositary receipts representing those securities. Derivatives providing similar economic exposure could also count toward the 80% policy.

FTSE Russell is identified as the organization responsible for creating, calculating, maintaining and publishing the underlying index. The benchmark is built from the FTSE Global Equity Index Series and applies additional screens intended to identify companies in developed markets with significant digital-asset treasury positions.

The preliminary methodology established a central quantitative test: eligible companies generally needed the value of qualifying digital assets on their balance sheets to equal at least 25% of their equity market capitalization. The draft methodology identified bitcoin, ether and solana as qualifying assets at the time the registration document was prepared, while allowing the eligible asset list to evolve as market relevance and adoption changed.

Additional size and liquidity screens were also contemplated. The preliminary filing said eligible companies needed a total market capitalization of at least $150 million. It also described minimum treasury holdings of $3 million in bitcoin or $1.5 million in either ether or solana, alongside public-float, trading-volume and liquidity requirements.

The index methodology divides eligible companies into two categories. “Core DATCOs” are companies whose strategic identity and business model center on accumulating and managing digital assets as a treasury function. “Related DATCOs” can meet the benchmark’s quantitative requirements without making digital-asset accumulation the defining focus of their corporate strategy.

The index was designed to target an allocation of about 80% to Core DATCOs and 20% to Related DATCOs, although actual weights can fluctuate. That structure attempts to maintain substantial exposure to companies explicitly pursuing digital-asset treasury strategies while retaining a smaller allocation to businesses with significant qualifying holdings but a less central treasury focus.

The benchmark is scheduled for quarterly reconstitution. At those reviews, digital-asset holdings are measured using updated asset prices and compared with the relevant companies’ current equity market capitalization. Constituents are then weighted by market capitalization, subject to concentration controls based on FTSE Russell’s regulated investment company capping methodology.

According to the preliminary prospectus, the capping system was designed so that no single constituent would exceed 22.5% of index weight and the combined weight of constituents individually exceeding 4.5% would remain within a 45% limit. Those constraints are significant for an investment universe that could otherwise become heavily dominated by a small number of companies with exceptionally large digital-asset positions or market capitalizations.

The methodology also included a buffer for existing constituents. A company meeting the initial 25% digital-asset-to-market-capitalization threshold could remain in the benchmark unless its ratio dropped below 15%, at which point it could be removed at the next quarterly review. Such buffers are commonly used in indexes to reduce excessive turnover around eligibility thresholds.

Franklin said the ETF could follow either a replication or representative-sampling approach. Under replication, the fund would seek to hold the index constituents in approximately their benchmark weights. If exact replication were impractical, the manager could instead assemble a portfolio intended to resemble the index in characteristics including market capitalization, industry exposure, risk factors and expected performance behavior.

The fund’s proposed structure therefore adds another layer between cryptocurrency markets and the ETF shareholder. Digital-asset prices influence the value of corporate treasury holdings; those holdings can influence the equity valuations of index constituents; index methodology determines which companies qualify and at what weights; and Franklin’s portfolio-construction process then seeks to track that benchmark. The result can behave differently from direct cryptocurrency exposure even when digital-asset prices are the primary market narrative.

The preliminary prospectus explicitly highlighted the distinctive risks of digital-asset treasury companies. Franklin noted that the business model is relatively new and that its long-term sustainability remains uncertain. It also warned of potentially procyclical behavior, with treasury companies purchasing more digital assets during rising markets while becoming pressured to sell during downturns.

Such dynamics could amplify volatility. A company that raises equity or debt to acquire additional cryptocurrency may see its shares trade at a premium to the underlying value of its treasury assets during bullish periods. If that premium contracts, financing conditions deteriorate or digital-asset prices fall sharply, shareholders can experience losses driven by both the cryptocurrency market and the company-specific capital structure.

The proposed ETF is also designated as non-diversified, allowing it to hold larger exposures to individual issuers than a diversified investment company might carry. The fund said it would concentrate in an industry or group of industries to approximately the same extent as its underlying benchmark. In the preliminary filing, the index was described as concentrated in the software industry at the referenced measurement date.

Other traditional ETF risks remain relevant. An index fund can experience tracking error because of fees, transaction costs, portfolio sampling, corporate actions, cash holdings, taxation, timing differences or market disruptions. Newly launched ETFs can also face wider bid-ask spreads or limited liquidity until trading volume and assets under management become established.

The DATCO structure adds foreign-market considerations as well. The preliminary index included developed-market companies and was not limited exclusively to the United States. Foreign securities can introduce currency, settlement, disclosure, market-structure and political risks alongside the cryptocurrency-linked exposure generated by the companies’ treasury holdings.

For Franklin Templeton, the proposed vehicle expands the boundaries of passive digital-asset investing without requiring the fund itself to hold cryptocurrencies directly. The approach allows an established ETF platform to target a theme that increasingly sits at the intersection of corporate finance, public equities and digital assets.

It could also offer investors a distinct allocation tool. Investors who already have direct exposure to bitcoin or spot cryptocurrency ETFs may view digital-asset treasury equities as a different risk factor because corporate shares can display operational leverage and valuation premiums or discounts relative to the assets held on balance sheets. Conversely, investors seeking straightforward cryptocurrency tracking may find DATCO equities introduce additional variables that make returns less predictable relative to the underlying tokens.

The index-based construction is therefore central to the fund’s investment case. Instead of requiring investors to identify individual treasury companies and continuously evaluate changing cryptocurrency holdings, market capitalizations and financing activity, the ETF is intended to apply a systematic eligibility and weighting framework through the FTSE benchmark.

The September 11 registration milestone does not resolve every question around the product. Investors will still need final documentation establishing the operative expense ratio, ticker, listing venue, creation-unit specifications and other commercial terms. They will also need information on the benchmark’s current constituents, because the preliminary prospectus relied partly on index data measured in 2025 and the strategy is designed for quarterly reconstitution.

Those final details will determine how the ETF competes within an increasingly specialized market for cryptocurrency-related investment products. Expense levels, liquidity and concentration will be especially important because investors can already obtain digital-asset exposure through spot cryptocurrency ETFs, individual treasury-company stocks, crypto miners, exchanges and broader blockchain-themed equity funds.

Still, reaching the designated effective date represents a material procedural milestone after the extended run of postponements. Franklin’s filing history shows the issuer keeping the DATCO strategy alive through repeated monthly extensions rather than withdrawing the product. The September 11 date now shifts attention away from the registration timetable and toward whether Franklin converts that regulatory readiness into an actively traded ETF.

For the ETF market, the larger significance lies in the emergence of digital-asset treasury companies as a sufficiently defined equity category to support a dedicated rules-based index product. If the Franklin DATCO Index ETF proceeds to trading, its assets, volumes and investor adoption will provide an early test of whether investors want packaged exposure to companies using cryptocurrency as a balance-sheet strategy, rather than simply owning the digital assets themselves.