Digital asset advocacy group Bitcoin For Corporations (BFC) has questioned JPX Market Innovation & Research’s recent move of capping crypto firm listings, marking a growing policy dispute over Japan’s index governance framework.
According to a report shared with CoinHeadlines, BFC has urged JPX Market Innovation & Research to withdraw a proposed rule that would block companies whose primary assets are crypto from being newly added to the TOPIX and other major Japanese equity indices.
The proposal, outlined in JPXI’s April 3, 2026 consultation, does not set a fixed numerical threshold for exclusion. Instead, it suggests that firms whose “principal asset is cryptoassets” would be temporarily deferred from new index inclusion.
Furthermore, those constituents currently on the index will not be affected, making them automatically grandfathered into the benchmark. Also, the proposed measure is stated to operate “for the time being” without any clear ending period or review process.
BFC says proposal “not a true investability rule”
BFC argues that the proposal goes beyond traditional index methodology and challenges the neutrality of Japan’s flagship equity benchmark.
According to the group, TOPIX already relies on established investability filters such as liquidity requirements, free-float adjusted market capitalization, continuation buffers, and listing-quality criteria. These, it says, are designed to ensure stability and replicability in index composition.
In contrast, BFC claims the crypto-asset exclusion introduces a balance sheet-based filter, rather than one grounded in market behaviour.
Speaking on behalf of the group, Managing Director George Mekhail (BFC) said TOPIX should remain a neutral reflection of the Japanese equity market.
“TOPIX is meant to be a broad, neutral, investable benchmark,” Mekhail said. “If a company meets standard market-based eligibility rules, excluding it purely due to one asset category is not a normal investability screen. It becomes a policy judgment, not an index methodology decision.”
BFC outlines four main concerns with the proposal
In its report, BFC has proposed four major problems with the new listing parameters. First, it argues the exclusion is not a true investability rule because it does not evaluate liquidity, free float, or market capitalisation. Instead, it introduces an asset-type restriction that deviates from standard index construction principles.
Second, the working group points out the definitional uncertainty. The consultation process fails to provide guidelines on how the term “the principal asset is cryptoassets” will be defined for practical purposes.
There is no indication whether the evaluation will be made by taking into account the accounts of the parent company only, or through consolidation, or through the subsidiary companies and affiliated firms.
Third, BFC warns the rule could encourage structural arbitrage, where companies reorganise holdings or use subsidiaries to avoid classification, rather than reflecting real economic exposure. In its view, this would reduce transparency without improving index quality.
Fourth, the group criticises the proposal as premature and open-ended. Japan’s updated TOPIX framework, which will allow Standard and Growth market companies to enter under revised rules starting in 2026, has not yet been fully implemented. Introducing an exclusion ahead of that system, BFC argues, risks creating inconsistency. It also notes the absence of a sunset clause, review timeline, or exit criteria, which it says undermines policy discipline.
Comparison to other indexes
In its report, BFC has also pointed to global index providers as a comparison to access the flaws in the TOPIX rules. It noted that MSCI Inc. previously considered but did not implement a blanket exclusion for digital-asset treasury companies, instead opting for further classification analysis.
Similarly, FTSE Russell has not introduced a comparable rule. BFC argues that JPX should adopt a similarly cautious approach.
More broadly, the group says the issue goes beyond crypto exposure and raises questions about benchmark neutrality. It warns that introducing asset-specific exclusions could weaken the credibility and global comparability of TOPIX as a leading equity index.
“If there is a broader concern about highly concentrated balance sheets, that should be addressed through an asset-neutral framework applied consistently,” Mekhail said. “What should be avoided is a rule that targets one asset class, is difficult to administer, and is disconnected from investability standards.”
BFC officially appealed to JPX to recall the proposal, keep TOPIX a rules-based index, prevent endless deferrals without proper governance, and consult the markets before introducing any modifications to the index method.
The response to the consultation will be very important, as it may determine how other index providers around the world deal with crypto-exposed companies and how digital assets-loaded balance sheets will be treated in traditional stock indexes.