MSCI Confirms Metaplanet's Removal From Japan Small Cap Index

MSCI will remove Metaplanet (3350.T) from its Japan Small Cap Index after the Nov. 30 close, the index provider confirmed, setting a firm date for a benchmark change that hits Japan's best-known Bitcoin treasury company.

The decision rests on price data from Oct. 20. Metaplanet is the sole deletion in Japan's portion of MSCI's November global small-cap review. That review adds 14 companies to the Japanese index and removes one. The asymmetry tells its own story: this is not a routine rebalancing churn, it's a targeted exclusion under a new rule.

The rule matters here. In October, MSCI adopted a fresh policy aimed at non-operating companies. The policy assesses whether a company holds substantive operating assets and applies five financial-ratio tests. A company that fails four of those tests loses index eligibility. Metaplanet's removal runs through that framework, as part of the November review conducted under the new policy.

What does this change for Bitcoin treasury firms?

In practice, it narrows their access to passive capital. Index membership channels flows from funds and ETFs that track MSCI benchmarks. Deletion after the Nov. 30 close means index-tracking portfolios must sell or trim their holdings. For a company whose equity story leans on institutional visibility, losing a benchmark slot is an operational setback, not a cosmetic one.

The policy also redraws the boundary between operating businesses and asset-holding vehicles. Firms that exist mainly to hold a treasury asset, rather than run substantive operations, now face a defined test. Five ratios. Fail four, and you're out. That's a structural shift in how index providers treat the corporate-treasury model that Bitcoin advocates popularized.

A two-market sweep

Metaplanet isn't alone. MSCI's November review also removes Strategy from MSCI USA. That removal had been delayed before — MSCI postponed it in January while freezing increases to Strategy's index share count. The freeze capped how much of the company's expanding share base could flow into the benchmark. Now the postponement is over.

The November review, then, clears both Bitcoin treasury companies from their respective benchmarks in one scheduled pass. One in Tokyo. One in New York. Same month, same underlying policy logic.

For Metaplanet, the clock runs to Nov. 30. The change takes effect after that close, based on Oct. 20 pricing already locked in. After that, the company trades outside the small-cap benchmark that helped anchor its institutional following — and other treasury-style firms will be watching how MSCI applies its five-ratio test in future reviews.