Metaplanet’s October TOPIX entry at risk? Inside JPX’s crypto crackdown

Japan Alternate Group (JPX) is mulling blocking corporations that park over 50% of their belongings in crypto, reigniting fears for Metaplanet and different digital asset treasuries (DATs). 

In keeping with the native writer Nikkei, the proposed tips would block new crypto treasuries that fall within the mentioned class. Moreover, these already listed on JPX’s Tokyo Inventory Value Index (TOPIX) can be axed if the proposal is adopted. 

Reportedly, JPX has sought suggestions from stakeholders on the identical. The transfer may complicate the scheduled itemizing of Metaplanet on TOPIX after the October 2026 reconstitution. 

In October 2025, Metaplanet was upgraded from small-cap to mid-cap, which prompted its itemizing on the FTSE Japan Index and the FTSE All-World Index. The improve provided extra institutional publicity for Metaplanet (3350) inventory. 

Nonetheless, the JPX’s exclusion may set off passive outflows from indices and home buyers that use TOPIX as a benchmark for Metaplanet.  

Considerations about Metaplanet and different crypto treasuries

However the crackdown didn’t begin this yr, although. 

Final November, JPX informed Bloomberg that it was contemplating new tips to guard buyers amid wild market volatility. At the moment, Metaplanet inventory had fallen 75% after surging over 400% earlier in 2025. A JPX spokesperson mentioned, 

We’re monitoring firms that elevate issues from a threat and governance perspective, with a view to defending shareholders and buyers.

To JPX, crypto-linked volatility was hurting inventory buyers and needed to be reined in. It proposed harder merger guidelines and audits to curb these worth swings. And the exclusion proposal provides to JPX’s strict stance on the section. 

Will Metaplanet inventory be affected?

For perspective, the MSCI Index floated related proposals, which triggered Technique’s MSTR sell-off in late 2025 and early 2026. Analysts feared that axing it will result in passive outflows of about $3B-$9B if different indices adopted go well with. 

By the point MSCI dropped the plans in early January, MSTR had fallen 60% from $365 to $147. Market watchers anticipated Metaplanet to foyer towards the proposed rule like Technique did to the MSCI Index plan. 

It’s unclear whether or not Metaplanet, the world’s third-largest BTC treasury agency, will persuade JPX to drop its strict guidelines. The agency’s Tokyo Inventory Alternate-listed inventory (3350) closed the session on the third of April at $1.87. It was down 86% from the 2025 highs of $13.3. 

Remaining Abstract

• Japan Alternate Group needs public corporations with heavy crypto publicity to be banned from the Tokyo Inventory Value Index (TOPIX)
• The plan may block Metaplanet’s anticipated October 2026 itemizing on the index and set off extra sell-off.