According to the source, an X post dated Sep 17, 2025 reports that Metaplanet plans to invest $1.25B in BTC by October and allocate $139M to its Bitcoin Income Generation arm; source: X post, Sep 17, 2025. For trading, the stated timeline suggests potential staged execution into end-October, so market participants can monitor BTC spot volumes, order-book imbalance, and futures basis during Asia hours for accumulation footprints; source: X post, Sep 17, 2025. Because the post provides no accompanying documentation, independent confirmation via Metaplanet investor relations or exchange disclosures is advisable before positioning, to validate scale and timing; source: X post, Sep 17, 2025.