| Date | Source | USD | Sentiment | |||
|---|---|---|---|---|---|---|
Massachusetts Mutual vs Metaplanet
Side-by-side Bitcoin treasury comparison: holdings, market cap, mNAV ratio, BTC per share, cost basis, and recent purchases. Numbers refresh every 5 minutes from SEC filings and live market data.


Metaplanet (TYO:3350) holds 43,000 BTC, compared to Massachusetts Mutual's (BTC-MASSACHUSETTS-MU) 3,500 BTC — roughly 12.3× more.
BTC-MASSACHUSETTS-MU holds $225.7M worth of Bitcoin at current market prices. TYO:3350 holds $2.8B.
BTC-MASSACHUSETTS-MU's average cost is $81,348.00 per BTC. TYO:3350's is $95,209.00. BTC-MASSACHUSETTS-MU is the lower cost basis.
BTC-MASSACHUSETTS-MU's last BTC purchase isn't in our tracked history yet.
TYO:3350 disclosed a 5,075 BTC purchase on April 2, 2026.