| Date | Source | USD | Sentiment | |||
|---|---|---|---|---|---|---|
The Mempool Open Source Project 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 The Mempool Open Source Project's (BTC-MEMPOOL) 3,721 BTC — roughly 11.6× more.
BTC-MEMPOOL holds $237.9M worth of Bitcoin at current market prices. TYO:3350 holds $2.7B.
BTC-MEMPOOL's average cost is $34,404.59 per BTC. TYO:3350's is $95,209.00. BTC-MEMPOOL is the lower cost basis.
BTC-MEMPOOL disclosed a 0 BTC purchase on February 14, 2025.
TYO:3350 disclosed a 5,075 BTC purchase on April 2, 2026.