Metaplanet (3350) said it bought 780 more bitcoin (BTC), bringing its total holdings to 17,132 BTC valued about $2 billion at current prices.

The Tokyo-based company paid an average 17.5 million yen ($118,176) per coin, according to a Monday disclosure.

Metaplanet uses a metric, called BTC Yield, to track shareholder value in relation to dilution. The BTC Yield for July 1-July 28 is 22.5%, Metaplanet said.

For the quarter-ended June 30, BTC Yield was 129.4%, up from 95.6% in the preceding three months.

Since adopting a bitcoin treasury strategy based on that of Strategy’s (MSTR), Metaplanet has acquired 17,132 BTC, the largest holding among public companies outside the U.S, at an average price of $99,732 per coin.

Metaplanet shares rose 5% to close at 1,240 yen on Monday, outperforming the Nikkei 225 index, which fell 1.1%.