MicroStrategy (MSTR) bought more bitcoin (BTCUSD) last week, for the fifth week in a row.

The company spent roughly $2.1 billion to add 21,550 bitcoins to its stash that has now grown to 423,650 BTC, and is worth close to $41.5 billion at current prices. MicroStrategy now controls over 2% of the 21 million bitcoin that will ever exist.

According to regulatory filings, the purchase was funded through a $2.13 billion share sale which is a part of MicroStrategy's $42 billion plan to purchase bitcoin by issuing shares and convertible note offerings.

The acquisition of this latest horde of bitcoin came at an average price of $98,783 per bitcoin for MicroStrategy, as bitcoin prices have rallied from below $70,000 to more than $100,000 since the re-election of Donald Trump and hopes of a more crypto-friendly administration.

Despite the newly-announced bitcoin purchase, MicroStrategy stock was down roughly 4% in recent trading Monday, as bitcoin dipped below the $98,000 level.

Many other listed companies are taking a leaf out of MicroStrategy's bitcoin playbook to add the cryptocurrency to their own books. Bitcoin miner Riot Platforms (RIOT) also unveiled a $500 million convertible bond offering Monday to buy more bitcoin. Previously, Marathon Holdings (MARA) and Semler Scientifc (SMLR) announced their intention to acquire more bitcoin.