XXIvsMARA
Twenty One Capital vs Marathon Digital
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.
XXI
Twenty One Capital
🇺🇸 US
43,514 BTC
$2.8B market value
MARA
Marathon Digital
🇺🇸 US
35,303 BTC
$2.2B market value
Metric
XXI
MARA
BTC holdings
43,514 BTC
35,303 BTC
Market value of BTC
$2.8B
$2.2B
Average cost per BTC
$84,865.00
$68,236.16
Total cost basis
$3.7B
$2.4B
mNAV (market cap ÷ BTC value)
0.64×
2.06×
Sats per share
12.5k
9.3k
Last disclosed purchase
May 13, 2026
- May 13, 2026+-1 BTC$93.7K
- May 13, 2026+0 BTC$79.3K
- Mar 31, 2026+0 BTC$375.4M
- Mar 31, 2026+0 BTC$458.7M
- Mar 31, 2026+0 BTC$147.5M
XXI vs MARA: frequently asked
Which company holds more Bitcoin, XXI or MARA?▾
Twenty One Capital (XXI) holds 43,514 BTC, compared to Marathon Digital's (MARA) 35,303 BTC — roughly 1.2× more.
What's the total Bitcoin value on the balance sheets of XXI and MARA?▾
XXI holds $2.8B worth of Bitcoin at current market prices. MARA holds $2.2B.
Who has a lower cost basis per BTC, XXI or MARA?▾
XXI's average cost is $84,865.00 per BTC. MARA's is $68,236.16. MARA is the lower cost basis.
When did XXI last buy Bitcoin?▾
XXI disclosed a -1 BTC purchase on May 13, 2026.
When did MARA last buy Bitcoin?▾
MARA disclosed a -3,386 BTC purchase on May 11, 2026.