Marathon Digital (MARA) vs Twenty One Capital (XXI)
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.
M
Marathon Digital
MARA · US
38,689
$3.0B market value
X
Twenty One Capital
XXI · US
43,514
$3.4B market value
Metric
MARA
XXI
BTC holdings
38,689
43,514
Market value of BTC
$3.0B
$3.4B
Average cost per BTC
$70,069.00
—
Total cost basis
$5.9B
—
mNAV (market cap ÷ BTC value)
1.66×
1.47×
Sats per share
10.2k
12.6k
Last disclosed purchase
3/2/2026
—
Country
🇺🇸 US
🇺🇸 US
- 3/2/2026+860$150.0M
- 11/4/2025+860$20.9M
- 4/3/2025+1,226$103.0M
- 3/10/2025+715$62.5M
- 2/3/2025+766$74.9M
No tracked purchases yet
MARA vs XXI: frequently asked
Which company holds more Bitcoin, MARA or XXI?▾
Twenty One Capital (XXI) holds 43,514 BTC, compared to Marathon Digital's (MARA) 38,689 BTC.
What's the total Bitcoin value on the balance sheets of MARA and XXI?▾
MARA holds $3.0B worth of Bitcoin at current market prices. XXI holds $3.4B.
Who has a lower cost basis per Bitcoin, MARA or XXI?▾
Cost basis disclosure is inconsistent across these two entities; check each company's detail page for per-purchase history.
When did MARA last buy Bitcoin?▾
MARA disclosed a 860 BTC purchase on March 2, 2026.
When did XXI last buy Bitcoin?▾
XXI's last BTC purchase isn't in our tracked history yet.