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Oct 3 – Oct 9, 2025
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Treasury activity this week
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787 BTC |
$43.1M
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2,826 ETH |
$13.3M
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| Combined this week |
$56.4M
· 5 entities
-33% vs last week
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| Last week: $83.6M · 8 entities |
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| Market |
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BTC |
$65.6K+6.4% 7d |
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F&G 22 · Extreme Fear |
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ETH |
$1.8K+9.3% 7d |
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F&G 47 · Neutral |
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SOL |
$73+13.1% 7d |
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F&G 52 · Neutral |
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The big picture
The Week
ZOOZ Strategy acquired 329 BTC ($40.0M), the week's largest purchase, in a filing dated October 6th. Corporate treasury activity remained modest across all three assets: 787 BTC ($43.1M), 2,826 ETH ($13.3M), and no SOL purchases this week. Five distinct companies filed, with Marathon Digital accounting for 373 BTC (production-related, no USD figure disclosed) and Def Consulting entering as a new Ethereum buyer with 2,826 ETH ($13.3M) on October 7th. No net selling occurred.
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Filings
Recent Purchases
~ Estimated value — the filing disclosed how many coins changed hands but no dollar figure, so we value it at the market price.
See filings as they land →
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Worth reading
Notable Filings
BitMine Immersion Technologies disclosed a cumulative ETH position of 2,830,151 ETH, up 179,251 ETH ($840.1M) since its last disclosure — a multi-period accumulation that far exceeds this week's discrete purchases. ZOOZ Strategy's $40M BTC acquisition (8-K filed via SEC) represents the week's most material single trade. The Smarter Web Company PLC (SWC.L) added 25 BTC ($3.1M) on October 7th via London RNS announcement, while Def Consulting's ETH purchase marks the week's only non-Bitcoin activity among discrete filings. Marathon Digital's 373 BTC figure came from a production update rather than a declared treasury purchase.
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Period-end balances
Disclosed This Week
These companies revealed their total balance-sheet position in a filing this week. The change shown is cumulative since each company's last disclosure — a multi-quarter figure, not a purchase made this week.
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Leaderboard
Top Five
The largest tracked holders overall — companies, funds, and governments — ranked by total position, not by this week's activity.
Full leaderboard →
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The breakdown
This Week by Asset
| Asset |
This week's activity |
Net USD · share |
 BTC
4 entities
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$43.1M
76.5%
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 ETH
1 entity
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$13.3M
23.5%
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ETH corporate buying posted its strongest week in months with Def Consulting's 2,826 ETH entry and BitMine's disclosed balance jump of 179,251 ETH. The latter dwarfs all BTC purchases combined on a USD basis ($840.1M), signaling that Ethereum treasury adoption — when it moves — moves in structural tranches rather than weekly increments. BTC remains the dominant activity cohort by filing frequency, but the magnitude of Ethereum's multi-period disclosure suggests uneven but meaningful corporate positioning in Layer 1 alternatives.
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You're reading Treasuries Weekly
— a briefing on corporate BTC, ETH, and SOL balance-sheet adoption from CorpStacking.
Editorial is not investment advice. Data sourced from SEC EDGAR, CoinGecko, and primary corporate filings.
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© 2026 J & M Sorce Holdings, LLC, d/b/a CorpStacking.
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