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Week ending October 3, 2025 · Sep 26 – Oct 3, 2025
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Treasury activity this week
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Bitcoin
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5,456 BTC |
$644.9M · 3 entities
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Ethereum
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5,051 ETH |
$21.3M · 4 entities
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Solana
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12,000 SOL |
$2.5M · 1 entity
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| Combined this week |
$668.6M
· 8 entities
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| Market |
BTC $78.8K+1.0% 7d
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F&G 47 · Neutral |
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Section 01
The Week
Eight companies added 22,507 tokens across three assets this week, with Metaplanet (TYO:3350) dominating the cohort via a 5,268 BTC purchase valued at $623.3 million on September 29th. Bitcoin filings totaled 5,456 BTC ($644.9 million) from three companies; ethereum saw 5,051 ETH ($21.3 million) from four filers including Fundamental Global (FGNX) at 3,447 ETH; and Phoenix Group PLC (PHX.AD) entered the SOL cohort with 12,000 SOL ($2.5 million). The week reflects continued institutional appetite across all three asset classes, with BTC up 0.95 percent on the period.
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Filings
Recent Purchases
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Section 02
Notable Filings
Metaplanet's 5,268 BTC filing on September 29th represents the largest single-week purchase by USD value in the dataset. Fundamental Global (FGNX) acquired 3,447 ETH on September 30th, signaling sustained ethereum adoption among corporate treasurers. Circle Internet Group (CRCL) added 21 ETH the same day. Block (XYZ) and Bullish (BLSH) each filed small BTC positions (88 BTC and 100 BTC respectively) on September 30th. Phoenix Group PLC's entry into solana custody with 12,000 SOL marks the first corporate SOL stacker in this week's data.
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Leaderboard
Top Five
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Section 03
One Chart
Ethereum filings this week came from four distinct companies acquiring across a $108,000 to $14.3 million range per filer, suggesting the ethereum treasury cohort remains fragmented by company size. In contrast, bitcoin filings concentrated heavily in Metaplanet's single $623.3 million purchase, which dwarfed Block and Bullish's combined $21.6 million in BTC adds. This divergence — ethereum spread across smaller allocations, bitcoin concentrated in one mega-filer — mirrors historical patterns in the broader institutional adoption curve.
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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.
15046 S. Rebellion Court, Bluffdale, UT 84065.
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