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May 15 – May 21, 2026
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Treasury activity this week
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25,085 BTC |
$2.0B
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-224 ETH |
Value pending
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6,410 SOL |
Value pending
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| Combined this week |
$2.0B
· 6 entities
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| Last week: -$18.1M · 16 entities |
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| Market |
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BTC |
$65.7K+6.5% 7d |
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F&G 23 · Extreme Fear |
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ETH |
$1.8K+8.8% 7d |
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F&G 50 · Neutral |
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SOL |
$74+13.4% 7d |
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F&G 53 · Neutral |
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The big picture
The Week
Strategy (MSTR) acquired 24,869 BTC ($2.0B), dominating a week that saw $2.0B in total corporate treasury activity across six filers. The purchase, disclosed in a May 4 SEC filing, arrived as BTC rallied 6.5 percent over the seven-day period. Smaller buys came from The Smarter Web Company (29 BTC, $2.3M combined across two purchases) and Capital B (192 BTC). Solana Company added 6,410 SOL in an SEC filing. On the sell side, OneMedNet reduced BTC holdings by 5 BTC ($354.0K), and Gemini Space Station trimmed 224 ETH — minor disposals in a BTC-dominated week.
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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
Strategy's 24,869 BTC purchase at an average $80,985 per coin marks the firm's continued accumulation after a 14-week streak. The filing (May 18, SEC filing) shows disciplined acquisition during volatility. BitMine Immersion Technologies disclosed a cumulative position of 5,278,462 ETH (up 98,331 ETH since last disclosure, $209.3M at current pricing) — a signal that large-cap ETH treasuries remain active even as BTC commands headline attention. Bit Digital's cumulative 140,196 ETH position grew 187 ETH over the disclosure period. Sphere 3D disclosed a modest 26 BTC total position, up 11 BTC since last filing.
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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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$2.0B
100.0%
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 ETH
1 entity
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Value pending
0.0%
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 SOL
1 entity
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Value pending
0.0%
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BTC treasury filings outnumber ETH and SOL combined this week by a factor of four, yet the ETH balance disclosures (BitMine, Bit Digital) reveal multi-period accumulation that dwarfs weekly purchase counts. The implication: BTC momentum is driven by discrete, large buys from household names; ETH adoption clusters among infrastructure and mining operators, building holdings through steadier cadence rather than headline acquisitions. SOL remains a single-filer story.
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Unlock the full picture
See how this position ranks against every other tracked treasury, its share of total supply, and the market mood on the day of each transaction — with Pro.
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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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