Bitcoin miners trailed the coin far more than Strategy did on October 8

Crypto Briefing blames the bond market for the split. It argues that the macro backdrop is doing more to set crypto equity prices than anything happening on-chain ^[25]. The October 8 prices fit that loosely at best, because a rate shock should also have hit the most bitcoin-heavy balance sheet in the group. According to 24/7 Wall St., the S&P 500 ETF was down 0.3% that morning ^[13]. Strategy, the one company in the group that holds bitcoin outright, was down 1%, level with the iShares Bitcoin Trust [c11, c12, c18].

Taken as a simple ratio of losses, CleanSpark fell seven times as far as the bitcoin ETF that morning and MARA five times [d1, d2]. Over the trailing year the ratios shrink to about 1.2 for CleanSpark and 1.5 for MARA [d3, d4]. Crypto Briefing puts proxy betas at 1.5x to 3x or more against bitcoin ^[1]. The year lands at or below the bottom of that range. The single session lands well above the top.

24/7 Wall St. puts the gap down to costs. Power contracts, capital spending, depreciation and share issuance sit between the coin's price and what a miner's shareholders keep ^[2]. CleanSpark's latest quarter showed revenue down sharply from a year earlier, and a loss where it had earned money in the comparable quarter ^[15]. Both CleanSpark and MARA are moving capacity toward AI and data-center hosting, a pivot that needs heavy spending before it pays ^[16]. If there is a yield channel, I think it runs through that funding need. A miner that must raise capital before it earns a return pays more for that capital when long rates climb, and the 10-year yield is near 24-year highs ^[4].

Strategy's exposure runs the other way. At $83,000, the level bitcoin broke on October 7 ^[5], its stack of roughly 847,000 coins bought at about $75,400 ^[6] carries a paper gain near $6.4 billion ^[22]. It has no operating business to absorb a deeper slide, and 24/7 Wall St. says its convertible debt increases that exposure ^[3].

If yields ease and the miners then rally several times harder than the coin, Crypto Briefing's account holds and the miners are simply high-beta in both directions ^[25]. A miner gap that persists on days when yields stand still would point to costs instead. Strategy falling several times as far as the ETF in a selloff would mean its debt has begun to matter, and it would join the miners as a poor substitute ^[3]. On one morning of prices and a year of returns, I'd put the weight on costs. The counter-case is that the miners' funding needs tie them to yields anyway. Neither source gives a price move for Coinbase, so its place in the slide rests on Crypto Briefing's description alone ^[24].