Bitcoin Falls Below Strategy’s Cost Basis: BTC At $73,270 Puts 843,738 BTC Underwater

Bitcoin dropped to $73,270 on May 28, 2026, falling below Strategy’s average acquisition cost of $75,700 for the first time. The company’s entire 843,738 BTC position, worth $63.87 billion at cost, is now underwater on paper by roughly $2 billion.

This is the level the market has been watching for two weeks. The $74,500 floor that held three separate tests finally broke, and BTC kept falling. The “Saylor floor” that traders relied on as a defensive bid zone did not hold.

What Just Happened

The weekly chart opened at $77,520 and sold off in a near-straight line through the week. BTC lost $74,500 on May 27, then accelerated lower to $73,270 on May 28, the lowest level since March 2026.

The break below Strategy’s $75,700 cost basis is significant for a specific reason. Strategy holds 843,738 BTC, roughly 4% of Bitcoin’s total supply, and has been the single most consistent corporate buyer since 2020. The market priced in defensive accumulation near the company’s average cost. That bid either did not show up, or it was overwhelmed by selling pressure.

Now Strategy faces an unrealized loss on its entire position. Q1 2026 already reported a $12.54 billion net loss from a Bitcoin impairment. This drop adds to that paper loss heading into Q2.

Why It Matters

Three implications follow from BTC trading below Strategy’s cost basis.

First, the psychological floor is gone. For years, traders treated Strategy’s average cost as a level where buying would emerge. That assumption just failed. The next price level is determined by spot demand and ETF flows, not corporate accumulation.

Second, the dividend question intensifies. Strategy has roughly $1.5 billion in annual dividend obligations across its preferred stock instruments. Saylor said in May it was “not unlikely” the company would sell BTC to fund those payments. Selling into a market already below cost basis would amplify downward pressure.

Third, the leverage concern. Other Bitcoin treasury companies including MetaPlanet, MARA, and Twenty One Capital have cost bases concentrated between $70,000 and $80,000. They are all underwater now. If any are forced to sell to meet obligations, it creates a feedback loop.

Where Bitcoin Goes From Here

The immediate support is $71,000, the previous consolidation base. CryptoQuant data shows 30-day apparent demand at approximately -147,000 BTC, the weakest of 2026, meaning selling has dominated for a month.

Below $71,000, the next major level is $63,000, which would put Bitcoin back to October 2025 prices. Polymarket currently assigns a 65-71% probability that BTC drops below $55,000 before year-end, up sharply from prior weeks.

On the upside, reclaiming $75,700 on a daily close would suggest the break was a liquidity flush rather than a structural breakdown. That would require a macro catalyst: a soft PCE print, an Iran de-escalation, or a CLARITY Act full Senate vote.

The counterpoint comes from on-chain data. Whale wallets holding 1,000+ BTC hit a yearly high of 1,282 entities on May 22. Smart money has been accumulating while retail capitulates. That divergence historically resolves toward whales, but the timing is unpredictable.

Key Levels

Support: $73,000 / $71,000 / $63,000 Resistance: $74,500 / $75,700 (Strategy cost) / $77,500

Bottom Line

Bitcoin trading below Strategy’s $75,700 cost basis is the most significant structural development of May 2026. The defensive floor the market relied on for years just failed. Strategy’s entire 843,738 BTC position is underwater, and the dividend funding question becomes urgent if the price stays here.

A reclaim of $75,700 signals a flush. Continued weakness toward $71,000 confirms the breakdown. Whale accumulation is the bullish counterweight, but the chart belongs to sellers right now.

Bearish. The Saylor floor broke.

Frequently Asked Questions

What is Strategy’s Bitcoin cost basis? Strategy holds 843,738 BTC at an average acquisition cost of $75,700 per coin, totaling approximately $63.87 billion.

Is Strategy underwater on Bitcoin? Yes. With BTC at $73,270 on May 28, 2026, Strategy’s entire 843,738 BTC position is below its $75,700 average cost, an unrealized loss of roughly $2 billion.

Will Strategy sell Bitcoin now? Saylor said in May it was “not unlikely” Strategy would sell BTC to fund its $1.5 billion annual dividend obligations. Selling below cost basis would add downward pressure.

How low can Bitcoin go in 2026? Immediate support is $71,000, then $63,000. Polymarket assigns a 65-71% probability of BTC dropping below $55,000 before year-end.

This article is for informational purposes only and does not constitute financial advice.