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Bitcoin (CRYPTO: BTC) has lost nearly half its value since peaking at $126,000 in October 2025. The drop has taken BTC through $100,000, $80,000, and $70,000, but every time the Bitcoin price has reached the $66,000 support level, buyers have shown up and pushed it back.
The support is being tested right now as Bitcoin has slipped to $66,000 yet again. The $14.16 billion options expiry on March 27 pushed Bitcoin as low as $65,720, and the ongoing Iran war has added even more selling pressure across crypto markets. The $66,000 support has held three times in 2026 so far, and if it breaks, the next confirmed support doesn't show up until $60,000—the level Bitcoin bounced off during the February crash.
Why Did Bitcoin Drop to $66,000...