Bitcoin's 25% monthly surge revives cycle debate as pullback risk builds

Bitcoin gained about 25% in a month, from roughly $64,420 to nearly $80,700, reviving the market cycle debate as traders weigh a pullback. The token last traded near $77,470 after a week of sideways grinding and fading.

The move has traders invoking the "Bart Simpson" pattern, a chart formation describing a sharp spike, a flat top, then a snap-back toward the starting point. Crypto analyst Benjamin Cowen flagged the setup on X on Sept. 1 as Bitcoin consolidated below its August high.

The four-hour chart reads mixed rather than alarming. The Relative Strength Index sits at 44.8, leaning bearish but far from the sub-30 oversold zone that typically precedes a breakdown. The Average Directional Index is at 22, below the 25 threshold traders use to confirm a trending market. The Squeeze Momentum indicator reads bearish, flagging compressed volatility ahead of a breakout, while the 50-period exponential moving average still holds above the 200-period average — the textbook definition of a bullish trend structure.

Analysts have flagged $75,800 as the level that would confirm the bearish setup. Holding above it tends to invalidate the pattern.

What a flash crash would require

A completed Bart Simpson needs the reversal to happen roughly as fast as the spike did. For Bitcoin, that means giving back the whole August rally in hours — a near 17% snap toward the $64,000 launch zone — rather than across weeks. Getting there requires a specific trigger: a break below $75,800 and an event violent enough to force cascading leveraged liquidations. Bitcoin has produced exactly that before, including the $19 billion liquidation wipeout triggered by an October 2025 tariff threat, so the mechanism exists. It has not shown up in this week's indicators, which is why the pattern remains a debate rather than a confirmed move.

The slow-bleed alternative

There is a second bearish path that looks nothing like Bart Simpson. Drawing a descending trendline from the roughly $80,626 August high produces a gradual channel reaching the $62,000 area over about eight weeks, into late October, rather than in a single violent leg. That is a similar percentage decline stretched across a seasonally weak September and a historically volatile October.

September is Bitcoin's weakest month, closing in the red eight of the last 13 years since 2013 with an average 2.97 percent loss. This year it collides with a live Federal Reserve decision: the CME FedWatch tool prices a 64 percent chance the Fed hikes rates at its Sept. 15-16 meeting, typically bearish for risk assets. Spot Bitcoin ETFs shed roughly $236 million on Tuesday alone, and oil has climbed into the low $90s a barrel after fresh U.S.-Iran strikes near the Strait of Hormuz, adding inflation pressure to the case for a hike.

The distinction matters for anyone trading around the meme. A flash crash needs a forced-liquidation event and a fast break of $75,800 to complete the pattern's shape. A drawn-out correction just needs September's seasonal drag, a Fed hike, and time. Either way, the cycle debate that a 25 percent month reignited now hinges on whether Bitcoin holds $75,800 into the Fed decision.

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