August turned out to be a sensational month for Bitcoin, defying the gloomy expectations of most analysts. In two weeks, the asset compensated for three months of losses, showing growth of nearly 28% and firmly establishing itself above the $80,000 mark. However, it is too early to relax: historical statistics and the macroeconomic backdrop paint an extremely ambiguous picture for September. The decisive factor, according to my forecasts, will be not so much the Fed meeting as a specific date on the calendar—September 25.
Macroeconomic backdrop: is the rate rising again?
The key trigger of uncertainty was the speech by the Federal Reserve Chair in Jackson Hole. The market instantly reacted to his rhetoric: the probability of a rate hike at the September meeting jumped from 45% to 60% in just one hour. This is a serious signal for all risk assets, including cryptocurrencies.
An analysis of the Fed Chair's speech reveals several alarming points. The labor market remains resilient with unemployment around 4.1%, and corporate capital expenditures are growing by 9% per year—largely driven by the AI boom. However, inflation, measured by the Fed's preferred indicator (PCE), stubbornly holds at 3.7% against the 2% target. Meanwhile, about half of goods and services continue to rise in price at rates above 3% per year. The regulator, it seems, is not confident in a sustained movement of inflation toward the target, which lays the foundation for possible tightening.
A high rate enhances the appeal of U.S. Treasury bonds, strengthens the dollar, and forces investors to demand a higher risk premium from stocks and digital assets. Bitcoin, as the most liquid crypto asset, finds itself first in line under the pressure of global dollar liquidity.
Key September dates: a calendar of risks
The month's density of events is striking. The first half of September includes labor market reports (on the 1st and 4th), the producer price index (September 10), and, most importantly, the release of August CPI (September 11). These data will serve as the litmus test for the Fed's next steps. This is followed by the regulator's meeting on September 16 with updated economic forecasts, and on September 18—the Bank of Japan meeting, which could impact carry trades.
However, I highlight September 25 as the main day of the month. On this day, the quarterly block of Bitcoin options expires with an open interest of about $12 billion. The market structure indicates that a significant portion of traders is pricing in a drop in BTC to $70,000. This creates ideal conditions for heightened volatility and false breakouts in the second half of the month.
Technical levels and movement scenarios
My base scenario is consolidation in a wide range. The lower boundary is the $74,000–75,000 zone, and the upper boundary is $80,000–84,000. A move toward $100,000 in September is unlikely, but I do not expect a crash either.
Inflows into spot ETFs will be the key indicator of bullish strength. To move into the $74,000–75,000 zone, outflows of $400–800 million over several sessions are sufficient. To recover from $75,000 to $80,000, inflows of $800 million–$1.2 billion will be needed. However, to attack $84,000–85,000, substantial inflows of $1.5–2.5 billion are already required.
Before the CPI release on September 11, I expect profit-taking and a pullback to $75,000, $74,000, and even $72,000. If inflation comes in weaker than forecasts and ETFs do not show large outflows, the probability of a rate hike will decrease, and Bitcoin will quickly return to the $80,000–84,000 range. Otherwise, with high inflation, the probability of a rate hike could jump to 70–80%, and losing the key support at $74,000–75,000 would intensify the correction toward $70,000–72,000.
The Fed meeting on September 16 itself may not trigger a sharp reaction if the market has already priced in a rate hike in advance. A much stronger move should be expected precisely on the release of inflation data.
My verdict: September is traditionally the second worst month for BTC, with an average return of about −3%. However, over the past three years, it has closed in positive territory, suggesting a shift in the seasonal paradigm. Nevertheless, building forecasts solely on seasonality is a mistake. I expect movement in a wide range with a downward bias in the first half of the month and an attempt to return to $80,000–84,000 in the second, provided that inflation data do not worsen the picture. The key signal for entry is the market's reaction to the options expiration on September 25.