Bitcoin, Gold Whipsaw After U.S. CPI as Hotter Core Print Triggers Split-Second Selloff

Bitcoin and gold saw a brief "flash crash" on Friday moments after the U.S. August inflation report, before clawing back most of the move within minutes. While the year-over-year figures matched expectations, markets reacted to an upside surprise in monthly core inflation. Core CPI (excluding food and energy) rose 0.3% month over month in August versus the 0.2% consensus. Annual core inflation held at 2.4%, in line with estimates, and headline CPI also matched forecasts at 3.4%. In other words, the annual prints offered little new signal for the Federal Reserve; the monthly core reading did. Ahead of the release, 17 published forecasts for monthly core CPI ranged from 0.16% to 0.24% and all rounded to 0.2%. The reported number effectively printed 0.29% (about a 3.5% annualized pace), topping the entire forecast range. AUGUST U.S. INFLATION DATA CPI: 3.4% YoY (Est. 3.4%) CPI: 0.4% MoM (Est. 0.4%) Core CPI: 2.4% YoY (Est. 2.4%) Core CPI: 0.3% MoM (Est. 0.2%) The Bureau of Labor Statistics said shelter, the largest CPI component, rose 0.3% on the month and 3% over the year, after recent signs of cooling. Energy was the main driver of the headline number. The energy index advanced 2.1% in August, with gasoline up 3.9%. Over the past 12 months, gasoline prices are up 27.4%. Oil prices have also firmed, with Brent trading near $106 this week and West Texas Intermediate near $101, marking the first run above $100 in almost four months. Gold Stops Trading Like an Inflation Hedge Gold spot initially jumped toward $4,353 on the release, then dropped to about $4,292 within the same minute, later stabilizing near $4,315. Bitcoin (BTC) followed a similar pattern, sliding from roughly $77,100 to $76,050 before recovering. The move echoed Thursday's producer price report, which pulled gold, Bitcoin, and the S&P 500 lower together. The underlying driver has been the bond market: hotter inflation tends to push Treasury yields higher, raising the opportunity cost of holding non-yielding assets. Both gold and Bitcoin offer no income stream. The 10-year Treasury yield was already around 4.95% heading into the release. This was the second U.S. data point in a week to hit both assets at once. On September 4, August payrolls came in at triple forecasts and triggered a similar reaction. Fed Decision Due Wednesday The Federal Open Market Committee meets September 15–16, with the rate decision expected Wednesday afternoon. Prediction market Kalshi priced the odds of a 25-basis-point hike at 61% before the CPI release, versus 39% for no change. Many economists have favored a hold, while traders have leaned toward a hike; the hotter monthly core reading supports the market's case. Thursday's producer price data was also firm in categories that feed into Personal Consumption Expenditures (PCE), the inflation gauge the Fed targets formally. That backdrop raises the risk that August core PCE could come in hotter than the CPI report suggests. Rate markets are already pricing tighter policy as three central banks are expected to hike this month. The Bank of Japan and the European Central Bank also have decisions due in coming days. Bitcoin was trading near $77,503 by midday Friday, down 3.3% over the past 24 hours. The speed of the rebound suggested stretched positioning rather than a surge in fresh conviction, leaving Wednesday's Fed decision as the next test of whether one hot month is enough to shift policy.