This report is from today's CNBC Daily Open, our international markets newsletter. CNBC Daily Open brings investors up to date on everything they need to know, no matter where they are. Like what you see? You can subscribe here.

Cut now, but less ahead
The Federal Reserve of the United States low interest rates by 25 basis points on Wednesday, taking its overnight lending rate to a target range of 4.25%-4.5%. In the Fed's dot plot indicating expectations for rates in the coming years, the central bank indicated the most two rate cuts only for 2025less than the four cuts projected earlier in September.

Strong sales in the markets
American markets sold out suddenly on Wednesday. the Dow Jones Industrial Average lost more than 1,000 points, falling 2.58% for the 10th day of losses. the S&P 500 withdraw 2.95% and the Nasdaq Composite sank 3.56%. The pan-European Stoxx 600 — that end of trade before the Fed decision — increased 0.15%.

Tesla shares reverse
Tesla shares fell 8.3% Wednesday, their steeper fall since Donald Trump won the US presidential elections in November, amid heavy losses in the broader market. While shares are still up 75% from the Nov. 5 election, the company's stock appears "widely disconnected ... from the fundamentals," Barclay's analysts wrote in report on Wednesday.

Disappointing guidance from Micron
shares of Micron fell more than 15% in extended trading after the company gave guidance substantially weaker than expecteddespite beating expectations on earnings for its last quarter. For the current quarter, Micron expects revenue to come in at around $7.9 billion. That's well below the $8.98 billion expected by analysts, according to LSEG.

(PRO) Why were the markets so disappointed
The stock market took a hit after digesting the Fed's forecast that monetary policy in 2025 will remain tighter than previously predicted. CNBC's Sarah Min looks at why the investors were so disappointedand what market observers think about the Fed's decision.

Wednesday's dramatic sell-off in the markets is a stark reminder that forecasts influence stock movements far more than actual circumstances.

The Fed cut its key interest rate by 25 basis points. Borrowing costs will decrease and corporate investment should be stimulated, which should lead to job creation and boost growth. This, in turn, theoretically pushes stocks up.

But investors were already confident about Fed tapering on Wednesday. Before the conclusion of the Fed's December meeting, the futures market indicated a 98% chance of a 25 basis point cut, according to the CME FedWatch tool. This means that investors had already priced the benefits of the rate cut into stocks. In other words, yesterday's decline will have little effect on stock prices. Investors may have been pricing in even more optimism from that single rate cut. Just a day ago, investors were betting on an 81.6% chance that the Fed would cut rates by another 25 basis points in January.

The President of the Fed, Jerome Powell, defeated that hope.

"With today's action, we have reduced our policy rate by a full percentage point from its peak, and our policy stance is now significantly less restrictive," Powell said in his post-meeting news conference. "We may therefore be more cautious as we consider further adjustments to our policy rate."

The possibility of a 25-point cut next month has evaporated to just 6.4%, according to the futures market, after the Fed released its updated dot plot indicating just two cuts for 2025 .

It is this huge paradigm shift - from hopes that the Fed will go full throttle with cuts to the reality that it may even take its foot off the accelerator - that is sending tremors through the markets.

In other words: It's like waking up in anticipation of a present on Christmas day, only to find yourself missing the presents. That disappointment doesn't happen at any other time of the year.

As David Russell, global head of market strategy at TradeStation, wryly noted, "Good-bye punch bowl. No Christmas cheer from the Fed."

— CNBC's Daria Mercado, Jeff Cox, Yun Li, Brian Evans and Lisa Kailai Han contributed to this report.