Dow is expected to fall by 300 after the fall of Amazon technology

The Nasdaq is about to dive nearly 4% on Friday's opening after Amazon has announced disappointing sales and forecasts. Amazon shares fell 10% in pre-market trading.

Various fears have led to a fall in inventories this month. Nasdaq is on its way to its worst month since November 2008.

Although Amazon posted a record profit, the weaker-than-expected business figure and outlook underline concerns that investors have become too euphoric about rising stocks.

Markets are beginning to anticipate slowing economic growth and earnings as the bull market and economic cycle age. Stimulus measures resulting from tax cuts will eventually fade and interest rate hikes by the Federal Reserve could also slow down growth.

Investors are also worried about the resistance of the economy to slowing global growth and trade wars. The government's third quarter GDP report, to be released Friday morning, is expected to show strong but decelerating growth.

Global markets have also been in turmoil. European markets have clearly opened up, while Asian markets have closed in the red.