A bellwether stock is one that is widely believed to be an indicator of the trend in stock market or a sector. If the bellwether stock is moving up or down, the whole sector or even market is expected to follow suit. A few stocks that are or have been considered bellwether stocks are Intel, Microsoft, General Electric, and General Motors. A bellwether stock is a stock which tends to lead the sector that it is in, along with the market as a whole. In some parts of the world, these stocks are known as “ barometer stocks.” Bellwether stocks tend to be respected blue chip stocks which command a large share of the market, A bellwether stock is a one that’s generally thought to be an indicator of the direction of the market overall – the market being either a sector (like technology), or an economy (like the US’s). When a bellwether stock performs well, that’s usually good news for its market and, conversely, when a bellwether stock performs poorly, that can signal bad news ahead for its market.