The market is currently down, with the Nasdaq slipping 0.3%, the S&P 500 declining 0.5% and the Dow falling 0.5%. The transportation sector is a category of stocks relating to the transportation of goods or customers. It is made up of airlines, railroads and trucking companies. The performance of the transportation sector is sensitive to the price of oil. Because operations revolve around the use of vehicles, fuel prices represent a significant cost to transportation companies. As the price of oil rises, transportation companies will be expected to earn less. Inversely, these companies do well when the cost of fuel decreases.

The Transportation sector (IYT) is down 0.4%, underperforming the market overall. The current biggest movers in the sector are:

Company Market Cap Percentage Change
GasLog (NYSE:GLOG) $738.6 million +4.3%
Air (Nasdaq:AIRM) $1.42 billion +2.2%
Navios Maritime Partners (NYSE:NMM) $729.1 million +1.8%
Con Way (NYSE:CNW) $1.57 billion -1.6%
Mobile Mini (Nasdaq:MINI) $913.6 million +1.6%
Alexander & Baldwin (NYSE:ALEX) $1.24 billion -1.4%
Huntington Ingalls Industries (NYSE:HII) $2.11 billion +1.3%

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GasLog (NYSE:GLOG) has increased to a share price of $12.25, a 4.3% rise. This morning, the company is trading a volume of 215,341 shares.

Rising 2.2%, Air (Nasdaq:AIRM) is currently trading at $112.70 per share. The company's volume is currently 35,044 shares for the day, 0.1 times the average daily volume.

Navios Maritime Partners (NYSE:NMM) is at $12.35 per share after an increase of 1.8%. So far today, the company's volume is 75,932 shares. This is a sign that there will be less trading activity than there was yesterday.

Con Way (NYSE:CNW) is currently trading at a share price of $27.60, a 1.6% decline. At 96,005 shares, the company's volume so far today is 0.2 times the average volume over the last three months.

After rising 1.6%, Mobile Mini (Nasdaq:MINI) is currently trading at a share price of $20.30. The company's volume for the day so far is 39,484 shares.

At $28.46, Alexander & Baldwin (NYSE:ALEX) has slipped 1.4%. The company's volume is currently 80,346 shares for the day, 0.3 times the average daily volume.

Huntington Ingalls Industries (NYSE:HII) is up 1.3% to reach a current price of $43.01 per share. The company's volume for the day so far is 145,159 shares. At this rate, trading activity will likely be down from yesterday when 616,754 shares changed hands.

The Bottom Line No matter the economic climate, Wall Street will always have stocks that make major moves each week. Paying close attention to the previous ratios will help you identify key times to adjust your strategy. Tools like valuation ratios and profit margins, however, are only as useful as the context you put them in; remember to take historical data and competitor performance into account.