Most commonly, patients describe acute tenderness in the buttock and sciatica-like pain down the back of the thigh, calf and foot. Typical piriformis syndrome symptoms may include: 1  A dull ache in the buttock. 2  Pain down the back of the thigh, calf and foot (sciatica). 3  Pain when walking up stairs or inclines.
There are currently 10 sectors and 68 industries. Three of the 68 industries do not have companies represented in the S&P 500 Index; therefore, performance is not available for Marine, Transportation and Infrastructure, and Water Utilities.
Industry Overview: Brokers and Exchanges. The Brokers & Exchanges Industry is cyclical and comprised of two distinct types of businesses. Brokerages, also known as financial services companies, strive to meet the investing needs of their clients, and exchanges facilitate securities trading. Net profits correlate to the performance of the broader equity market.