Sometimes, a stock, a sector or even entire stock markets being down shouldn't be viewed as a sell signal, but rather, a buying opportunity. (moneysense.ca)
Just as with valuing individual companies, the tools we use to value entire stock markets fall into two categories. (researchaffiliates.com)
Review: Scott Patterson argues that high - frequency trading has turned the entire stock market into one big dark pool where only the algorithms know what's going on. (canadianbusiness.com)