If your OneDrive for Business library has more than 20,000 items, you canât use the sync app as described in this article to move your files to Office 365. The item count in OneDrive for Business is comprised of files and folders in the library, plus any files in your SharePoint recycle bin.
Stock market index. A stock index or stock market index is a measurement of the value of a section of the stock market. It is computed from the prices of selected stocks (typically a weighted average). It is a tool used by investors and financial managers to describe the market, and to compare the return on specific investments.
The Standard & Poor's 500 Index (S&P 500) is an index of 500 stocks seen as a leading indicator of U.S. equities and a reflection of the performance of the large cap universe, made up of companies selected by economists.