Editing Short (finance) (section)

=== Sources of short interest data ===
Time delayed short interest data (for ''legally'' shorted shares) is available in a number of countries, including the US, the UK, Hong Kong, and Spain. The number of stocks being shorted on a global basis has increased in recent years for various structural reasons (e.g., the growth of [[130/30]] type strategies, short or bear ETFs). The data is typically delayed; for example, the NASDAQ requires its [[broker-dealer]] member firms to report data on the 15th of each month, and then publishes a compilation eight days later.<ref>NASDAQ. [http://www.nasdaq.com/quotes/short-interest.aspx About the Short Interest Page].</ref>

Some market data providers (like [[Data Explorers]] and SunGard Financial Systems<ref>SunGard's [http://www.sungard.com/financialsystems/products/shortsidecom.aspx ShortSide.com] discusses the product.</ref>) believe that stock lending data provides a good proxy for short interest levels (excluding any naked short interest). SunGard provides daily data on short interest by tracking the proxy variables based on borrowing and lending data it collects.<ref>SunGard. [https://web.archive.org/web/20110916175729/http://www.thefreelibrary.com/SunGard+Launches+Borrow+Indices%3B+First+Proxy+for+Measuring+Short...-a0123159715 SunGard Launches Borrow Indices; First Proxy for Measuring Short Interest on a Daily Basis]. Business Wire.</ref>