Trading in stock markets or commodity markets is actually trade in underlying assets which are not wholly financial in themselves, although they often move up and down in value in direct response to the trading in more purely financial derivatives. Typically commodity markets depend on politics that affect international trade, e.g. boycotts and embargoes, or factors that influence natural capital, e.g. weather that affects food crops. Meanwhile, stock markets are more influenced by trust in corporate leaders, i.e. individual capital, by consumers, i.e. social capital or "brand capital" (in some analyses), and internal organizational efficiency, i.e. instructional capital and infrastructural capital. Some enterprises issue instruments to specifically track one limited division or brand. "Financial futures", "Short selling" and "financial options" apply to these markets, and are typically pure financial bets on outcomes, rather than being a direct representation of any underlying asset.