Similarly, for a short position that has become very profitable, you may move your stop-buy order from loss to the profit zone in order to protect your gain.
When private investors have little appetite for American assets, as in 2003 and 2004, central banks buy a lot in order to stop their currencies from appreciating too much against the dollar.
Big Bang saw many of the City's historic names disappear in a frenzy of takeovers as banks jostled to buy jobbers and stockbrokers in order to become one-stop shops.
Sanchez said he expects that ultimately a deal will get done before the deadline, or a small stop-gap measure will be agreed to in order to buy more time, which would cause gold prices to retreat.