1.   Argentine stocks retreated from four-year highs as speculators sold shares acquired by exercising options that expire this week.

2.   Short covering occurs when speculators sell borrowed securities in hope of buying them back at a lower price and pocketing the difference.

3.   Speculators sold contracts to offset existing long positions, exaggerating the decline, traders said.

4.   Speculators sell a currency hoping it will fall and they can buy it later even more cheaply, with the difference as their profit.

5.   Speculators this month sold a near-record number of oil contracts, on which they stood to lose money if the price of crude oil rose.

6.   Speculators sell a currency hoping to weaken it further and make a profit buying it back at a cheaper price.

7.   Speculators sell ringgit betting the currency will fall and they can buy it back more cheaply later, the difference being their profit.

8.   That was not a big move, but bigger ones were to come soon, as speculators sold bonds, driving prices down and interest rates up.

9.   That was possible because some speculators sold the stocks without owning them or borrowing them, as is generally required.

10.   The measure is intended to make it more difficult for currency speculators to sell short the koruna.