風險聲明：差價合約（CFD）是屬於複雜的投資產品，因杠杆而存在快速虧損的高度風險。
交易前您應衡量是否瞭解差價合約以及是否能夠承擔發生虧損的高風險。
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Order
A call to buy or sell an asset at a particular price point or within a specific range. Orders can be placed via brokers, dealers, exchanges or online platforms.
Order Block
An order block is a concept from the world of so-called smart-money trading, an attempt to spot where big institutions built their positions. In practice it points to the last opposing candle before a sharp, powerful move: the final down candle before a strong rally, or the last up candle before a steep drop, on the theory that this is where large players quietly loaded up before driving the price.
Traders who follow the idea treat these zones as areas where price may react again if it returns.
Example: A trader spots a strong rally that began from a single big bearish candle, and marks that candle as a bullish order block. Later, when the price drifts back down into the same zone, she watches for buyers to step in again, reasoning that the institutions who were active there before may defend the level once more; she uses it as a potential spot to go long, with a stop tucked just beyond the block.
Order type
The classification of an order based on its execution instructions, such as market order, limit order or stop order.
Organization of the Petroleum Exporting Countries (OPEC)
OPEC is the cartel that tries to steer the price of oil. Founded in 1960 by a handful of major producers, the Organization of the Petroleum Exporting Countries now groups together a dozen or so member nations, with Saudi Arabia its most powerful voice, that between them control a large share of the world’s crude reserves and output.
Its core function is to coordinate production, raising or cutting how much oil its members pump in order to influence the global price.
Example: When OPEC ministers gather and agree to curb output, the aim is to prop up prices by tightening supply; markets often move on the decision, and sometimes on the mere rumour of one, before the meeting even ends. The group’s power has ebbed and flowed over the decades as rival producers like US shale have grown, but an OPEC announcement still ranks among the events oil traders watch most closely on the whole calendar.
Oscillator
A technical indicator that measures the momentum of price movements.
OsMA
OsMA, short for Moving Average of Oscillator, is a technical indicator that measures the gap between an oscillator and its own signal line, sharpening the momentum picture the underlying tool provides. In its usual form it is built from the MACD: OsMA is the MACD line minus its signal line, the very thing plotted as the MACD histogram.
It is drawn as bars above and below a zero line, positive when the MACD sits above its signal, negative when it sits below.
Example: A trader uses OsMA to catch momentum shifts a touch earlier than the raw MACD crossover would. When the OsMA histogram crosses up through the zero line, moving from negative to positive, she reads it as momentum turning bullish, the same signal as a MACD crossover but shown as a clean move across zero; a slip back below zero warns her the momentum is fading again and the trend may be losing its grip.
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