There are many different factors that can affect the market which in turn 
affects the market. A good example of this is the COVID 19 outbreak.
Recent Effects
Every country in the world almost will have its markets affected by the virus outbreak. For Malaysia, it is projected that the negative market effects will begin to surface in the first quarter of 2020. Just how much of effect it will have on the market will depend on the spread and duration of the virus. Projections were compared against the SARS outbreak in 2003 and its effects on the GDP were 5.9%.
Carrying On
Although most countries are scrutinizing the current situation regarding the virus and the markets. The traders are expected to trade in the local note. Investors are uneasy in all forms of trade which is to be expected and is taking place worldwide. Global investors are wary of trade. Bank Negara has completed a full revision of the yearly GDP forecast. This is something that investors are watching closely.
The Oil Market
To add to the woes of trade the oil market has become volatile. It has been 
taking a downward slide which has dropped the price of oil to all-time lows, and an abundance of this commodity. Although a bounce-back was recognized it is believed that this is a temporary action.
Efficiency
Just prior to when the outbreak created havoc the Malaysian market held stable and progressing efficiently. As of late February, the ringgit was able to open higher and traded well. Even though the threat of the virus was ramping up. The performance of the US dollar-ringgit allowed the Forex volume to double from the average of the previous week.
Secondary Bond Market
The bond market was realizing a solid trade volume on a daily basis. The credit for the stability in many of the markets was given to how the financial markets of Malaysia had matured.