What is the primary purpose of the margin system in stock markets?

"To ensure profits for investors" "To stabilize fluctuating stock prices" "To mitigate risks associated with price uncertainty" "To increase trading volume in the market"

When is the Value at Risk (VAR) margin typically calculated and collected?

"At the end of each trading week" "Before the investor places a buy or sell order" "After the stock price has significantly changed" "When the investor decides to sell their shares"

What does the Extreme Loss Margin (ELM) aim to cover?

"Losses exceeding the usual VAR calculations" "Profits made on high-risk investments" "Fluctuations in international currency exchange rates" "Taxes incurred on stock market transactions"

How is the Mark to Market (MTM) margin determined?

"By analyzing historical stock price volatility" "By comparing the transaction price with the closing price" "By assessing the investor's overall portfolio value" "By predicting future market trends using statistical models"