What is the difference between margin pledging and margin trading?

While both margin pledging and margin trading involve using borrowed funds to amplify your buying power in the stock market, they differ significantly in how they operate and their associated risks. This chart will help you understand the same: 

FeatureMargin PledgingMargin Trading
Borrowing sourceExisting holdingsBroker’s funds
CollateralPledged assets (haircut applied)Purchased securities
Borrowed amountPortion of asset valueAs per the leverage provided by the broker and exchange rules
RiskMarket volatilityMarket volatility and price movement of purchased securities
BenefitsIncreased buying powerGreater leverage, ability to short-sell