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    • Margin Calculators for Options
    • Regulatory Timeline
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    • P&L Offsets
    • Brokers Offering Portfolio Margin
    • Margin Rate Comparison
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The Margin Investor

Regulatory Timeline

The regulatory timeline provides an overview of the genesis of Portfolio Margin regulations in the US.

Stress Test Market Moves

This section discusses the moves that are applied to different types of underlyings such as broad based indexes, sector indexes and individual stocks. 

P&L Offsets

The P&L offsets define the netting of gains against losses on correlated indexes.  This section goes into the details.

Margin Calculators for Options

Determining the margin for option strategies can be complex. These handy calculators make it easy. The two calculators cover both Reg T margin and Portfolio margin.

Brokers Offering Portfolio Margin

A list of brokers that offer Portfolio Margin Accounts.

Margin Rate Comparison

A comparison of the rate charged on margin loans. Most online brokers are included in the list.
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