Glossary · PSX Mechanics

Margin

The amount of capital an investor must deposit with a broker to open or maintain a leveraged position.

Written by BSL Research Desk · Reviewed by BSL Research (SECP-licensed securities brokerage) · Updated 13 Jul 2026

01What is Margin?

The definition — and what it means in practice.

Margin is the amount of capital you must deposit with your broker to open or maintain a leveraged position. It acts as a security buffer against losses when part of the trade is effectively financed rather than fully paid upfront. Margin requirements can be set as a rupee amount or a percentage of the position value, and they typically change with the instrument, volatility, and your available collateral.

Margin matters because leverage can amplify both gains and losses, and margin rules determine how much price movement you can absorb before you must add funds or reduce the position. If losses reduce your equity below the required level, the broker may issue a margin call or close out positions to restore required cover. Understanding margin helps you plan cash needs and avoid forced selling.

In plain English

If margin is 30%, a Rs 100,000 leveraged position may require about Rs 30,000 deposit; losses that erode this buffer can trigger a margin call.

  • Margin is your required deposit to support a leveraged position.
  • It is not the same as the full purchase price of shares.
  • If your equity falls below the required level, you may face a margin call or forced reduction.
  • Higher volatility or larger positions can mean higher margin requirements.
  • Margin increases risk because losses can exceed your initial deposit.

02How margin works on the PSX

The Pakistan-specific rules, conventions, and numbers.

On the Pakistan Stock Exchange (PSX), regulated leverage is commonly associated with the Margin Trading System (MTS) and broker Margin Financing (MFS), which replaced older carry-over trades. In practice, “margin” is the cover your broker requires to provide that leverage and to manage settlement and market risk while the position remains open.

PSX equity trades settle on a T+1 (one business day) basis and clear through NCCPL, with shares held electronically at the Central Depository Company (CDC). For a leveraged position, your broker will monitor whether your margin remains sufficient as prices move during trading hours. If it does not, you may be required to add cash or collateral promptly to keep the position open.

03Common misconceptions

Where investors most often get this wrong.

Myth

Margin is the broker’s fee or commission.

Reality

Margin is a refundable deposit or collateral requirement for leverage. Broker charges are separate items such as brokerage commission and taxes.

Myth

If I am on margin, I can only lose my margin amount.

Reality

Leverage can magnify losses; losses can exceed the initial deposit. If the position moves against you, you may have to add funds or positions may be closed.

Myth

Margin only applies to day trading.

Reality

Margin can apply to any leveraged position, whether held intraday or longer, as long as the broker is financing part of the exposure.

04Using margin on BSL

Where this term shows up across the platform — with live data.

  • Understand how leverage works in practice with our guide to Leverage.
  • See related PSX mechanics terms like Margin Call to understand what happens when cover falls.
  • Explore regulated leverage structures via Margin Trading System.
  • Use the Market view to track price moves that can affect margin requirements.

05Frequently asked questions

What investors ask about margin on the PSX.

Frequently Asked Questions

In Pakistan, margin generally refers to the deposit or collateral your broker requires to open or maintain a leveraged position. It is a risk buffer that helps cover potential losses and supports the financed part of the trade.

06Related terms

Keep building the picture.

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