What is Margin Call?
Margin call occurs when account equity falls below required margin — add funds or reduce positions.
Formula
Example Account: - Position Value: $50,000 - Loan from Broker: $25,000 - Your Equity: $25,000 (50%) - Maintenance Margin: 30% If Position Falls to $35,000: - Loan from Broker: $25,000 (unchanged) - Your Equity: $10,000 (28.6%) - Below 30% = MARGIN CALL Amount to Deposit: Needed Equity = $35,000 × 30% = $10,500 Current Equity = $10,000 Margin Call Amount = $500 minimum
Indian market context (NSE)
Reference levels: Nifty 50 at 24,300, Reliance Industries at ₹1,300, Bank Nifty futures at 55,000 (lot size 30). Examples below show how Margin Call shows up on Indian index, equity, and futures books — update to live quotes in your journal.
Nifty 50 perspective
Nifty NRML margin spike after volatility expansion reduces free cash — partial square-off at 24,300 if span exceeds ledger balance.
Reliance Industries perspective
Reliance MTF or pledged holdings haircut can trigger broker margin call even when stock holds ₹1,300 — monitor collateral haircuts.
Bank Nifty futures perspective
Bank Nifty MIS at 55,000 with 80% overnight margin hike can force exit at loss — keep 30% cash buffer above exchange minimum.
How to validate
- Validate Margin Call with a written rule and at least 20 tagged examples.
- Ask whether the reading changed because of process or one outlier trade.
- Compare two independent time windows before adjusting position size.
- Document validation date in weekly review notes.
How to track in TradeLyser
- Mention Margin Call in trade comments when it influenced the decision.
- Mirror the term in weekly review questions for consistency.
- Filter trades mentioning the concept during monthly analytics.
- Cross-link to related glossary terms in mentor notes.
Best practices
- Teach Margin Call the same way to mentors and peers — shared vocabulary.
- Re-read this page after major rule changes to Margin Call usage.
- Prefer one improvement per month over ten simultaneous tweaks.
- Link learn articles when Margin Call needs deeper study.
Common pitfalls
- Using Margin Call buzzwords without measurable journal tags.
- Copying another trader’s Margin Call rule without sample size context.
- Skipping weekly review because the term feels “basic”.
- Letting social media redefine Margin Call mid-quarter.
How to use this in TradeLyser
Log peak margin % weekly; define deleveraging steps before call happens.
Related terms
Drawdown at any moment is the gap between your latest equity peak and today’s equity. Max drawdown is the largest such gap over a period.
Leverage means controlling larger notional than cash posted. F&O margin is a form of leverage with gap and margin-call risk.
Margin is the deposit brokers require to hold leveraged positions. It can rise sharply into expiry or on gap moves against you.
Mark to market (MTM) is the daily revaluation of open derivatives positions against the exchange settlement or closing price, with profits credited and losses debited to your ledger. On NSE F&O, MTM runs on open futures and options positions so capital reflects current risk, not just entry price.
Naked short option has no covering long — margin heavy with theoretically large loss on calls.
SPAN (Standard Portfolio Analysis of Risk) margin is the minimum margin NSE clearing requires to hold a derivatives portfolio, computed from scenario-based risk across price and volatility moves. It replaces fixed-percentage margin with a portfolio-aware number that can shrink when you hedge and expand when exposure concentrates.
FAQ
What if ignore margin call?
Broker squares positions — tag forced exits.
Reduce size after near-call?
Write rule when utilisation exceeds threshold.
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