The TrueTrend Blog

Clear, data-backed writing on Indian and global markets — option structure, market regime, open interest and the ideas behind the platform. No tips, just understanding.

Illustrative chart of implied volatility sitting above realised volatility most of the time, with one shock episode where realised volatility jumps above implied
Options & OI

Volatility Risk Premium: Why Option Writing Pays on Average, and When It Doesn't

Options usually price in more movement than arrives. That gap is the volatility risk premium: why it exists, who collects it, and when it flips.

TrueTrend Research Desk · 25 Sept 2026
Two illustrative intraday charts: with positive gamma exposure the index stays in a tight range near 24,000, with negative gamma exposure it trends steadily lower
Options & OI

Gamma Exposure (GEX): Why Dealer Hedging Pins Some Days and Fuels Others

Some sessions stay glued to one strike; others run all day. Gamma exposure (GEX) explains why: dealer hedging either brakes the index or accelerates it.

TrueTrend Research Desk · 25 Sept 2026
Stacked bar chart comparing the premium earned on one short Nifty call with the SPAN plus exposure margin it locks up, naked versus hedged
Options & OI

SPAN and Exposure Margin: What Option Writers Deposit and Why

Why writing one Nifty option can lock up twenty times the premium it earns: SPAN margin, exposure margin, and how a hedge shrinks the deposit, in round numbers.

TrueTrend Research Desk · 23 Sept 2026
Bar chart comparing two traders: one with a 70% win rate and negative expectancy, one with a 40% win rate and positive expectancy of 600 rupees per trade
Risk & Psychology

Trading Expectancy: The Win Rate vs Risk-Reward Math

A 70% win rate can lose money and a 40% win rate can make it. Expectancy is the one number that combines both. Here is how to work it out in round numbers.

TrueTrend Research Desk · 23 Sept 2026
Bar chart showing the cash needed up front for 1,000 shares worth one lakh rupees: about 20,000 rupees in a normal intraday trade, one lakh under ASM with 100% margin, and two lakh under GSM Stage II with a 100% deposit
Market Basics

ASM and GSM Explained: NSE's Surveillance Frameworks

ASM and GSM are the two frameworks NSE and BSE use to slow down stocks with odd price moves or weak fundamentals. Here is what each stage does to your trade.

TrueTrend Research Desk · 23 Sept 2026
Two-panel chart: an illustrative price line on top and its 10-day Rate of Change below, shaded green above the zero line and red below
Technical Analysis

Rate of Change (ROC): The Simplest Momentum Indicator

ROC is one subtraction and one division: how far price moved, in percent, over a fixed lookback. How to read it, how to pick the window, and where it misleads.

TrueTrend Research Desk · 23 Sept 2026
Two timelines comparing option styles: American-style options can be exercised on any day, while European-style options like Nifty and Bank Nifty can be exercised only at expiry but closed in the market on any trading day
Options & OI

American vs European Options: Why Indian Index Options Can't Be Exercised Early

Nifty and Bank Nifty options are European-style: exercise happens only at expiry. What that means, why it rarely costs holders, and where the catch is.

TrueTrend Research Desk · 23 Sept 2026
Bar chart showing 1,024 channels making random daily up or down Nifty calls: the number with a perfect record halves each day, from 1,024 to 512 to 256, until after 10 days exactly one channel is still 100 percent correct by pure luck
Data & Research

Survivorship Bias: Why Trading-Guru Track Records Mislead You

Let 1,024 channels guess Nifty at random and one will likely be perfect for 10 days. How survivorship bias builds fake gurus, and how to read a record.

TrueTrend Research Desk · 23 Sept 2026
Bar chart comparing an IPO issue price of Rs 100 plus a quoted grey market premium of Rs 40, implying a listing price of Rs 140, against the actual listing price of Rs 112 printed on the exchange
Market Basics

Grey Market Premium (GMP): What It Means and Why It Misleads

GMP Rs 40 on a Rs 100 IPO reads like a promise of a 40% listing pop. It is a quote from an unofficial market with no records, no regulator and no scorecard.

TrueTrend Research Desk · 23 Sept 2026
Two equity curves: an over-tuned rule soars during the backtest window then falls apart on new data, while a simple rule keeps working
Data & Research

Backtesting Basics: Why Most Backtests Lie to Traders

A rule that aced the past can still fail tomorrow. Why backtests flatter, how overfitting fools traders, and the simple checks that separate luck from edge.

TrueTrend Research Desk · 23 Sept 2026
Illustration with synthetic data: an equity index falls in a stress window while gold firms up
Global Markets

Gold vs Equities: How the Safe-Haven Link Really Works

Gold usually rises when Indian equities fall, but not always. What a safe haven really is, when gold cushions a crash, and when it drops with everything else.

TrueTrend Research Desk · 23 Sept 2026
Illustrative bar chart of expiry week showing current-month open interest falling while next-month open interest rises
Options & OI

Futures Rollover Data: How to Read Monthly Rollover Percentages

Rollover % tells you how much open interest moved to the next month at expiry. Here is the formula, a simple worked example, and how to read it right.

TrueTrend Research Desk · 23 Sept 2026
Diagram of the economic cycle as a wave, showing cyclical sectors leading in expansions and defensive sectors holding up in slowdowns
Market Basics

Cyclical vs Defensive Sectors: How the Economy Picks Leaders

Car makers boom and bust with the economy; toothpaste demand barely moves. How cyclical and defensive sectors work, and why market leadership rotates.

TrueTrend Research Desk · 23 Sept 2026
Two synthetic intraday lines with an identical rising opening hour, where one day closes higher and the other closes lower
Data & Research

Does the Opening Hour Decide the Day? What Our Data Shows

Traders say the first hour sets the whole day. We put that folklore beside 90 scored Nifty and Bank Nifty sessions to see what it can and cannot foretell.

TrueTrend Research Desk · 23 Sept 2026
Two-by-two matrix of the four OI quadrants formed by price change and open-interest change
Options & OI

The Four OI Quadrants: Long Buildup to Short Covering

Price up with OI up is long buildup; price up with OI down is short covering. Learn all four OI quadrants and how a strike migrates between them intraday.

TrueTrend Research Desk · 23 Sept 2026
Line chart of a rounding bottom: price curves down into a long rounded base and back up to the rim, with volume shrinking at the base and swelling on the breakout
Technical Analysis

Rounding Bottom Pattern Explained: The Slow U-Turn on a Chart

A saucer-shaped base that forms over months, not days. What a rounding bottom is, how volume mirrors it, the measured-move maths, and where the pattern breaks.

TrueTrend Research Desk · 23 Sept 2026
Worked example showing how On-Balance Volume adds volume on up days and subtracts it on down days
Technical Analysis

On-Balance Volume (OBV) Explained: When Volume Leads Price

OBV keeps a running total of volume — added on up days, subtracted on down days. A beginner's guide to confirmation, divergence, and the honest limits.

TrueTrend Research Desk · 7 Sept 2026
Illustrative chart of implied volatility by strike, with the curve tilted higher on the put side so out-of-the-money puts are priced dearer than out-of-the-money calls
Options & OI

Volatility Smile and Skew: Why OTM Puts Cost More

Two Nifty options, each 500 points from the index, yet the put costs more every day. What the volatility smile and skew are, and why puts carry a fear premium.

TrueTrend Research Desk · 7 Sept 2026
Diagram grouping Indian order types into entry and exit orders, protection orders like stop-loss and SL-M, long-wait GTT orders, and the bracket and cover combos
Market Basics

Order Types in India: Stop-Loss, SL-M, Bracket, Cover & GTT

Stop-loss, SL-M, bracket, cover and GTT orders each solve one problem: acting for you when you are not watching. A plain-English guide with examples.

TrueTrend Research Desk · 7 Sept 2026
Illustrative line chart: a one-week option's time value decays to zero within days while a five-week option at the same strike still holds about ₹220 of value
Options & OI

The Calendar Spread Explained: A Simple Illustrative Example

Same strike, two expiries: how a calendar spread collects the gap between fast and slow time decay, with one simple ₹150 worked example and the honest catch.

TrueTrend Research Desk · 7 Sept 2026
Checklist diagram of the five numbers to check in a quarterly results announcement: revenue, operating profit, operating margin, net profit and EPS
Market Basics

How to Read a Quarterly Results Announcement: A Beginner's Checklist

Every quarter, listed companies publish a report card. Here are the five numbers to check, the traps (one-offs, QoQ noise) and a simple worked example.

TrueTrend Research Desk · 7 Sept 2026
Bar chart of the six currencies inside the dollar index (DXY) with their weights, led by the euro at 57.6%, noting that the Indian rupee is not in the basket
Global Markets

The Dollar Index (DXY): Why a Strong Dollar Hurts India

What the dollar index (DXY) measures, and the three routes — FII flows, a weaker rupee, costlier imports — through which a strong dollar squeezes Indian stocks.

TrueTrend Research Desk · 7 Sept 2026
Illustrative timeline of an NSE trading day showing the normal 09:15 to 15:30 window where bulk deals occur and the two separate 15-minute block deal windows at 08:45 and 14:05
Market Basics

Block Deals and Bulk Deals: Big Money Footprints on NSE

A fund moves 40 lakh shares in one print and the exchange names it after the close. What block and bulk deal disclosures show, and what they never tell you.

TrueTrend Research Desk · 7 Sept 2026
Illustrative bar chart comparing losses of 10% to 90% with the percentage gain each one needs to get back to even, highlighting that a 50% fall needs a 100% gain
Risk & Psychology

Drawdown Math: Why a 50% Loss Needs a 100% Gain Back

Lose 50% and you need 100% just to get back to even. The arithmetic of drawdowns, with round numbers, three simple charts, and what our scored data adds.

TrueTrend Research Desk · 7 Sept 2026
Illustrative chart comparing how time value decays for a weekly and a monthly option, with the steepest fall in the final week before expiry
Options & OI

Weekly vs Monthly Options: Expiry, Theta and Liquidity

Weekly and monthly options are the same contract with different deadlines. How that one difference changes decay, pricing and liquidity, with our scored data.

TrueTrend Research Desk · 7 Sept 2026
Illustrative chart showing all five Ichimoku lines around a price series, with the shaded cloud between Senkou Span A and Senkou Span B labelled
Technical Analysis

Ichimoku Cloud Explained: The 5 Lines and What They Mean

One Japanese indicator draws five lines and a shaded cloud. What each line measures, why two are time-shifted, a worked example, and the honest catch.

TrueTrend Research Desk · 7 Sept 2026
Illustrative cup and handle chart pattern showing the left rim at 100, a rounded base down to 70, the right rim back at 100, a shallow handle, and a breakout above the rim
Technical Analysis

Cup and Handle Pattern Explained for Beginners

The cup and handle is a rounded base, a small dip, then a breakout. Learn the four parts, the volume tell, a worked example, and why so many of them fail.

TrueTrend Research Desk · 7 Sept 2026
Diagram contrasting cash-settled index contracts, where only the rupee profit or loss moves, with physically settled stock contracts, where real shares change hands
Derivatives

Physical Settlement of Stock F&O: What Happens at Expiry

Index F&O ends in cash. Single-stock F&O ends in shares. Who owes what at expiry, a worked example, the expiry-week margin squeeze, and the real cost.

TrueTrend Research Desk · 7 Sept 2026
Line chart comparing two identical Rs 1,00,000 accounts over 60 days: at 2 trades a day costs leave Rs 88,000, at 10 trades a day only Rs 40,000 remains
Risk & Psychology

Overtrading: How to Catch the Silent Account Killer

Overtrading quietly drains accounts through costs and revenge trades. The simple maths of trade frequency, plus early warning signs to catch it in time.

TrueTrend Research Desk · 7 Sept 2026
Illustrative diagram showing that in a rights issue money flows from shareholders into the company and the share count rises, while in a buyback money flows from the company to shareholders and the share count falls
Market Basics

Rights Issues and Buybacks: Corporate Actions Explained

One corporate action asks shareholders for money, the other hands it back. How rights issues and buybacks work, with simple maths and the honest catches.

TrueTrend Research Desk · 7 Sept 2026
Two-panel chart showing a price line above the Money Flow Index oscillating between 0 and 100, with the 80 overbought and 20 oversold zones shaded
Technical Analysis

Money Flow Index (MFI) Explained: The Volume-Weighted RSI

MFI is RSI with volume built in. Learn the 0-100 scale, 80/20 zones, divergence and a worked example, plus the honest limits every beginner should know.

TrueTrend Research Desk · 7 Sept 2026
Two charts showing the same 18% implied volatility sitting near one stock's one-year low and another stock's one-year high
Options & OI

IV Rank vs IV Percentile: Is Volatility Cheap or Expensive?

An IV number alone means nothing. IV rank and IV percentile put today's implied volatility in one-year context — explained with simple worked examples.

TrueTrend Research Desk · 7 Sept 2026
Illustrative five-day price chart showing an intraday trade opened and closed the same day versus a delivery holding held across the week
Market Basics

Intraday vs Delivery Trading: Costs, Margins and Mindset

Per trade, delivery costs about 3x more than intraday — yet intraday traders usually pay far more in a year. A worked ₹1 lakh example explains why.

TrueTrend Research Desk · 7 Sept 2026
Illustrative payoff chart of a butterfly spread: a narrow tent peaking at a ₹140 gain if the index closes at 25,000, with loss capped at the ₹60 paid on both sides
Options & OI

The Butterfly Spread Explained: A Simple Illustrative Example

Three strikes, one tent: how a butterfly spread risks a small ₹60 for a payoff that peaks at the middle strike, with a worked example and the honest catch.

TrueTrend Research Desk · 7 Sept 2026
Waterfall chart showing how ₹100 crore of revenue shrinks to ₹9 crore of net profit after costs, interest and tax
Market Basics

Operating Margin vs Net Margin: Where a Company's Profit Leaks

A company can run a great business and still keep very little of each sale. Here is how operating margin and net margin reveal where the profit leaks.

TrueTrend Research Desk · 7 Sept 2026
Line chart comparing a normal upward-sloping yield curve with an inverted downward-sloping yield curve
Global Markets

Yield Curve Inversion: What It Signals and Why Equity Markets Watch It

When short-term bonds pay more than long-term ones, the yield curve has inverted. What it signals, its track record, and why stock markets watch it.

TrueTrend Research Desk · 7 Sept 2026
Rising wedge chart pattern with two upward-sloping converging trendlines and price breaking down through support
Technical Analysis

Rising and Falling Wedge Patterns Explained

Wedges are narrowing chart patterns where momentum quietly fades. Learn how rising and falling wedges form, which way they usually break, and why.

TrueTrend Research Desk · 7 Sept 2026
Meter of open interest as a percent of MWPL showing normal trading up to 80%, ban entry at 95%, and the exit level at 80%
Options & OI

F&O Ban Period and MWPL Explained: Why Some Stocks Get Locked Out

When open interest in a stock crosses 95% of its MWPL, the stock enters the F&O ban: no fresh positions until OI cools below 80%. Here's how it works.

TrueTrend Research Desk · 7 Sept 2026
Four-step diagram of short selling: borrow 100 shares, sell at Rs 500, buy back at Rs 460, return shares and keep the Rs 4,000 difference.
Market Basics

What Is Short Selling? How It Works in India (SLB)

Short selling means selling shares you don't own, betting the price falls so you can buy them back cheaper. Here's how it works in India, and how SLB fits in.

TrueTrend Research Desk · 7 Sept 2026
Two bar charts showing the same +0.5% index day: a broad rally with 1,600 advancers and a narrow rally with only 700 advancers
Market Basics

Market Breadth: What Advance-Decline Data Says About a Rally

An index can rise while most of its stocks fall. Market breadth — advancers, decliners and the advance-decline line — shows if a rally is broad or narrow.

TrueTrend Research Desk · 7 Sept 2026
Two illustrative charts comparing a pinned market when dealers are long gamma versus an amplified trending market when dealers are short gamma
Options & OI

How Option Sellers' Hedging Moves the Market: Dealer Positioning 101

Option sellers don't just wait for expiry. They hedge all day, and that hedging itself moves the index. Dealer positioning and gamma, explained simply.

TrueTrend Research Desk · 7 Sept 2026
Bar chart showing operating profit of 20 crore rupees covering a 5 crore rupee interest bill four times, an interest coverage ratio of 4
Market Basics

Interest Coverage Ratio: Can a Company Pay Its Interest?

A company can grow sales every year and still struggle to pay its loan interest. The interest coverage ratio shows how big that safety cushion really is.

TrueTrend Research Desk · 7 Sept 2026
Timeline of a US Fed night in Indian time: India closes at 3:30 PM, the Fed decision lands at 11:30 PM, GIFT Nifty reacts overnight, and Nifty opens with a gap at 9:15 AM
Global Markets

US Fed Meetings and Indian Markets: Why the 11:30 PM Decision Matters

Eight nights a year the US Fed sets interest rates at 11:30 PM India time, after our market closes. Here is how that decision reaches Nifty by 9:15 AM.

TrueTrend Research Desk · 7 Sept 2026
Side-by-side comparison of the same price path drawn as a noisy time chart and as a clean renko brick chart
Technical Analysis

Renko Charts Explained: Filtering Time Out of Price

Renko charts print a brick only when price moves a fixed amount and ignore time completely. How bricks form, why traders use them, and what the filter costs.

TrueTrend Research Desk · 7 Sept 2026
Bar chart comparing the cash payout of an exercised Nifty option with STT under the old full-settlement-value rule and the current intrinsic-value rule
Options & OI

STT on Expiry: What Really Happens to Your ITM Options

An ITM option left to expire is exercised automatically and charged STT on its intrinsic value. What it costs now, the old trap and the settlement-price catch.

TrueTrend Research Desk · 7 Sept 2026
Illustrative loss-aversion curve showing that a 5,000 rupee loss feels about twice as intense as a 5,000 rupee gain, with the purchase price as the reference point
Risk & Psychology

The Disposition Effect: Why We Sell Winners Early and Hold Losers Too Long

Most people close a small gain fast and sit on a large loss for months. The psychology behind the disposition effect, the evidence and a worked example.

TrueTrend Research Desk · 7 Sept 2026
Timeline of a Nifty rebalance: data cutoff, announcement weeks in advance, and the effective date when index funds must match the change
Market Basics

Index Rebalancing: What Happens When a Stock Enters or Exits the Nifty

Twice a year the Nifty 50 swaps members. How entries and exits are decided, why index funds must trade the change in one day, and what it does to prices.

TrueTrend Research Desk · 7 Sept 2026
Price chart with a Williams %R panel below it, showing the overbought zone above −20 and the oversold zone below −80
Market Basics

Williams %R Explained: A Fast Overbought-Oversold Gauge

A beginner's guide to Williams %R: what the 0 to −100 scale means, how the 14-day formula works, and why an overbought reading is not a stop sign.

TrueTrend Research Desk · 7 Sept 2026
Payoff diagram of a cash-secured put at expiry with a 95 rupee strike and 2 rupee premium, showing the premium kept above the strike and growing losses below the 93 rupee breakeven
Options & OI

Cash-Secured Put Explained: A Simple Worked Example

A cash-secured put is a promise to purchase a stock at a fixed price, made with the full cash kept ready. A simple ₹95-strike example shows how it works.

TrueTrend Research Desk · 7 Sept 2026
Diagram of the DuPont identity showing ROE as the product of profit margin, asset turnover and leverage, with the sales and assets terms cancelling out
Market Basics

DuPont Analysis: Breaking ROE into Margin, Turnover and Leverage

Two companies can report the same ROE with completely different engines underneath. DuPont analysis splits ROE into margin, turnover and leverage to show which.

TrueTrend Research Desk · 7 Sept 2026