Guides and explainers on Open Interest, option chains, gamma exposure (GEX), volatility, FII/DII activity, and Indian index & stock F&O analysis — written for traders learning to read the data.
By OIData Editorial Team ·
The market publishes its own forecast of how far it will travel, and it costs one addition to read: the at-the-money straddle. What it means and how to use it.
By OIData Editorial Team ·
Reading buildup on one stock is easy. Ranking 200 of them to find where positions are actually being built is where a screener earns its keep.
By OIData Editorial Team ·
Gamma exposure maps where option-hedging pressure sits on the chain — and whether that hedging will absorb today's moves or amplify them. Here's how to read it.
By OIData Editorial Team ·
A closed exchange is not a neutral day for an options position. Expiry shifts, theta keeps running, and some holidays close clearing but not trading.
By OIData Editorial Team ·
The gamma flip is the index level where net gamma exposure crosses zero — the boundary between a market that absorbs moves and one that amplifies them.
By OIData Editorial Team ·
India has no public trade tape, but per-strike volume still gives away where attention suddenly arrives. How volume bursts are measured, and how to read them.
By OIData Editorial Team ·
Nine conditions worth being told about rather than watching for, what each one actually fires on, and how to set thresholds that don't drown you in noise.
By OIData Editorial Team ·
Negative-gamma names move differently: hedging chases price instead of absorbing it. How to screen 200 F&O stocks for that condition and what to do with it.
By OIData Editorial Team ·
A 0-100 fear and greed gauge for Indian markets, built from seven sentiment inputs each normalised against its own history. What it measures, and what it cannot.
By OIData Editorial Team ·
Futures OI gives the cleanest read on directional positioning. Learn to combine it with price for buildup signals, read the basis, and interpret rollovers around expiry.
By OIData Editorial Team ·
PCR sums up option positioning in a single number, but it's widely misread. Learn the formula, why it's often contrarian, and why fixed thresholds are a trap.
By OIData Editorial Team ·
NIFTY and BANK NIFTY look similar but trade differently. Learn why BANK NIFTY is more volatile, how their OI walls behave, and how to adjust your reads for each.
By OIData Editorial Team ·
A plain-English glossary of the futures and options terms you'll meet on the option chain and in OI analysis — from ATM to vega, with links to deeper guides.
By OIData Editorial Team ·
Open interest is powerful but easy to misread. Here are the ten mistakes that trip up most traders — and how to avoid each one.
By OIData Editorial Team ·
GIFT Nifty trades when Indian markets are shut, giving an early read on how the NIFTY may open. Learn what it is, how to use the implied open, and why the gap can fade.
By OIData Editorial Team ·
Expiry day has its own physics — brutal time decay, OI walls that act as magnets, and gamma risk. Here's how to read open interest on expiry and the traps to avoid.
By OIData Editorial Team ·
Straddles and strangles let you trade the size of a move instead of its direction. Learn how each is built, when to go long vs short, and the risks that catch people out.
By OIData Editorial Team ·
Implied volatility is the market's forecast of future movement, baked into option prices. Learn what drives it, how India VIX fits in, and why IV crush catches buyers out.
By OIData Editorial Team ·
NSE breaks F&O open interest into Client, Pro, FII and DII. Learn what each category is, why Pro and FII are watched as "smart money," and how to read the data without falling for myths.
By OIData Editorial Team ·
FIIs and DIIs move the Indian market. Learn what the daily buy/sell figures mean, why FII and DII flows often pull in opposite directions, and how to read them without overreacting.
By OIData Editorial Team ·
Heavy option open interest marks the levels the market is defending. Learn how to turn the OI on a chain into practical support and resistance — and how to spot a break.
By OIData Editorial Team ·
Max pain is the strike where option buyers lose the most at expiry. Learn how it's calculated, why price often drifts toward it, and why it's a tendency — not a rule.
By OIData Editorial Team ·
Combine price direction with the change in open interest and you get four signals that describe what the market is actually doing. Here's how to read all four.
By OIData Editorial Team ·
The option chain looks intimidating but follows a simple layout. Learn the columns that matter, how to spot support and resistance from OI, and a quick daily routine.
By OIData Editorial Team ·
Volume measures activity; open interest measures commitment. Confusing the two leads to bad reads. Here's how they differ and how to use them together.
By OIData Editorial Team ·
Open interest is the number of derivative contracts still open in the market. Here's what it really measures, how it changes trade by trade, and why it matters.
