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The Accelpix blog

From your first candle
to your first order-flow chart.

Written in the order you would actually learn it: what market data is, how the Indian exchanges run their sessions, which platform suits which job, how the serious analysis techniques work, and how to build on top of all of it. No tips, no calls — just the mechanics.

Subject
Level

All articles

Foundations Beginner

What tick-by-tick market data actually means (and why your chart depends on it)

A candle is a summary. Underneath it sit the individual trades that formed it — and whether your vendor recorded them or reconstructed them changes what every indicator on your screen is telling you.

Foundations Beginner

OHLC, one-minute or tick: which data should you backtest on?

Daily bars make a strategy look calm. Minute bars make it look real. Tick data makes it look honest. Here is what changes at each resolution, and when the extra depth is worth paying for.

Foundations Beginner

The market data glossary every Indian trader should know

LTP, VWAP, open interest, bid-ask spread, market depth, circuit limits, settlement price — forty terms explained in the order you will meet them.

Foundations Beginner

Why free market data ends up costing more than paid data

Free feeds are not lying to you deliberately. They are simply built to a different standard — and the four places that standard shows up are the four places it costs you money.

Exchanges Beginner

NSE, BSE, MCX and NCDEX trading hours: the complete session guide

Pre-open, continuous trading, closing session, the post-close window and the commodity evening session — what happens in each, why the timings differ between exchanges, and what it means for your data feed.

Exchanges Intermediate

The call auction session explained: pre-open, illiquid scrips and price discovery

Between 9:00 and 9:15 the market is not trading — it is deciding where to open. Here is how the call auction actually works, why it exists, and why illiquid stocks get their own periodic auctions.

Exchanges Beginner

NSE vs BSE: what actually differs for a trader

Same companies, two exchanges, different liquidity profiles. Where the difference shows up in spreads, in your fills, in arbitrage, and in the data you subscribe to.

Exchanges Intermediate

Trading MCX commodities: contracts, timings and the data you need

Crude, gold, silver, natural gas and base metals trade on a schedule that follows international markets. What that means for your session, your data feed and your contract rolls.

Exchanges Intermediate

NCDEX and agricultural commodities: a data perspective

Agri contracts behave differently from financial ones — thinner books, seasonal patterns and settlement quirks. What a data feed has to get right for them.

Exchanges Intermediate

Splits, bonuses and dividends: how corporate actions break your chart

A 1:5 split turns a ₹2,500 stock into a ₹500 stock overnight. If your vendor adjusts the daily series but not the intraday one, your five-minute chart grows a cliff that looks exactly like a real move.

Exchanges Advanced

Expiry day: what changes in the data, and what breaks

Volumes spike, open interest unwinds, the option chain reprices in seconds and every system that was comfortable on a Tuesday finds out what it is made of.

Platforms Intermediate

NinjaTrader 8 for Indian markets: the complete setup and feature guide

Why NinjaTrader became the order-flow platform of choice, what it does that others do not, and exactly how to connect Indian market data to it.

Platforms Intermediate

AmiBroker and AFL: still the fastest way to test an idea in India

Twenty years old, still unbeaten on speed of iteration. What AFL does well, where it struggles, and how to feed it properly.

Platforms Beginner

Choosing a charting platform: NinjaTrader, AmiBroker, MultiCharts, MetaStock or Excel

Five serious options, five different jobs. An honest comparison of what each is genuinely best at — including when a spreadsheet is the right answer.

Platforms Beginner

Live market data in Excel: what it is good for and what it is not

A spreadsheet is still where most analysis starts. How to get live prices into one, and where you will hit the wall.

Platforms Intermediate

MultiCharts, MetaStock and Advanced GET: the specialists

Three platforms with devoted followings and very specific strengths — strategy testing, classical technical analysis, and Elliott Wave tooling.

Analysis Intermediate

Market Profile and TPO charts: reading the auction, not the price

Market Profile asks a different question from a candlestick chart: not what the price did, but where the market spent its time — and therefore where it agreed on value.

Analysis Advanced

Order flow and footprint charts: what is inside the candle

A footprint chart splits every bar into the volume that traded at the bid and at the ask. It is the closest a retail trader gets to watching the auction happen.

Analysis Intermediate

Volume Profile vs Market Profile: they are not the same thing

One measures time at price, the other measures volume at price. They usually agree — and the moments they disagree are the interesting ones.

Analysis Intermediate

Open interest: the number most Indian traders misread

Rising price with rising OI is not automatically bullish. What open interest actually measures, how it behaves across the expiry cycle, and the four combinations worth knowing.

Analysis Intermediate

VWAP and anchored VWAP: the institutional benchmark, explained

VWAP is not an indicator so much as a scorecard. Understanding who is measured against it explains why price reacts to it.

APIs Intermediate

Live market data APIs in India: REST, WebSocket and what to ask a vendor

If you are building anything — a scanner, a dashboard, a strategy runner — the shape of the API decides the shape of your product. Here is what to look for.

APIs Advanced

Option Greeks APIs: live, historical, and why the difference matters

Delta, gamma, theta and vega move faster than price does. Whether your Greeks were recorded at the time or recalculated afterwards decides whether your study is measuring the market or your own model.

APIs Intermediate

Fundamental data APIs: building a screener that is not wrong

Results, ratios and corporate actions sound like static reference data. They are not — and the ways they change are exactly what breaks a screener quietly.

APIs Advanced

Building a trading application: the six things that break in production

Everything works on a quiet afternoon. The opening burst, the reconnect, the contract roll and the corporate action are where trading software actually fails.

Reading about tick data is not the same as seeing it

Five days of full realtime access on your own platform and your own symbols. Everything described in these articles, running on your screen.