Choosing a stock market data provider in India decides more of your floor’s month than almost any other purchase. The right file fills the day with real conversations; the wrong one burns a week of calling on numbers that ring out, wrong names and people your competitor dialled yesterday. This guide is written for SEBI-registered advisers, research analysts, brokers and sub-brokers who buy traders data for telecalling. It covers the six questions every buyer should ask, how data quality is actually measured, what drives price, the compliance checks you cannot skip, and a 20-point checklist you can use on any supplier — including us.
In short: a good stock market data provider replaces invalid numbers in writing, cuts data by segment and state, can tell you how and when the data was collected, sells each cut to you fresh, delivers in hours, and is comfortable with you scrubbing against DND and checking consent before you dial.
What a stock market data provider actually sells
In the advisory and broking world, “stock market data provider” means a supplier of contact data of people who trade or invest — not live price feeds or market data APIs (those come from exchange-licensed vendors). The product is a file of traders or investors, usually with a mobile number and some combination of name, state, city and email, cut by the segment they trade: intraday, F&O and options, cash market, MCX commodity, currency and forex, or HNI investors.
Two things make one file worth more than another: whether the people in it are reachable and relevant to your package, and whether anybody else is dialling them at the same time. Everything else — price per record, format, speed — follows from those two.
The six questions to ask before you buy
1. What exactly do you replace — and what don’t you?
A supplier who says “we replace everything” is telling you they replace nothing, because nobody can replace a number that simply doesn’t pick up. The honest answer has two halves: replaced — invalid numbers, switched-off numbers and wrong numbers, within a stated window (ours is 15 working days from delivery, replacements out within 1–2 working days); not replaced — numbers that don’t pick up, which your team re-dials. If a supplier won’t put the second half in writing, expect an argument later.
2. Is the data cut by segment, or is it just “stock market traders”?
The single biggest reason a floor’s follow-up ratio disappoints is a mismatch between the pitch and the person. An options package dialled to cash-market investors underperforms even with perfect numbers. Ask whether the supplier can cut intraday traders from F&O and option traders, share market investors from MCX traders — and whether they can explain how each segment is defined. “Stock market traders” as a single bucket is a warning sign.
3. Was the batch dialled before it was sold?
This is the question almost nobody asks and almost no supplier can answer. A batch that has been dialled by the supplier’s own floor and graded on how it responded is a known quantity: you are buying a follow-up ratio, not a promise. A batch that has never been dialled is a lottery. Ask for the grade, ask what it means, and ask which grade matches the ratio your floor already achieves — a good supplier will steer you away from the most expensive grade if a cheaper one fits.
4. Where does the data come from?
For a SEBI-registered research analyst or investment adviser this is a compliance question, not a curiosity. The acceptable answers are specific: broker tie-ups, the supplier’s own advertising campaigns, search traffic to their own sites, opt-in channels. The unacceptable answer is a shrug. Either way, scrub against DND before dialling — a serious supplier will tell you to, unprompted.
5. Which formats, and how fast?
Three formats cover almost every floor: number only for high-volume dialling; name + number + state so the opening line lands and the caller’s language matches; and name + number + email for teams that follow up on WhatsApp or email. Delivery should be measured in hours after payment, not days. Ours is 1–2 hours, in Excel or CSV.
6. Will the same file be sold to my competitor next week?
Ask it plainly. Every order should be a fresh cut for you. If the supplier hesitates, you have your answer — and you also have the explanation for why “everyone has already called these people” comes up on your floor.
How to judge data quality (before and after you pay)
Suppliers will all say their data is “verified” and “fresh”. These are the measures that actually separate files, and how to check each one.
| Measure | What it means | How to check it |
|---|---|---|
| Connect rate | Share of numbers that ring and are in service | Dial a small first order fully and count invalid / switched-off / wrong numbers |
| Relevance | Share of people who actually trade the segment you sell | Ask the first question on every call: “Do you trade options / intraday / MCX?” |
| Follow-up ratio | Conversations that agree to a second call, demo or trial of your service | Compare against the ratio your floor gets from your own inbound leads |
| Duplicates | The same number appearing more than once, or numbers you already have | De-duplicate on the last 10 digits against your CRM before dialling |
| Freshness | How recently the person showed trading activity or interest | Ask when and how each cut was collected; older data rings out more and remembers your name less |
| Exclusivity | Whether the same cut is going to other floors | Ask in writing; watch for prospects saying “three companies called me today” |
A useful rule: judge a supplier on cost per good conversation, not cost per record. A cheaper file with half the connect rate and a quarter of the relevance is the expensive one.
What drives the price of traders data
Prices across the market vary widely, and the variation is mostly explained by a handful of factors. Knowing them lets you compare quotes fairly.
- Segment. Narrow, high-intent segments (active F&O traders, HNI investors) cost more than broad investor lists.
- Fields. Number-only is the cheapest; each added field (name, state, email) adds cost and usually adds usefulness.
- Grading. A batch that has been dialled and graded by the supplier costs more to produce and is worth more to you.
- Freshness and source. Data from recent campaigns and opt-in channels costs more than recycled lists.
- Geography. State and city cuts that match your callers’ languages may be priced differently from Pan-India files.
- Volume. Larger orders generally lower the per-record price — but only buy volume once a small order has proved the ratio.
- Replacement terms. A supplier who replaces invalid numbers in writing is pricing that commitment in; one who doesn’t is pushing the risk onto you.
Be wary of anything offered “free” or as an unlimited sample. Contact data costs money to collect, check and deliver; a free list is usually an old or widely-sold one.
Compliance checks you cannot skip
Buying data is legal; how you collect, store and dial it is regulated. These are the checks a responsible floor runs. This is general information, not legal advice — confirm specifics with your compliance officer.
- DND scrubbing. Under TRAI’s telecom commercial communication regulations, promotional calls to numbers registered on the National Customer Preference Register (DND) are restricted. Scrub every file before dialling. Our DND scrubbing guide for SEBI advisory firms explains the process.
- Consent and the DPDP Act. The Digital Personal Data Protection Act, 2023 sets rules for processing personal data, including purpose and consent. Ask suppliers how data was collected and keep that answer on file.
- SEBI conduct rules. Registered advisers and research analysts must follow SEBI’s rules on how they communicate with clients and what they may promise. A good file does not change what your callers are allowed to say.
- Data security. Limit who on the floor can export files, and delete data you no longer use.
Supplier checklist: 20 points
- Replacement terms are in writing, with a window in days.
- The supplier says clearly what is not replaced.
- Data is cut by segment (intraday, F&O, cash, MCX, currency, HNI).
- Data can be cut by state or city.
- The supplier can explain how each segment is defined.
- Batches are dialled and graded before sale, or the supplier says honestly that they are not.
- The source of the data is named specifically.
- The supplier tells you to scrub against DND.
- Each order is a fresh cut, not a shared list.
- Formats offered match how your team follows up.
- Delivery time is stated in hours.
- Files arrive in Excel or CSV with consistent columns.
- Numbers are 10-digit and de-duplicated.
- A small first order is welcomed, not discouraged.
- Pricing is explained by segment, fields and grade.
- No “free” lists or unlimited samples are pushed.
- There is a named contact who answers after the sale.
- The supplier has a business address, GST registration and a working website.
- Replacement requests are acknowledged within a working day.
- You measure the first order on your own floor before scaling.
What a good first order looks like
Not a large one. Take one state and one segment that match your package and your callers’ languages, dial it properly for a week, and measure the follow-up ratio on your own floor. Then widen — more states, a second segment, a higher grade if the ticket size justifies it. A supplier who pushes you to start big is optimising for their invoice, not your ratio.
Frequently asked questions
Who is the best stock market data provider in India?
The best provider for you is the one whose data produces the highest follow-up ratio on your floor at an acceptable cost per conversation. Use the six questions and the checklist above, start with a small order, and compare suppliers on results rather than claims.
What is the difference between a stock market data provider and a market data vendor?
A market data vendor supplies prices, charts and exchange feeds. A stock market data provider, in the sense used by advisory firms and brokers, supplies contact data of traders and investors for telecalling and marketing.
How often should traders data be refreshed?
Buy in smaller, regular orders rather than one large file. Data loses value as people change numbers, stop trading or get dialled by many floors, so recent cuts consistently outperform old ones.
Do you give free samples?
No. We don’t offer free trials or free samples, because every cut is fresh and sold once. Start with a small paid order in one segment and state instead.
How quickly is data delivered?
Within 1–2 hours of payment confirmation, in Excel or CSV.
What happens if numbers are invalid?
Invalid, switched-off and wrong numbers reported within 15 working days of delivery are checked and replaced within 1–2 working days. Numbers that don’t pick up are not replaced and should be re-dialled.
Can I buy data for a specific state or city?
Yes. See the traders database catalogue for every state and city we supply.
Next step
If you want to walk through these questions for your own floor, the advisory firms page and the brokers and sub-brokers page set out how we answer each one, and the traders database catalogue lists every segment and state. Or contact us for the current rate card.
References: SEBI · TRAI · MeitY (DPDP Act) · NSE India