NISM-Series-XV: Research Analyst · Fundamentals of Research

Sources of Data and Information for Research Analysts

Updated 11 October 2026 · Fact-checked

Sources of data are where a research analyst gets facts for a report. **Primary** sources are first-hand, such as management meetings and site visits. **Secondary** sources are already compiled, such as annual reports, exchange filings and industry data. To answer exam questions, classify the source, then judge its reliability: authority, timeliness, independence and verifiability.

Understand Sources of Data and Information for Research

Every research report rests on data. If the data is weak, the conclusion is weak. So the first job of an analyst is to know where facts come from and how far to trust them.

Data is split into two types. Primary data is collected first-hand by the analyst for the purpose at hand. Examples: meeting company management, visiting a plant, talking to dealers, suppliers and customers, or running a survey. Secondary data was created by someone else for another purpose and is used by the analyst. Examples: annual reports, quarterly results, exchange filings, regulator publications, industry association data, government statistics and third-party databases.

For listed companies, the most important secondary sources are the company's own disclosures. These include the annual report (financial statements, auditor's report, directors' report, management discussion and analysis, corporate governance report), quarterly financial results, the shareholding pattern, and announcements filed with the stock exchanges under the listing rules. Offer documents such as the prospectus or draft red herring prospectus are also useful. Regulators and bodies such as SEBI, RBI, the exchanges and government ministries publish data on markets, the economy and sectors. Industry associations publish sector volumes and prices.

Not all sources are equally reliable. Audited and statutory filings carry legal accountability, so they are usually more dependable than press reports, rumours or social media. Management commentary is useful but is the view of an interested party, so it must be checked against numbers. Good analysts prefer the original source over a reproduction, check the date, and cross-verify important facts with a second independent source.

Primary and secondary data work together. Secondary data gives the base and history. Primary data adds insight that documents do not show, such as how a product is really selling. In an exam, ask two questions: who created this data, and for what purpose?

Key formulas to remember

Primary data: Primary data = first-hand data collected by the analyst; Examples: management meetings, plant visits, channel checks, surveys.
Secondary data: Secondary data = data already compiled by others; Examples: annual reports, exchange filings, industry association data, government statistics, databases.
Reliability checklist: Reliability = authority + timeliness + independence + verifiability; Prefer audited, statutory, original and recent sources. Cross-check key facts.
Source hierarchy (rule of thumb): Audited/statutory filings > management statements > media and unverified sources; A guide to judging reliability, not a fixed legal rule.

How to solve Sources of Data and Information for Research questions

Use this method for any question on sources of data and information.

1Read the question and find what is asked: classify a source, pick the best source, or judge reliability.
2Ask who created the data. If the analyst collected it first-hand, it is primary. If someone else compiled it, it is secondary.
3Match the need to the source. Financial performance points to audited statements and results. Ownership points to the shareholding pattern. Strategy and outlook point to management discussion and meetings. Sector size points to industry data.
4Check authority: is it a statutory, regulator, exchange or audited source?
5Check timeliness and independence: is it the latest, and is the provider free of conflict?
6Check verifiability: can the figure be confirmed from another independent source?
7Eliminate options that rely on rumours, unverified tips or a single biased source, then choose the best remaining option.

Quickest way: Who made it, and is it checkable?

When to use it: Use this for one-line MCQs asking you to classify or rank sources.

First-hand by the analyst means primary. Anything already published means secondary.
If asked for the most reliable source, pick the audited or statutory filing or the original regulator or exchange publication.
If a source is unverified, anonymous or conflicted, treat it as weakest.
If the question says primary data is needed, look for meetings, visits, surveys or channel checks.

Common mistakes in Sources of Data and Information for Research

Calling the annual report primary data because it comes from the company itself.
Students link primary with the original source of the facts.
Fix: Primary means collected first-hand by the analyst. An annual report already compiled and published is secondary for the analyst.
Treating management statements as fully reliable.
Management knows the business best, so students assume it is neutral.
Fix: Management is an interested party. Use its views as input and verify them against filed and audited data.
Preferring media reports over exchange filings because they are faster.
News feels current and easy to read.
Fix: Exchange filings and statutory documents are the authoritative record. Use news to spot leads, then confirm in the filing.
Ignoring the date of the data.
Students focus on the type of source, not its currency.
Fix: Always check that the data is recent. Old figures may not reflect the current position.
Relying on one source for a key figure.
It saves time and the figure looks official.
Fix: Cross-verify important numbers with at least one independent source before using them in a report.

Worked examples

Example 1

A research analyst visits a company's factory and speaks to its plant head and distributors to understand capacity utilisation. Which type of data is this, and how should the analyst treat it?
A) Secondary data, fully reliable
B) Primary data, to be cross-verified with filings
C) Secondary data, unreliable
D) Primary data, needs no verification

Show the solution

Who collected the information? The analyst did, first-hand, through a visit and conversations.
So the data is primary. This removes A and C.
Statements from plant staff and distributors are interested or partial views.
Good practice is to cross-check them against filed data such as reported volumes and capacity in the annual report. This removes D.

Answer: B) Primary data, to be cross-verified with filings.

Example 2

An analyst wants to judge how much of a company is held by promoters and whether promoter holding has changed recently. Which source is the most suitable and reliable?
A) A news article quoting an unnamed broker
B) The shareholding pattern filed by the company with the stock exchanges
C) A social media post by a retail investor
D) The analyst's own estimate based on trading volumes

Show the solution

The need is ownership data, which a listed company must disclose in its shareholding pattern.
This is a statutory filing made with the exchanges, so it has authority and can be verified.
A, C and D are unnamed, unverified or estimated, so they are weak.
The filing also gives a history, so changes across periods can be compared.

Answer: B) The shareholding pattern filed with the stock exchanges.

Exam tips

Expect classification questions: remember primary is first-hand by the analyst and secondary is compiled by others.
When asked for the most reliable source, choose audited, statutory or exchange-filed documents over media or hearsay.
Match the need to the document: results for performance, shareholding pattern for ownership, management discussion for outlook.
Watch for options that treat management views as fully independent. They are usually the trap.
With negative marking, eliminate unverified or unnamed sources first, then choose between the remaining options.

Practice questions from Fundamentals of Research

Sources of Data and Information for Research in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Sources of Data and Information for Research: frequently asked questions

What is the difference between primary and secondary data in research?

Primary data is collected first-hand by the analyst, for example through management meetings or site visits. Secondary data is already compiled by others, such as annual reports, exchange filings and industry statistics.

Is the annual report a primary or secondary source for an analyst?

It is a secondary source because the company prepared and published it before the analyst used it. It is still a highly authoritative source, as it contains audited financial statements.

Which sources are most reliable for equity research?

Audited financial statements, statutory filings and disclosures made to stock exchanges are the most dependable. Regulator and government publications are also strong. Cross-check any important figure with another independent source.

How should an analyst treat management interactions?

Treat them as a valuable primary source for strategy and outlook. Management is an interested party, so verify its claims against filed data and independent evidence.