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The investment research process

Build an investment research process that connects hypotheses, source selection, expert insights and evidence review to a clear investment decision.

From an initial hypothesis to an evidence based decision

Guides 30 Oct 2026
Global

An investment team can collect a substantial amount of research and still struggle to explain which evidence supports its thesis. The difficulty is often deciding what needs to be known, which sources can answer the question and when the evidence is strong enough to act on.

A structured investment research process connects those decisions. It helps analysts prioritise work, investigate contradictory information and show an investment committee (IC) how they reached a view.

This guide sets out a practical workflow for institutional research teams. It focuses on the decisions between research stages and shows where Third Bridge's expert insights can contribute.

Define the decision before collecting more information

The first step is to state the decision the research must inform. Screening an unfamiliar company requires a different depth of work from underwriting a loan or reassessing an established equity position.

Write down the decision, deadline and unresolved questions. Identify the assumptions that would materially change the outcome if they proved wrong.

For an equity analyst, the issue might be whether a company's margin recovery is sustainable. For a direct lender, it might be whether customer demand can support repayment under weaker conditions. Both involve company research, but they require different evidence and place different weight on downside scenarios.

Keep the research scope tied to the decision as new information arrives. An interesting finding only earns more work if it affects the question the team needs to answer.

Build a baseline and record its limitations

Review the available company documents, financial information, industry material and relevant existing research. Use this stage to understand the business model and establish what is already known.

Capture the source, publication date and scope of important claims. Distinguish management's position from external evidence and the team's own assumptions. Two reports repeating the same company statement do not provide two independent confirmations.

Existing expert interviews can add operational context to that baseline. Third Bridge's Library includes interviews led by investors and in-house sector analysts, giving researchers access to perspectives they can assess alongside documentary sources.

For a broader explanation of research methods, see our guide to primary research for investors and consultants. Here, the task is to decide which method belongs at each point in the investigation.

Translate the thesis into testable questions

A thesis such as improving competitive position needs to be broken into observable mechanisms. Does the company win more tenders, retain customers more effectively, or benefit from a change in purchasing criteria?

For each assumption, define the evidence that would increase confidence and the evidence that would weaken it. Prioritise questions according to their importance to the decision and the uncertainty around them.

An illustrative research plan might look like this:

AssumptionQuestion to testRelevant evidence
Pricing supports marginsHow do buyers respond to increases?Realised pricing data and customer perspectives
Growth reflects adoptionIs deployment following purchase interest?Company disclosures and relevant channel experience
Customers are resilientWhat makes spending vulnerable?Customer mix and purchasing behaviour
A constraint will easeWhat must change operationally?Operating data and specialist experience

The plan should make it possible to explain why the next research activity matters. It also provides a basis for stopping work on questions that no longer affect the decision.

Match each evidence gap to an appropriate source

Select sources according to what they can reasonably know. Company records may be needed to establish an actual financial result. A customer may explain purchasing criteria. An industry operator may describe the practical constraints behind a production or service model.

When using expert calls to test desk research, specify the role, market exposure, relevant period, and question. Third Bridge's expert call service sources experts against a client's research needs, allowing teams to seek experience relevant to the gap they have identified.

Avoid asking an expert to resolve questions outside their knowledge or permitted scope. An experienced former executive can provide valuable historical context while lacking visibility into present conditions. Keep those distinctions in the research record.

Where the issue is how prevalent a behaviour is, consider whether a survey with an appropriate sample is required. A small group of interviews can explain a mechanism without establishing its frequency across an entire market.

An illustrative investigation into margin recovery

Consider a hypothetical analyst reviewing a services company whose investment case assumes margins improve as demand recovers. The starting material explains the forecast, but the analyst needs to understand whether higher revenue would translate into better profitability.

Existing sector interviews could help identify staffing and utilization as questions to investigate. The analyst can then ask whether different service lines face different constraints and which operating conditions would enable more work to be delivered with existing capacity.

A focused Third Bridge expert brief could seek people with relevant experience of service delivery and workforce planning. The analyst would compare their explanations with company disclosures and the assumptions in the model.

The research might leave one assumption better supported and another unresolved. That is a useful outcome if the team can explain which further evidence is needed. The example illustrates a process; it does not describe a client result or imply a particular investment conclusion.

Use AI to organise evidence and expose questions

AI tools for investment research can assist with finding relevant passages, grouping recurring themes and comparing accounts across research material. The analyst still needs to assess whether the sources are current, relevant and sufficiently independent.

Useful requests focus on the evidence: identify comments about procurement delays, separate observations by customer segment, or surface passages that challenge a stated assumption. Review the original passages before relying on the synthesis.

Third Bridge's MCP enables access to its expert transcript content through compatible AI tools, subject to access permissions. It offers a route to use that research within an existing AI workflow.

Preserve distinctions between observation, estimate and interpretation. A summary that removes uncertainty can make the evidence appear stronger than the underlying interviews support.

Reconcile disagreement before writing the recommendation

Conflicting accounts can reveal an important difference in geography, timing or customer exposure. Before choosing one account over another, establish what each person observed and whether they are answering the same question.

Maintain a record of evidence supporting and challenging the thesis. Where a material question remains unresolved, explain its effect on confidence and the decision. Do not hide the gap inside a blended conclusion.

The investment memorandum should connect each major conclusion to its source and analytical implication. Readers should be able to see which assumptions changed, why they changed and what remains uncertain.

Carry the research questions into monitoring

For an existing investment, identify the developments that would require the thesis to be revisited. These could include a change in customer behaviour, a new competitive offering or evidence that an operating constraint persists.

Specify what the team will monitor and who will review it. Keep monitoring tied to the original drivers of the case, while allowing new information to change the questions.

A public equity team may revisit evidence around earnings or other catalysts. A lender may focus on developments affecting repayment capacity. The cadence should reflect the strategy and the information available.

Put expert evidence to work in your research process

Third Bridge can support the transition from initial context to targeted investigation. Existing interviews help frame the questions, while relevant expert conversations provide a way to examine the operating issues behind the thesis.

Bring a company, sector, or research question to the discussion. Request a trial to explore how Third Bridge's insights fit into your team's investment research process.

Frequently asked questions

What are the main stages of investment research?

A practical process defines the decision, establishes a baseline, develops testable questions, gathers relevant evidence, assesses conflicting findings and produces a recommendation. Monitoring then revisits the assumptions as conditions change.

When should analysts use expert calls?

When a material question requires relevant human experience and the team can define the perspective it needs. Existing research can help narrow the brief so the conversation addresses an unresolved issue.

How do teams know when they have enough research?

Assess whether the decision-critical questions have adequate evidence and whether the remaining uncertainty is explicit. The volume of material collected is less informative than its relevance and the consequences of any unresolved gaps.