Signing a well-designed mandate is only the beginning. The ongoing work, holding a manager genuinely accountable for ESG delivery over the life of a mandate, is where many relationships fall short. It requires a structured approach to monitoring, clear expectations about what good reporting looks like, and the willingness to have challenging conversations when the evidence suggests the manager is not delivering what was promised.
Monitoring Delivery: Ongoing Oversight
Monitoring a manager requires shifting the focus away from pure short-term returns. If a client constantly acts anxious about quarterly performance, the manager will naturally prioritize short-term numbers over long-term ESG integration.
Instead, the most sophisticated asset owners evaluate managers based on consistency of approach. They look for:
- Did the manager stick to the agreed ESG process, even during market stress?
- Has there been organizational instability or loss of key ESG personnel?
- Is risk being managed appropriately according to the mandate?
The critical question is not "Did you beat the benchmark last quarter?" but rather "Are you still managing the money the way you promised you would?"
Greenwashing as a Monitoring Risk
One specific risk that clients must remain alert to during ongoing monitoring is greenwashing, where a manager overstates the depth or authenticity of their ESG integration. Greenwashing can take many forms: claiming to apply ESG screens that have no meaningful effect on portfolio construction; overstating the rigour of engagement activity; or marketing a fund as having a stronger ESG orientation than its actual holdings warrant.
The regulatory consequences are real. Under the EU's Sustainable Finance Disclosure Regulation (SFDR), funds marketed as Article 9 (the highest ESG classification, requiring a specific sustainable investment objective) have faced significant scrutiny. Several major managers downgraded their Article 9 funds to Article 8, a lower classification, when regulators tightened their guidance on what Article 9 genuinely requires. The reputational damage of such downgrades has been substantial.
For asset owners, the implication is clear: monitoring must go beyond reading a manager's own ESG reports. It requires probing the substance behind the claims, and being willing to act when the evidence does not stack up.
Early Warning Disclosures
Beyond regular review meetings, clients should require fund managers to flag material changes promptly rather than waiting for the next scheduled review. These early warning triggers include:
- Portfolio turnover outside the expected range, with explanation.
- Changes to governance, ownership, or structure at the fund manager.
- Any regulatory investigations or legal proceedings.
- Changes in staff ownership in the fund or fund management firm.
- Changes to conflicts of interest policy.
- Any additional conflicts that arise during the reporting period.
These are structural signals that the investment approach or the organisation itself may have changed, and changes like these can affect ESG delivery just as much as financial delivery.
Example, Reading an early warning signal:
If a fund manager's dedicated ESG research team suddenly experiences high turnover, two or three senior analysts leaving within a short period, this is a structural red flag. The investment process was sold on the basis of a specific team's capabilities. If that team has dissolved, the process that was described in the RFP may no longer exist in practice, regardless of what the marketing materials continue to say. A diligent asset owner treats this as a trigger for an immediate review meeting, not something to note and revisit at the next annual assessment.
Testing Investment Integration in Practice
The review meeting is where clients try to understand what is actually happening inside the portfolio, not just what the manager claims to be doing, but what is really driving investment decisions.
This typically operates on two levels. The first is a formal portfolio-level analysis, reviewing the overall ESG profile of the portfolio relative to the benchmark, looking for outliers, and checking whether ESG-related metrics are consistent with the claimed approach. The second, and more revealing, is a discussion of specific investment decisions: the client identifies holdings that look questionable from an ESG perspective and asks the manager to walk through the reasoning that led to their inclusion.
Think of this like a quality audit at a manufacturing firm. You can review the firm's documented processes (level one). But the most informative test is to pick a random batch of output and examine it in detail, because the batch either conforms to the process or it does not, and that reveals whether the documented process is actually being followed or is merely aspirational.
The client is not necessarily expecting the manager to have avoided all ESG-problematic holdings. Sometimes a genuine ESG investor holds a company with a weak current ESG profile precisely because they have engaged with management and believe the company is on a credible improvement trajectory. What the client is testing is whether the reasoning is genuine, coherent, and consistent with the investment approach they were promised.
Example, Sector-specific probing questions:
Sophisticated asset owners do not ask generic ESG questions. They prepare sector-specific challenges that reveal whether the manager's ESG process is genuinely embedded:
- Property / infrastructure: Is physical climate risk mapped to specific assets in the portfolio, not just at the fund level, but at the building or project level? Has the manager modelled flood risk for assets in coastal locations?
- Financials: What ESG due diligence is applied to a bank's lending decisions? If a bank in the portfolio is a major lender to coal projects, has the manager engaged with the board on that exposure?
- Extractives: What is the manager's exit strategy for companies with significant stranded asset exposure? At what point does the engagement thesis give way to divestment?
These questions are hard to answer with polished generalities. They reveal whether the ESG process is substantive or cosmetic.
Portfolio-Level ESG Analytics Tools
Beyond individual case discussions, clients increasingly use portfolio analytics platforms from ESG research providers to conduct a statistical assessment of the portfolio as a whole. The major providers (tools from firms like MSCI and Morningstar's Sustainalytics, among others) can generate:
- Overall E, S, and G scores for the portfolio, compared to the benchmark.
- Identification of outlier holdings, companies that drag the portfolio's ESG profile significantly below the benchmark.
- ESG performance attribution, an attempt to assess how ESG factors have contributed to or detracted from financial performance.
- Carbon intensity metrics, the portfolio's weighted-average carbon intensity relative to a relevant index.
Example, How a client uses ESG attribution data:
An asset owner reviewing a portfolio receives a report showing that the portfolio's environmental (E) score sits 4.2 percentage points below the benchmark, while its social (S) and governance (G) scores are broadly in line. The client uses this not to conclude immediately that the manager is failing, but as the starting point for a structured conversation. They ask the manager to explain the five largest environmental detractors in the portfolio, walk through the ESG reasoning for each, and describe any engagement activity underway. The conversation reveals whether the E gap reflects a genuine investment thesis (e.g., holding a transitioning company that will improve) or whether the manager's ESG integration simply has blind spots in environmental analysis.
A key caveat: these tools are only as good as the underlying data, which is largely drawn from company disclosures that vary considerably in quality and completeness. A fund manager might legitimately disagree with an external provider's rating of a specific company, based on more direct knowledge from engagement meetings. The analytics provide a basis for a conversation, not a verdict.
Monitoring Engagement and Voting
The other major dimension of ongoing monitoring is stewardship delivery, specifically, whether the manager is engaging with companies and voting in a way that is consistent with the mandate and the client's expectations.
Assessing Voting Quality
Voting tends to get more client attention than engagement because the data is clearer: every share is voted, vote records are published, and it is relatively easy to check whether votes are consistent with the manager's stated policy. Clients typically focus on:
- How does the manager vote in general across the portfolio?
- By what process does the manager reach its voting decisions?
- How did the manager vote on specific controversial resolutions, particularly those where a policy-consistent vote would have meant opposing management?
The most sophisticated clients do not let the manager select which votes to discuss. They identify specific contentious cases themselves and ask the manager to justify their decision. This prevents the manager from curating a presentation that only highlights votes they are comfortable defending.
Assessing Engagement Quality
Engagement is harder to evaluate than voting, for a fundamental reason: its effects are largely invisible, even to the engager. An investor who claims they persuaded a board to adopt a more ambitious climate policy can rarely prove causation, the board made the decision, and correlation is not the same as cause.
This means engagement disclosure must be assessed somewhat differently. Clients look for:
- Evidence that engagement objectives are specific and material to the investee, generic engagements on broad themes add little value.
- Evidence that objectives are set and tracked systematically, not reported selectively.
- Progress against milestones or KPIs, not just activity metrics (number of meetings held) but evidence of movement toward defined outcomes.
- Examples of escalation, cases where initial engagement did not work and the manager moved to stronger measures (public statements, voting against management, divestment).
The limitation of engagement reporting is real: growth in the quantity of engagement does not necessarily mean growth in its quality. With many investors holding thousands of companies, resources are always constrained. The most honest managers will acknowledge which parts of their portfolio receive less engagement attention and explain how they address that gap, through collective action vehicles, proxy advisers, or engagement prioritisation frameworks.
Measurement and Reporting: ESG KPIs and Carbon Metrics
Beyond the qualitative monitoring conversations, investment managers are increasingly expected to produce systematic ESG reporting against measurable indicators.
Core Reporting Elements
Investment firms typically produce annual (and often quarterly) reports covering:
- Their investment processes and how ESG is incorporated.
- The thematic ESG issues they have worked on during the period.
- Case studies on ESG investing decisions or stewardship outcomes.
For firms that are signatories to the PRI, annual reporting against the PRI framework provides an additional layer, benchmarking the firm's responsible investment progress against industry standards and peers.
Disclosure Frameworks: From TCFD to ISSB
ESG reporting has historically lacked standardisation, making cross-manager comparison difficult. Two frameworks have shaped, and are reshaping, that landscape:
TCFD (Task Force on Climate-related Financial Disclosures) established the four-pillar structure (governance, strategy, risk management, metrics and targets) that is now embedded in regulatory requirements across many jurisdictions.
ISSB (International Sustainability Standards Board), established under the IFRS Foundation, has issued IFRS S1 (general sustainability disclosure requirements) and IFRS S2 (climate-related disclosures), which build on TCFD and are designed to become the global baseline for corporate sustainability reporting. As company disclosures improve under ISSB standards, the underlying data available for ESG portfolio assessment improves with it.
The PLSA (Pensions and Lifetime Savings Association) in the UK has developed its own disclosure framework, which helpfully separates two distinct governance questions: first, whether ESG risks have been identified across the portfolio; and second, whether there are robust processes for managing and monitoring those risks over time. A pension fund might disclose well on identification but have thin processes for ongoing monitoring, or vice versa. The distinction matters for beneficiaries trying to assess the quality of their fund's ESG governance.
ESG Key Performance Indicators
Because ESG outcomes are hard to quantify, Key Performance Indicators (KPIs) are essential to track progress. Common KPIs include:
- Portfolio ESG Scores: The overall portfolio score compared to its benchmark.
- Engagement Statistics: Number of meetings held with company boards and the specific issues covered.
- Voting Record: How often the manager voted against company management on ESG issues.
- Principal Adverse Impacts (PAIs): Standardized metrics covering negative impacts like biodiversity loss and water usage.
Weighted Average Carbon Intensity (WACI)
Weighted Average Carbon Intensity
A snapshot of how carbon-intensive the overall portfolio is, normalized by revenue
Portfolio Weight
Each holding's weight as a proportion of total portfolio value
Carbon Intensity
Company i's carbon emissions divided by its revenue
Impact Reporting: Making Metrics Tangible
Abstract carbon metrics are meaningful to investment professionals, but they can be opaque to ultimate beneficiaries, pension fund members, donors to endowments, retail fund investors. Effective impact reporting translates quantitative data into tangible narratives.
Common approaches include expressing portfolio-level emissions reductions as equivalent numbers of cars taken off the road, or reporting clean energy generation in terms of homes powered. A fund manager might report: "The portfolio's avoided emissions this year are equivalent to removing 45,000 cars from UK roads for a year."
These equivalents are simplifications, they do not capture the full complexity of emissions accounting. But they serve an important communication function. They make the connection between an investment choice and a real-world outcome legible to a beneficiary who is not an expert in GHG accounting, and they give trustees a narrative they can use when reporting to members.
ESG Benchmarking
A practical reporting innovation is the application of ESG lenses to existing market benchmarks. Rather than requiring a client to adopt a new benchmark to measure ESG performance, the same benchmark they use for financial performance assessment (say, the MSCI World) can be used as the comparison point for ESG metrics. The fund's ESG profile is measured against the ESG profile of the benchmark universe, creating a directly comparable ESG tracking result.
Alternatively, clients with specific ESG objectives, such as excluding fossil fuel companies, may choose a purpose-built ESG index as their benchmark, where the index itself has been constructed to reflect those exclusions.
The Challenge of ESG Performance Attribution
Performance attribution means understanding how much of a portfolio's financial performance was driven by ESG factors specifically. This matters because it helps clients assess whether the ESG approach is adding or detracting from returns.
For hard ESG constraints, attribution is tractable. If a portfolio excludes tobacco, you can directly measure the drag or boost from that exclusion over any given period. But attribution becomes far harder for soft integration: did the fund outperform because the manager's governance screening identified better-managed companies, or simply because it excluded fossil fuels during a period when oil prices crashed? Both explanations would produce the same numerical result, but they have completely different implications for whether the ESG process is genuinely adding investment value.
Engagement outcomes compound the difficulty further. They take years to materialise, and even when a company improves, isolating the investor's causal contribution from management decisions, market forces, and other investor pressure is essentially impossible.
The ICGN Model Mandate identifies two specific ESG disclosures that fund managers should be required to produce:
1. The manager's assessment of ESG risks embedded in the portfolio. This should describe what ESG risks are present, what the manager has done to identify, monitor, and manage them, and how this assessment relates to the external tools used to assess ESG risk. This is not just a risk register, it is a demonstration of genuine ESG investment credentials.
2. A detailed disclosure of stewardship engagement and voting activity. Critically, the ICGN makes clear that disclosure of voting activity alone does not satisfy the stewardship disclosure requirement. Voting and engagement are distinct activities, and both must be disclosed meaningfully. Simply listing votes without any engagement narrative does not give clients the information they need to assess stewardship quality.
Evolving Standards and the Direction of Travel
ESG reporting is a rapidly evolving field. Regulatory requirements are multiplying, the EU's SFDR has introduced standardised disclosure requirements for financial products, including a detailed set of Principal Adverse Impact indicators. ISSB standards are being adopted or referenced in an expanding set of jurisdictions. Similar frameworks are developing globally.
What is clear is that the direction of travel is toward more specificity, more standardisation, and more accountability in ESG reporting. The days when a fund manager could satisfy a client's ESG reporting requirement with a four-page narrative about their commitment to responsible investment are ending. Clients, and increasingly regulators, want quantified metrics, specific engagement outcomes, and evidence that ESG integration is genuinely embedded in investment decisions rather than layered on top of them.
The ultimate test of ESG reporting is whether it gives the asset owner enough information to make a genuine assessment of whether the manager is delivering on the mandate. Reporting that is comprehensive, honest about limitations, consistent in format, and tied to the specific commitments made in the mandate, rather than generic industry boilerplate, is what allows clients to hold managers to account. That accountability is, ultimately, the whole point.
Key Takeaways
- 1The critical monitoring question is not whether the manager beat the benchmark last quarter, but whether they are still managing money the way they promised - consistency of approach matters more than short-term returns
- 2Greenwashing is a specific monitoring risk - several major managers downgraded Article 9 funds to Article 8 when regulators tightened requirements, exposing gaps between marketing claims and verifiable substance
- 3Early warning triggers like high turnover in ESG research teams, changes in fund manager ownership, or regulatory investigations should prompt immediate review meetings rather than waiting for scheduled assessments
- 4The most revealing test of ESG integration is asking a manager to walk through the reasoning behind specific questionable holdings - it is very hard to fake competence in detailed case-by-case discussion
- 5Growth in the quantity of engagement does not mean growth in its quality - the most honest managers acknowledge which portfolio areas receive less attention and explain how they address that gap
- 6ESG performance attribution remains methodologically challenging: hard constraints like exclusions can be directly measured, but soft integration effects and engagement outcomes are nearly impossible to isolate from market forces and other investor pressure