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Boston's 50 Largest Listed Companies: A Sustainability Snapshot for Climate Week

Boston was home for 9 years. Never became a Patriots fan, making me significantly less cool in the office, so I tried to add value elsewhere. The city's investment management ecosystem let me hone skills in ESG, impact, and risk, though I evaluated ESG differently then. Despite being US-based, analysis featured more prominently in the global, international, and Emerging Market investment products I focused on, and was a law of averages (fund characteristics, conviction, etc.). Now with these years of the corporate perspective under my belt, I'm excited to return to Boston with corporate sustainability first on the agenda.

Boston is also home to many publicly listed companies, so naturally as a channel for my excitement, I decided to assess data on the 50 largest companies based in the Boston area,  comprising a combined market cap of roughly $1.6 trillion. Their sustainability disclosures are increasingly under scrutiny from CSRD, from investors, stakeholders like CDP, and from supply-chain partners pushing on Scope 3.

Given what has recently been released (another wave of ESRS and CDP news), I decided to pick out basic datapoints regarding each of the lucky seven: CSRD alignment, CDP participation, and a light brush-up on what they’re saying about Scope 3.

Industry Breakdown

Boston's Top-50 listed economy is dominated by knowledge-intensive sectors. Life Sciences & Healthcare leads on market capitalisation, while Technology & Semiconductors leads on company count. The top three sectors account for roughly two-thirds of companies and three-quarters of total market value. This is key for assessing patterns and likely supply chain similarities impacting their regulatory ESG requirements.

Industry Breakdown

Okay, so even with a bit of help from AI, analyzing all 50 companies would take quite a bit of time, so I’ve focused on the largest seven in the Boston area to assess them in the three categories mentioned, CSRD mentions, CDP participation, and Scope 3 planning.

 

1. GE Vernova (GEV); $270.3bn

CSRD: Published its first standalone Sustainability Report in June 2025 after its spin-off from GE. No ESRS-aligned report yet, but its emissions software publicly markets itself as helping customers produce CSRD-aligned reports; a strong tell that internal readiness work is underway. EU operations across Gas Power, Wind, and Grid Solutions place several subsidiaries in scope.

CDP score: Did not participate. As a newly independent company, GEV's 2025 cycle would have been its first independent submission. Unclear what the company might do going forward, but General Electric Company, where it spun out from, received a B in Climate Change and a C in Water.

Scope 3: The largest absolute footprint of the seven, roughly 796 Mt CO₂e in 2024, dominated by Category 11 (lifetime combustion of installed gas turbines). 2050 net-zero ambition includes Scope 3 but is not SBTi-validated.

Link to Sustainability Page

2. Thermo Fisher Scientific (TMO); $186.5bn

CSRD: One of the more advanced of the seven, going back as far as 2024. Publicly disclosed aligned data (via an EY case study) stating actively preparing CSRD-compliant reporting, completing a double materiality assessment and building ESRS infrastructure. EU manufacturing in Germany, the UK, Lithuania, and the Netherlands keeps it directly in scope.

CDP score: 2025 Climate Change score of B, down from A- the previous year. They also received a B- in Water, consistent with their 2024 score.

Scope 3: SBTi-validated near-term and net-zero targets, including a 90% absolute Scope 3 reduction by 2050 (vs. 2021). Cat 1 dominates at ~58%. Flagship target: 90% of relevant suppliers set their own science-based targets by 2027.

Link to Sustainability Page

3. TJX Companies (TJX); $177.7bn

CSRD: No explicit CSRD readiness language in the 2025 CR Report or 2025 CDP submission, but TK Maxx operations across the UK, Germany, Austria, Poland, the Netherlands, and Ireland almost certainly bring it into scope. Effectively in readiness mode.

CDP score: Received a B in Climate Change, but did not respond to Forests and Water. Getting the B was an increase vs. what was received in 2024, a B-.

Scope 3: Early-stage coverage of Scope 3 data. 55% absolute Scope 1+2 reduction by FY2030 and a 100% renewable-electricity goal, but Scope 3 is in discovery. No SBTi-validated Scope 3 target yet.

Link to Sustainability Page

4. Analog Devices (ADI); $172.7bn

CSRD: ADI's Limerick, Ireland operation (1,200+ staff plus a €630M wafer-fab expansion) places subsidiary directly under CSRD. The 2024 ESG Report is not ESRS-aligned and no double materiality results are public; readiness mode.

CDP score: Submitted a response and chose not to be scored.

Scope 3: Net-zero across all scopes by 2050 (committed 2021), with interim 50% Scope 1+2 by 2030, 100% renewable electricity by 2025, and 67% of Cat 1 suppliers (by spend) with SBTs by 2025. Not SBTi-validated.

Link to Sustainability Page

5. Vertex Pharmaceuticals (VRTX); $112.2bn

CSRD: Public materials still lean on a generic GHG/water/waste framework rather than ESRS. EU offices in Switzerland, the UK, Ireland, Germany, and France likely bring it into scope, but no readiness language, scoping conclusions or ESRS timeline has been disclosed.

CDP score: 2025 Climate Change and Water: B (down from A- on Climate Change in 2024, but improvements on Water, up from a B- the prior year).

Scope 3: The clearest gap of the seven. Vertex's 42% reduction target by 2032 covers Scope 1 and  2 only; no broadly disclosed Scope 3 inventory or target, despite purchased goods and CDMOs typically dominating pharma value-chain footprints.

Link to Sustainability Page

6. Boston Scientific (BSX); $96.3bn

CSRD: Materially exposed via its Irish complexes (including recently the site of a €100M carbon-neutral manufacturing investment). 2024 disclosures still rely on GRI/SASB/TCFD; no standalone CSRD-aligned report yet, but readiness is implied by the scale of its Irish footprint.

CDP score: B for 2025 Climate Change, consistent with 2024 scoring.

Scope 3: Most  advanced of the seven. SBTi-validated net-zero (2022); among the first in Healthcare Equipment & Supplies; including a 55% Scope 3 intensity reduction by 2030. Supplier engagements showed ~80% of Scope 3 sits with a small supplier group.

Link to Sustainability Page

7. American Tower (AMT); $83.6bn

CSRD: Direct exposure has shrunk, upon selling off much of it’s European business. The 2024 Sustainability Executive Report (July 2025) still uses GRI/SASB/TCFD; no ESRS-aligned report or double materiality assessment published. Likely in monitoring mode.

CDP score: 2025 Climate and Water scores are at a D and a C- respectively, an improvement from the previous year, where they did not respond to Water.

Scope 3: SBTi-approved targets (2021): ≥40% Scope 1+2 reduction by 2035 (vs. 2019) and a separate 40% Scope 3 supply-chain reduction. Tower-site electricity is the biggest driver; Scope 3 weights to purchased goods/services and capital goods.

Link to Sustainability Page

 

Want the Underlying Data?

We've packaged the full dataset; all fifty of the assessed listed companies, their sustainability report links, CSRD status, sector and market cap, into a single fact-checked (not just AI) spreadsheet. It's a useful starting point for benchmarking, supplier outreach or peer analysis.

The spreadsheet is free for anyone who books an introductory call with Nossa Data. We'll walk you through the dataset and discuss how our platform can support your own sustainability reporting workflow. Book a call at our book a meeting page and mention this article.

 

Join Nossa Data in Boston

At Nossa Data we help listed companies turn this exact picture into action - clean sustainability reporting, audit-ready data and CSRD-aligned disclosures, without burning out your team. Our software and analyst services are already trusted by global issuers preparing for ESRS, ISSB, and SEC climate rules.

We will be in Boston shortly to host an informal drinks evening for sustainability, IR, legal, and finance leads at listed companies in the area. If you would like to compare notes on reporting, CSRD readiness or just enjoy a glass of wine with peers wrestling with the same questions, we would love to see you there. To request an invitation, reach out at solutions@nossadata.com.

 

At Nossa Data, we are proud to disclose that our ESG reporting software is an accredited and acclaimed ESG software that ensures reporting requirements are met, serving various organisations globally, including PensionBee, Vodafone, and more. Nossa Data  provides tools to improve their ESG and makes their reporting processes more efficient. Nossa Data is CDP Accredited, an EcoVadis Training Partner, and more to help both large listed companies and smaller companies subject to requirements (regardless of where you are on your journey) to be more able to drive business value and gain ROI, using just one platform. Nossa Data is a Friend of EFRAG - Sustainability and are proud of our support to business transparency; EFRAG is an independent body bringing standardisation to annual reporting.

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