Brambles: A Landmark Win in Australian Shareholder Class Actions

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On 10 April 2026, the Honourable Justice Murphy of the Federal Court of Australia handed down a landmark judgment in Southernwood v Brambles Ltd (No 3) [2026] FCA 418 – the first shareholder class action in Australia that has succeeded at judgment following trial. Maurice Blackburn conducted this matter, jointly with Slater & Gordon.

The applicants were successful in their primary claims against Brambles for a considerable part of the relevant claim period. The Court found that Brambles had contravened the law and engaged in misleading or deceptive conduct and breached its continuous disclosure obligations between 16 November 2016 and 23 January 2017. The contravening period the Court upheld captures the critical window in which Brambles' internal results had deteriorated to the point where guidance should not have been maintained.    

The case in brief

Brambles is a multinational company listed on the ASX with a focus on pallets and logistics services. In a series of three market announcements, Brambles gave, and reiterated, earnings guidance in respect of the 2016/17 financial year. Then, without warning, on 23 January 2017 Brambles withdrew its sales and underlying profit guidance — and only a month later, withdrew its medium-term financial targets as well. The market reacted sharply: Brambles' share price fell approximately 15.8% on 23 January 2017 and a further 11.8% on 20 February 2017.

The Court accepted that aggressive internal budgets are unremarkable in commercial life. The difficulty was that Brambles' senior management and Board chose to set external guidance so close to those budgets that there was almost no room for underperformance — a miss of less than 1% to its underlying profit budget would be enough to breach the FY17 guidance. The Court inferred that Brambles set the bar that high to optimise its share price, and while it was entitled to do so, the consequence was that investors were likely to rely on that guidance in deciding whether to buy or sell.

The applicants were successful in their core claims from 16 November 2016 against Brambles and, significantly, the Court assessed the losses of group members at $1.85 per share for shares purchased before 23 January 2017 and held after that date; and $1.57 per share for those purchased between 16 November to 21 December 2016.

Advancements on causation and loss principles

Some of the most important aspects of the judgment relate to the Court’s advancement of causation and loss principles in shareholder class actions — the areas that have proved most challenging for plaintiffs to date. The reasons also set out a framework for how plaintiffs can succeed on these issues at trial. Three developments stand out.

First, this decision has made clear that when assessing questions of causation and loss, plaintiffs are not required to establish “exact” economic equivalence — properly recognised as being an insurmountable standard of perfection. Instead, the Court has reframed the approach to ask whether as a matter of “economic substance” the alleged undisclosed information was equivalent to the corrective information. The decision cautions against an “overly technical approach focussing upon a supposed need to prove exact economic equivalence …[which] risks missing the point”. The compensatory principle should not be rendered subservient to the supposed need to conduct a perfect analysis, otherwise, doing so “risks giving credit to Brambles for its own misconduct”.

Second, the decision endorses a commercial “common sense” evaluation of causation and loss, and demonstrates the importance of assessing evidence such as actual market analyst reactions to the release of bad news.

Third, market-based causation has been reaffirmed as being available as a matter of law. In doing so, the Court rejected Brambles' argument that market-based causation impermissibly "anthropomorphises" the share market by attributing a single purpose or causal influence to a diverse group of buyers and sellers, each trading for their own reasons and on the basis of their own information. The Court was not persuaded that the existence of heterogeneous trading motivations undermined the availability of market-based causation as a matter of law.

This judgment has progressed the landscape in shareholder class actions and sets out a worked example of how these claims can succeed at trial. It also provides a practical and commercially sensible framework for assessing questions of causation and loss.

Maurice Blackburn is proud to have led this ground-breaking outcome which continues to strengthen corporate governance and affirms the rights of investors in Australian capital markets

At the date of writing, the judgment has not yet been publicly published.

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