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SHAREHOLDER CLASS ACTIONS IN AUSTRALIA: UNCERTAINTY FOR THE FUTURE OF MARKET-BASED CAUSATION

SHAREHOLDER CLASS ACTIONS IN AUSTRALIA: UNCERTAINTY FOR THE FUTURE OF MARKET-BASED CAUSATION

The following article was contributed by Nikki Stever and Madison Smith of Australia-based commercial law firm, Piper Alderman. In the third decision delivered in a shareholder class action in Australia,[1] Iluka Resources Limited (ASX: ILU), (Iluka) succeeded in its defence of a lawsuit[2] which failed to prove that the shareholders’ direct reliance on Iluka’s conduct caused their losses. However, the decision in favour of Iluka notably lacked any significant consideration of the second causation argument typically pleaded in shareholder class actions – market-based causation. Background of the matter Iluka is a large mining company and global supplier of mineral sand products. On 9 July 2012, Iluka revised its sales guidance for its products, resulting in a 25% drop in share price. The shareholders alleged that Iluka’s sales guidance leading up to its announcement:
  1. was misleading or deceptive; and
  2. breached their continuous disclosure obligations.
The lead applicant purported that reliance on the sales guidance impacted their decision to purchase shares in the company (direct reliance).  It is not clear to the authors if the lead applicant or shareholders pleaded that the market as a whole was impacted by the sales guidance (market-based causation). The Federal Court of Australia (FCA) rejected both claims on the basis that the representations alleged were not actually made, and were merely statements/guidance about Iluka’s expectations and were not guarantees or predictions/forecasts of future performance. The FCA also found that the lead applicant relied on various external stock reports rather than statements made by Iluka, causing the direct reliance case to fail. Direct reliance and market-based causation Direct reliance in a shareholder class action requires the claimant to prove they actually relied on the contravening conduct (i.e. statements) when deciding to acquire shares in the defendant company, and that the subsequent decrease in share price was directly related to the contravening conduct, resulting in loss to the shareholder. Market-based causation is based on establishing that the price that the defendant’s shares traded on the market was inflated by the contravening conduct, such that the claimant prima facie suffered loss by paying an increased price for the shares. The Court has accepted this proposition,[3] however, also suggested that it may still be necessary for individual shareholders to give evidence that, but for the contravention by an entity, they would not have purchased the shares (or not at the price paid) in order to establish loss.[4] Causation and loss in Iluka Because the Court found that no representations were made (and therefore they were not capable of being relied upon, either directly or by the market), the judgment was relatively quiet in relation to causation. While there is reference to the failed direct reliance case, in so far as it was held that the lead applicant did not rely on the sales guidance issued by Iluka when deciding to purchase the shares, unusually the judgment is completely silent on market-based causation. In previous cases where market-based causation has been alleged by the plaintiff, the but for test has been discussed by the FCA in the context of considering misleading or deceptive conduct claims.  For example, the alleged contraventions in Myer and Re HIH were assessed by considering whether the alleged loss would not have occurred but for the contraventions.[5] The High Court in Australia has offered an alternative approach in cases of proving factual causation of misleading and deceptive conduct generally – the ‘a factor’ test.[6] The a factor test is satisfied if the misleading or deceptive conduct was a factor in the occurrence of the plaintiff’s loss, or in other words materially contributed to the plaintiff’s loss. In Iluka, this test for market-based causation would be satisfied if the alleged contraventions materially contributed to the shareholders’ loss, rather than the more stringent test of whether the contraventions were necessary for the loss. The a factor test, if adopted, arguably offers a more appropriate test for market-based causation in cases of misleading or deceptive conduct. Firstly, it is more reliable and intuitive.[7] For example, the but for test requires counterfactual speculation as to how a market would have responded but for a particular event. This can be a difficult exercise for a plaintiff to speculate and quantify the loss. The a factor test shifts the requirements from necessity to contribution and is not as easily defeated by a claim that it was not the only factor relevant to the plaintiff’s loss. Secondly, the test also avoids duplicative causation, as market-based causation often involves multiple factors that could have affected share prices.[8] The court does not need to assess each separate factor and consider its relative relevance to the causal loss overall, as is required when assessing the causal conduct following the but for test. Finally, the a factor test promotes the deterrence of all misleading or deceptive conduct by providing a broad opportunity for the conduct to be considered misleading or deceptive, regardless of whether it was necessary for the loss.[9] Conclusion By failing to address market-based causation, the Iluka decision has created uncertainty around what causal test the court would be willing to accept for shareholders to succeed with a market-based causation claim. It is only a matter of time before there is a substantial decision on this point, however, until this occurs, the law on market-based causation remains unsettled. About the Authors Nikki Stever, Special Counsel  — Nikki specialises in complex litigation and disputes, with an emphasis on class actions and disputes involving corporations, competition and consumer legislation and disputes concerning breaches of trust and fiduciary duties. Nikki frequently works with litigation funders and is experienced in the structuring and conduct of funded litigation, across all Australian jurisdictions. Madison Smith, Lawyer  — Madison is a litigation and dispute resolution lawyer at Piper Alderman with a primary focus on corporate and commercial disputes. Madison is involved in a number of large, complex matters in jurisdictions across Australia. For queries or comments in relation to this article please contact Kat Gieras, Litigation Group Project Coordinator | T: +61 7 3220 7765 | E:  kgieras@piperalderman.com.au — [1] Following Crowley v Worley Limited [2020] FCA 1522 and TPT Patrol Pty Ltd as trustee for Amies Superannuation Fund v Myer Holdings Ltd [2019] FCA 1747. [2] Bonham v Iluka Resources Ltd [2022] FCA 71. [3] In the matter of HIH Insurance Limited (In Liquidation) [2016] NSWSC 482; TPT Patrol Pty Ltd as trustee for Amies Superannuation Fund v Myer Holdings Ltd [2019] FCA 1747. [4] TPT Patrol Pty Ltd as trustee for Amies Superannuation Fund v Myer Holdings Ltd [2019] FCA 1747, [1671]. [5] In the matter of HIH Insurance Limited (In Liquidation) [2016] NSWSC 482; TPT Patrol Pty Ltd as trustee for Amies Superannuation Fund v Myer Holdings Ltd [2019] FCA 1747. [6] Henville v Walker [2001] HCA 52, [61] and [106]. [7] Henry Cooney, Factual causation in cases of market-based causation (2021) 27 Torts Law Journal 51. [8] Ibid. [9] Ibid.

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Rep. Issa’s Litigation Funding Transparency Effort Falters in House Judiciary Committee

By John Freund |

The latest attempt to legislate transparency in U.S. litigation funding stalled in the House Judiciary Committee this week when the committee considered the Protecting Third Party Litigation Funding From Abuse Act but recessed without ever voting on the measure and did not reconvene to advance it. The bill, introduced by Representative Darrell Issa of California, has now effectively been pulled from further consideration at this stage.

An article in IPWatchdog states that the Protecting Third Party Litigation Funding From Abuse Act was debated alongside other measures during a lengthy markup that focused primarily on immigration enforcement issues. The measure closely tracked a previous effort, the Litigation Transparency Act of 2025, also spearheaded by Issa, which sought to require parties in civil actions to disclose third party funding sources and related agreements. Like its predecessor, the current bill faced procedural challenges and competing priorities in committee, and did not reach the floor for a vote before lawmakers recessed.

Issa and his co-sponsors have framed the effort as necessary to illuminate so-called abuses in the U.S. litigation system by requiring the identity of third party funders to be disclosed to courts and opposing parties. But the repeated failure of similar bills to gain traction reflects deep partisan and practical concerns. Opponents argue that broad disclosure mandates could chill legitimate funding arrangements and impede access to justice, while supporters insist that transparency is essential to protect defendants and the legal system from hidden financial interests.

The stall of this latest proposal comes amid other congressional efforts on litigation finance, including separate proposals to address foreign funding in U.S. courts, but underscores the political and policy challenges in regulating private capital in civil litigation. With the bill pulled, stakeholders will watch for whether future iterations emerge in committee or form the basis of negotiations in upcoming sessions.

Malaysian Bar Backs Arbitration Funding Reform

By John Freund |

The Malaysian Bar has publicly endorsed Malaysia’s newly implemented legislative framework governing third party funding in arbitration, while cautioning that all stakeholders must remain vigilant as the regime is put into practice. The comments come as Malaysia formally joins a growing group of jurisdictions that have moved to regulate litigation and arbitration funding rather than prohibit it outright.

An article in Business Today Malaysia reports that the Malaysian Bar welcomed the coming into force of the Arbitration Amendment Act 2024 on 1 January 2026, which abolishes the long standing common law doctrines of maintenance and champerty in the context of arbitration. The new law expressly permits third party funding for arbitral proceedings and introduces a regulatory structure aimed at balancing access to justice with procedural fairness and independence. According to the Bar, the reforms are a positive and necessary step to ensure Malaysia remains competitive as an international arbitration seat.

The legislation includes requirements for funded parties to disclose the existence and identity of any third party funder, addressing concerns around conflicts of interest and transparency. It also introduces a code of practice for funders, designed to ensure that funding arrangements do not undermine counsel independence, tribunal authority, or the integrity of the arbitral process. The Malaysian Bar emphasised that funders should not exert control over strategic decisions, evidence, or settlement, and that tribunals retain discretion to manage funding related issues, including costs and security for costs applications.

While acknowledging ongoing concerns that third party funding could encourage speculative or unmeritorious claims, the Bar took the position that ethical and well regulated funding should not be viewed as a threat to arbitration. Instead, it framed funding as a legitimate tool that can enhance access to justice for parties who might otherwise be unable to pursue valid claims due to cost constraints. The Bar called on lawyers, arbitrators, institutions, and funders to uphold both the letter and the spirit of the new law as it is implemented.

Omni Bridgeway Appoints Nathan Krapivensky as Investment Advisor

By John Freund |

Global litigation funder Omni Bridgewayhas announced the appointment of Nathan Krapivensky as an Investment Advisor, reinforcing the firm’s ongoing focus on deepening its investment expertise and strengthening origination capabilities across complex disputes.

Omni Bridgeway states that Krapivensky joins the business with extensive experience spanning litigation finance, complex commercial disputes, and investment analysis. In his new role, he will advise on the assessment and structuring of potential investments, working closely with Omni Bridgeway’s global investment teams to evaluate risk, quantum, and strategic considerations across funded matters. The appointment reflects the firm’s continued emphasis on disciplined underwriting and the development of sophisticated funding solutions for corporate clients, law firms, and claimants.

According to the announcement, Krapivensky brings a background that combines legal insight with commercial and financial acumen, positioning him to contribute meaningfully to Omni Bridgeway’s case selection and portfolio construction processes. His experience in analysing disputes at various stages of the litigation lifecycle is expected to support the firm’s efforts to deploy capital efficiently while maintaining rigorous investment standards. Omni Bridgeway highlighted that the role is advisory in nature, underscoring the importance of independent, high-quality judgment in evaluating opportunities across jurisdictions and asset classes.

The hire also aligns with Omni Bridgeway’s broader strategy of investing in talent as competition within the litigation funding market intensifies. As funders increasingly differentiate themselves through expertise rather than capital alone, senior advisory appointments have become a key lever for firms seeking to enhance credibility with sophisticated counterparties. By adding an experienced investment advisor, Omni Bridgeway signals its intention to remain at the forefront of the market for complex, high-value disputes.