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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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CSAA Sees 2026 Shift in Litigation Finance Fight

By John Freund |

A senior legal executive at CSAA Insurance Group has signaled what she describes as a potential turning point in the long-running conflict between insurers and the litigation finance industry. Speaking amid heightened political and regulatory scrutiny of third-party funding, the comments reflect growing confidence among insurers that momentum is shifting in their favor after years of unsuccessful pushback.

An article in Insurance Business reports that CSAA’s chief legal officer argued that 2026 could mark a decisive phase in efforts to rein in litigation finance, citing increasing legislative interest and judicial awareness of the role funding plays in driving claim frequency and severity. According to the article, CSAA views litigation funding as a key contributor to social inflation, a term insurers use to describe the rising costs of claims driven by larger jury verdicts, expanded liability theories, and aggressive litigation tactics.

The executive pointed to a wave of proposed disclosure rules and transparency initiatives at both the state and federal levels as evidence that lawmakers are taking insurer concerns more seriously. These proposals generally seek to require plaintiffs to disclose whether a third-party funder has a financial interest in a case, a reform insurers argue is necessary to assess conflicts, settlement dynamics, and the true economics of litigation. While many of these measures remain contested, CSAA appears encouraged by what it sees as a shift in tone compared to previous years.

The article also highlights the broader industry context in which these comments were made. Insurers have increasingly framed litigation finance as a systemic risk rather than a niche practice, linking it to higher premiums, reduced coverage availability, and increased volatility in underwriting results. Litigation funders, for their part, continue to argue that funding expands access to justice and that disclosure mandates risk revealing sensitive strategy and privileged information.

Axiom Shuts Arizona Law Firm After Three-Year Experiment

By John Freund |

Axiom, the global legal talent and services provider, has decided to close its Arizona-based law firm, Axiom Advice & Counsel, marking the end of a high-profile experiment under the state’s alternative business structure regime. The move comes roughly three years after the firm launched, and reflects a broader strategic refocus rather than a regulatory intervention or disciplinary issue.

An article in Reuters reports that Axiom voluntarily chose to wind down the law firm as part of a reassessment of where it sees the greatest opportunity for growth. The firm plans to surrender its license, with the process subject to review by the Arizona Supreme Court, and indicated that the decision was made in 2025 following internal changes and departures at the firm. Axiom described the venture as a useful learning experience but ultimately one that no longer aligned with its core business priorities.

Axiom Advice & Counsel launched in early 2023 after Arizona became the first US state to permit non-lawyer ownership of law firms. The firm was positioned as a novel hybrid, combining Axiom’s flexible legal staffing model with direct legal services delivered through a licensed law firm. At launch, Axiom emphasized efficiency, technology enablement, and an alternative to the traditional law firm structure. However, by early 2025, key personnel had left the practice, and the firm concluded that operating a regulated law firm was not the optimal use of its resources.

The closure comes amid continued experimentation under Arizona’s ABS framework. Around 150 entities have been licensed, including legal services platforms such as LegalZoom and Rocket Lawyer, professional services providers like KPMG, and other alternative legal service providers testing new delivery models. While some have expanded their footprint, others, like Axiom, appear to be recalibrating their approach.

Omni Bridgeway Reports Strong 2Q26 Portfolio Performance

By John Freund |

Global litigation funder Omni Bridgeway has released a positive second quarter portfolio update, pointing to strong completion metrics and reinforcing confidence in its diversified funding strategy across jurisdictions and dispute types. The update highlights the importance of disciplined case selection and portfolio construction at a time when the legal funding market continues to mature and face closer scrutiny from investors.

An article in GlobeNewswire outlines that Omni Bridgeway recorded excellent completion outcomes during the quarter, with multiple matters reaching resolution and contributing to realizations. The company emphasized that these completions were achieved across different regions and segments of its portfolio, underscoring the benefits of geographic and claim diversification. Management noted that the results were consistent with internal expectations and supported the firm’s longer term return profile.

According to the update, Omni Bridgeway continues to focus on converting invested capital into realized proceeds, rather than simply growing commitments. The funder highlighted that completion metrics are a key indicator of portfolio health, as they reflect both successful case outcomes and effective timing of resolutions. Strong completions also provide liquidity that can be recycled into new opportunities, supporting sustainable growth without excessive balance sheet strain.

The update also touched on broader portfolio dynamics, including the ongoing mix of single case investments and portfolio arrangements with law firms and corporates. Omni Bridgeway reiterated that its underwriting approach remains cautious, with an emphasis on downside protection and realistic settlement expectations. While the company acknowledged that litigation timelines can be unpredictable, it expressed confidence that the current portfolio is well positioned to deliver value over the medium term.