From signal to crisis: Early warning signs predict share price falls

Markets often react sharply to major Environmental, Social and Governance (ESG) investigations, court rulings or regulatory decisions.  What is less appreciated is that most significant share price moves are rarely triggered by completely new information. In many cases, the warning signs are visible years in advance. 

Monitoring controversies and regulatory commentary may not tell investors exactly when a crisis will crystallise, but it often reveals that risk is building.

Below are examples where early signals preceded material market reactions. 

FirstRand: The motor finance ripple effect

The South African bank’s share price fell by around 2% in October 2024 after the UK Court of Appeal ruled against motor finance lenders, finding that undisclosed commissions could amount to bribery. The move reflected investor concern about potential redress and wider industry implications. In contrast, the share price rose around 2.5% in August 2025 after the UK Supreme Court clarified that broader industry-wide payouts would not be required. Further clarification on redress provisions also supported sentiment. 

Peers were hit harder. Close Brothers, for example, fell 22% on the initial news in October 2024, and 13% after warning provisions would be materially higher than what they had previously set aside in 2025. Importantly, while the court case and regulatory action began in 2024, the warning signs and potential risks were visible earlier. The UK regulator had already flagged these commission arrangements as unfair and banned them in 2021.

Boeing: When culture eats strategy for breakfast

Boeing provides a more protracted example of how repeated signals can compound over time. The two fatal 737 MAX crashes in 2018 and 2019, which claimed 346 lives, led to a global grounding of the fleet and a sharp erosion in market value. The company subsequently faced ongoing scrutiny, operational disruptions and financial penalties, including a
$2.5bn settlement in 2021. 

Each new safety incident reinforced investor concern. The January 2024 Alaska Airlines door plug blowout triggered renewed selling pressure, and in June 2025, following the first fatal crash of a 787 Dreamliner, shares fell more than 5% in a single day. The cumulative impact of safety failures added financial penalties of $4.9bn, which led to costly delays on its 777X aircraft program in 2025. Unlike a single legal event, Boeing’s case demonstrates how a pattern of safety and governance failures can signal deeper cultural and operational weaknesses. When early warnings are not addressed, they tend to resurface – often at a higher cost.

The investment lesson

ESG controversies are not abstract; they often translate directly into earnings downgrades and sharp share price moves. For client portfolios, this reinforces an important point: risk management is not about reacting once a ruling is handed down. It’s about identifying risks while they are building and understanding how they could affect long-term value.

At Truffle, by assessing governance quality, regulatory exposure and operational risks before they escalate, we aim to reduce the probability of unexpected capital impairment, helping advisers protect client wealth rather than having to explain drawdowns after the fact.