Suspicious trading ahead of merger announcements drops to all-time low in UK

Suspicious trading in shares ahead of M&A announcements dropped to an all-time low in the UK last year, indicating a decrease in insider trading, according to regulator the Financial Conduct Authority (FCA).

Abnormal price movements preceded 13.9 percent of M&A announcements last year, compared with 15.1 percent in 2013, the FCA says in its annual report. The measure peaked at more than 35 percent in 2010 and was above 30 percent when measurement began in 2006.

‘The statistic does not provide a perfect measure of the level of insider trading, but the observed significant decline in the incidence of potential insider trading cases suggests insider trading has become rarer,’ the regulator adds.

The FCA says media speculation, analysts’ assessments and other factors can also influence trading ahead of M&A announcements, which is why the study does not provide a ‘perfect measure’ of insider trading levels.

The authority also says in its annual report that the number of whistleblower cases it has processed rose 28 percent to 1,340 in the year ending March 2015 compared with the previous year. The number has more than tripled in the past five years, which ‒ according to the FCA ‒ is a sign of increased awareness and a rising emphasis on whistleblower cases.

‘Information from whistleblowers has contributed to firms and individuals being fined, permissions being varied or withdrawn, warning letters being issued and a range of other early intervention actions, such as asking a firm for clarification about its activities,’ the report notes.

The financial advisory sector accounted for the largest number of whistleblowing cases, at 271, followed by consumer credit with 208, retail banking with 156 and retail insurance with 155. Investment banking accounted for 93 cases and the asset management sector had 35.

Upcoming events

  • Forum & Awards – South East Asia
    Tuesday, December 2, 2025

    Forum & Awards – South East Asia

    Building trust and driving impact: Redefining investor relations in South East Asia Investor Relations in South East Asia is at a turning point. Regulatory fragmentation, macroeconomic volatility and the growing importance of retail investors require IROs to strategically analyze and reform traditional practices. The ability to deliver transparent, dependable and…

    Singapore
  • Briefing – The value of IR in an increasingly passive investment landscape
    Wednesday, December 3, 2025

    Briefing – The value of IR in an increasingly passive investment landscape

    In partnership with WHEN 8.00 am PT / 11.00 am ET / 4.00 pm GMT / 5.00 pm CET DURATION 45 minutes About the event Explore how IR teams can adapt to the rise of passive investing while effectively measuring and communicating their impact. As index funds and ETFs reshape…

    Online
  • Forum & Awards – Greater China
    Thursday, December 4, 2025

    Forum & Awards – Greater China

    Adapting to change in Greater China: IR strategies for a sustainable, digital and global era The investor relations landscape in Greater China is being reshaped by rapid technological advances, growing ESG expectations, tighter budgets and increasing geopolitical pressures. Digital tools such as automation and Artificial Intelligence (AI) are transforming how…

    Hong Kong SAR

Explore

Andy White, Freelance WordPress Developer London