Dimensional Fund Advisors disclosed a Rule 8.3 position in Gamma Communications PLC on August 14, 2026, indicating interests in relevant securities representing 1% or more of the UK-listed telecommunications company's ordinary shares during an offer period under the UK Takeover Code. The filing covered Gamma's 0.25p ordinary shares (GB00BQS10J50), said Dimensional disclaims beneficial ownership of the shares described, and stated that Dimensional Fund Advisors LP and its affiliates lack voting discretion over 29,069 shares in the total position. Investec was identified as joint broker to Gamma, while the form did not describe a material change in the overall holding, pointing to an opening position disclosure or a filing after dealings without a meaningful shift. The disclosure came alongside same-day filings on Spire Healthcare Group PLC, SEGRO PLC, Rotork PLC, Prologis Inc and DCC Energy PLC, with reported transfers into Dimensional-managed accounts rather than confirmed open-market purchases. Separate Form 8.3 reporting from Man Group PLC on August 13 showed a reduction in a long position via cash-settled derivatives (contracts settled in cash rather than shares), underscoring the institutional focus on Gamma as takeover speculation continues. Rule 8.3 requires holders of 1% or more of relevant securities (shares or related instruments counted for takeover disclosures) to report positions and dealings publicly during an offer period.