Major investors file 8.3 disclosures showing stakes in several UK listed companies

In early July 2026, institutional investors submitted Form 8.3 public opening position disclosures under takeover rules, revealing sizable holdings in a range of UK‑listed firms.

Octopus Investments disclosed ownership of 19,796,735 ordinary 5 p shares in Advanced Medical Solutions Group plc, representing roughly 0.97% of the company’s stock. Man Group PLC reported holding 1,264,443 €0.25 ordinary shares in DCC plc, a 1.48% stake, together with related derivative positions.

Molten Ventures plc disclosed purchases by its chief financial officer and an associated person of 1,682 and 2,532 ordinary shares respectively, at prices of £5.91 and £5.89 per share on the London Stock Exchange.

The Vanguard Group, Inc. filed two separate disclosures. It reported a holding of 23,636,789 ordinary 2 7/7p shares in easyJet plc, amounting to about 3.12% of the airline’s equity, and a holding of 126,486,984 common shares in Prologis, Inc., representing roughly 13.6% of the U.S. logistics firm, with both purchases and sales recorded.

These filings, dated between 6 July and 9 July 2026, provide transparent insight into the investors’ positions ahead of potential market moves.