Castings PLC (CGS), the UK-listed iron castings and machined components manufacturer, has disclosed a major shareholding notification dated 10 November 2026, revealing that US financial group Ameriprise Financial, Inc. has increased its aggregate voting rights in the company to 17.191%. The threshold was crossed on 5 November 2026, with the issuer notified on 9 November 2026. The stake is held indirectly through the Minneapolis-headquartered group's Columbia Threadneedle investment management subsidiaries, making Ameriprise one of Castings PLC's most significant institutional shareholders.

Key Points

  • Castings PLC (CGS), ISIN GB0001795680, is a UK-listed iron castings and machined components manufacturer.
  • Ameriprise Financial, Inc. increased its total voting rights in Castings PLC from 16.995% to 17.191% as of 5 November 2026.
  • The holding equates to 7,476,936 voting rights, all held indirectly through Threadneedle Asset Management Limited and related entities.
  • Investors may watch whether further threshold crossings occur, given the scale of the position relative to Castings PLC's shareholder register.

Ameriprise Financial's Voting Rights in Castings PLC Rise to 7,476,936 Shares

According to the TR-1 standard form notification, Ameriprise Financial, Inc. now holds 17.191% of voting rights in Castings PLC, up from a previously notified position of 16.995%. All 7,476,936 voting rights are held indirectly, with zero direct voting rights recorded. The acquisition of additional voting rights triggered the disclosure obligation under the UK's Disclosure Guidance and Transparency Rules. No financial instruments contributing to the position were reported, meaning the entire stake comprises shares with attached voting rights, all classified under ISIN GB0001795680.

Columbia Threadneedle and Threadneedle Asset Management Hold the Position on Behalf of Ameriprise

The notification identifies two distinct holding chains beneath Ameriprise Financial, Inc. Threadneedle Asset Management Limited, which is wholly owned through TC Financing Limited and Threadneedle Asset Management Holdings Limited, holds 14.759% of voting rights. A second chain runs through Columbia Threadneedle Investments UK International Limited and related entities. The shareholder named in the notification is Columbia Threadneedle Investment Funds (UK) ICVC. The ultimate controlling entity across both chains is Ameriprise Financial, Inc., registered in Minneapolis, United States, confirming the transatlantic ownership structure behind the disclosed position.

Castings PLC's Position as a UK Industrial Manufacturer Underpins Institutional Interest

Castings PLC operates as a specialist UK manufacturer of iron castings and machined components, primarily supplying the commercial vehicle and automotive sectors. The company's focused industrial model and consistent UK manufacturing base have historically attracted long-term institutional investors. The increase in Ameriprise's stake, managed through Columbia Threadneedle's active investment funds, suggests continued conviction in the company's investment case, though the announcement contains no commentary on operational performance, earnings guidance, or strategic developments at the company level.

Notification Completed in Swindon on 9 November 2026

The TR-1 form was completed on 9 November 2026 in Swindon, UK, in accordance with regulatory requirements. The five-day gap between the threshold being crossed on 5 November 2026 and the issuer being notified on 9 November 2026 falls within standard DTR5 reporting windows. No additional information regarding voting arrangements, proxy holders, or expiry dates for financial instruments was included in the disclosure. Investors monitoring significant shareholder movements at Castings PLC will note that Ameriprise's position now stands at a materially elevated level on the company's register.