Boeing (BA) saw its shares plunge 5.51% in pre-market trading on Thursday, as investors reacted to news of potential counter-measures in the European aerospace sector. The significant drop highlights growing concerns about the impact of international trade tensions on the aviation giant.

The sell-off comes as the French Aerospace Lobby Gifas has approached the European Commission with requests regarding potential counter-measures in response to US tariffs. According to sources, Gifas has asked the Commission to carefully calibrate any counter-measures to avoid negatively affecting European aerospace firms that heavily rely on imports. Additionally, the lobby group has suggested that the EU should apply "proportionate and assertive" counter-measures if US tariffs have a significant impact on the industry.

While these discussions are not directly targeted at Boeing, the news has clearly rattled investors. The potential for escalating trade tensions and retaliatory measures between the US and EU could have far-reaching consequences for Boeing, which has significant business interests in Europe. As one of the world's largest aerospace companies, Boeing's stock movement may also reflect broader market concerns about the stability of international trade relations in the aerospace sector and the potential for disruptions in global supply chains.