The Financial Times article titled "The defence stocks aren’t defensive" discusses how, contrary to popular belief, defense stocks do not consistently offer a defensive investment strategy. The article suggests that while immediate geopolitical tensions might initially boost these stocks, a variety of factors can quickly reverse these gains, leading to investor disappointment.

Key reasons for this non-defensive behavior include concerns over production bottlenecks, which can limit a company's ability to capitalize on increased demand. Additionally, uncertainty surrounding government defense funding, particularly in the US, can create instability for these companies. The article implies that even during active conflicts, such as the US-Iran war mentioned in related articles, defense stocks can decline, challenging the notion that they are a safe haven during periods of instability.

The broader trend indicates that investors often "buy the rumor but sell the war," meaning initial speculation of conflict drives up stock prices, but once the conflict is underway, profits may not materialize as expected. This leads to a correction as investors re-evaluate the long-term prospects and operational challenges faced by defense contractors. The article cites examples where defense stocks have given back gains or dropped despite ongoing geopolitical tensions, highlighting their susceptibility to market dynamics beyond just conflict escalation.

Moreover, the article points to European defense stocks facing uncertainty due to factors like governments scrapping warship projects and overall market momentum slowing down. For instance, Rheinmetall AG, Germany’s largest defense company, has seen a significant drop from its peak, and new listings in the sector are not guaranteed successes, indicating a broader loss of investor confidence in the sustained growth of the defense sector.