European defense sector valuations retain significant upside as government commitments to increase military spending convert into tangible order flow, according to a senior banker at BNP Paribas SA. The assessment signals that the re-rating of defense contractors, which began after Russia's invasion of Ukraine, has further to run as political pledges materialize into contracted revenue.

The shift from headline spending targets to booked orders marks a critical inflection point for the sector. NATO members have committed to directing at least 2% of GDP toward defense, with several nations accelerating procurement timelines. That pipeline is now appearing in order books at major prime contractors, reducing the execution risk that previously kept multiples compressed relative to broader industrials.

For investors, the banker's view implies that current valuations do not fully reflect the multi-year visibility now building. Order intake at companies such as Rheinmetall, Thales, and BAE Systems has surged over the past four quarters, outpacing revenue recognition and creating a backlog buffer that supports margin expansion. The market has historically applied a discount to defense stocks on cyclicality concerns; that discount narrows when visibility extends beyond a single budget cycle.

The key test ahead is conversion speed — how quickly booked orders translate into cash flow and whether governments sustain procurement discipline amid fiscal pressure. Valuation upside hinges on that execution.