Rheinmetall's stock's development during the last five years closely matches that of Saab, another big European weapons manufacturer. You don't have to be a political insider to guess that the stock will increase in value.
having non public information about a company that is also doing well publically is still an effective trading strategy. the value of a company like Rheinmetall is the sum of it's sources of profit.
One wonders if people on that committe would naturally be more inclined to trade in the defense industry; like how people on HN seem to have a lot of SV tech investments.
And Rheinmetall is in Europe, not America, where all of these things are 100x more true.