The German defense industry is coming together: What the tank supplier's brilliant stock market debut means. On the price board of the Frankfurt Stock Exchange, which was completely bathed in the company's color orange, 17.50 euros was the first price that lit up on Wednesday shortly after the start of trading.

The Renk large gearboxes are used in tanks, which are experiencing a boom in the wake of global armament - the so-called turning point. The major customer now holds 6.7 percent of Renk.