OHB’s Volatile Week: Joint Venture Progress Meets the Harsh Reality of a Tiny Free Float

Shares in OHB SE careened through a turbulent week, swinging 21% in three days even as the company finalised a landmark joint venture with Rheinmetall for military satellite communications. The juxtaposition encapsulates a growing tension for the German space and defence group: operational and strategic milestones are being drowned out by a stock structure that amplifies every trade.

The culprit is an exceptionally narrow free float. At the end of 2025, the Fuchs family held 65.4% of the shares, Orchid Lux HoldCo controlled 28.6%, and just 5.7% — equivalent to roughly 1.09 million of the 19.2 million outstanding shares — were freely tradable. Against that backdrop, modest order volumes produce outsized price moves. Xetra turnover data tells the story: 6,774 shares on Monday, 30,290 on Wednesday, 18,569 on Thursday, and 14,873 on Friday.

The price action was equally dramatic. Shares opened the week at €596, tumbled to €448 by Wednesday — a 21% drop — staged a short-lived recovery, then slid again. Friday alone saw a trading range of €57 between the intraday high and low. On Xetra the stock ended at €442.50, down 5.25%, while on Stuttgart it closed at €438, representing a 7.79% decline for the session. The one-year performance nonetheless remains eye-catching: up 545%.

Should investors sell immediately? Or is it worth buying OHB SE?

Into that volatility landed news of the Rheinmetall joint venture. The Bundeskartellamt cleared the deal on 16 April, and the parties finalised their plans on 29 May, as reported by Aviation Week. Under the structure, OHB will handle the space and ground segments — satellite production and ground stations — while Rheinmetall Digital takes the user segment with end-user terminals. Both will act as system integrator and prime contractor for a proliferated LEO communications satellite programme for the Bundeswehr. Notably, no contract has been awarded yet; the joint venture is a vehicle to pursue a programme, not a confirmed order.

Operationally, OHB remains in solid shape. First-quarter results released on 7 May showed total performance of €279.3 million, a 15% increase year-on-year. Adjusted EBITDA rose 37% to €27.3 million and adjusted EBIT reached €16.8 million. The order backlog swelled to €3.354 billion, up from €2.314 billion a year earlier — a 45% jump — with Space Systems contributing €2.683 billion of that figure. The company’s capacity to execute is not in question.

Looking ahead, the virtual annual general meeting is scheduled for 8 June at 10:00 MESZ, with registration and proof of shareholding required by 1 June at midnight. Second-quarter results are due on 6 August, followed by third-quarter numbers on 12 November. Until the free float broadens — if it ever does — every piece of news, especially around the Bundeswehr programme, will hit the stock with disproportionate force. The thin free float is not a flaw; it is the defining feature of OHB’s market.

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