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Last updated : 20/07/2026 - 14h42
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LightOn Shares Plunge 7.5% Following Cofounder's Departure

The stock of the French generative artificial intelligence company experiences a sharp decline during the session, following the announcement of a significant reshuffle in its governance. This downturn comes after a spectacular rally since spring on Euronext Growth.


LightOn Shares Plunge 7.5% Following Cofounder's Departure

A Drop that Penalizes the Company's Leadership Reshuffle

LightOn's stock falls 7.4% to €6.13 mid-session, down from €6.62 the previous day. This movement echoes the change in leadership announced on July 9: Igor Carron, cofounder and until then CEO, has resigned from all his positions. Jean-Philippe Baert takes over as CEO while Marie de Lauzon becomes the chair of the board. Such a reshuffle in the governance of a young AI company listed on Euronext Growth mechanically weighs on the strategic visibility of the group, which is reflected in today's session. The weekly decline now reaches 10.6%, after a rally that had pushed the stock up to nearly €7 at the end of June.

The Stock Breaks Below Its MM20 but Maintains a Cushion Above the MM50

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Today's break brings the stock below its 20-day moving average (€6.41), with a 4.4% gap below this short-term reference which had supported the June rebound. The stock also strictly returns to its 200-day moving average at €6.12, a threshold that will serve as a test in the coming sessions. The MM50 remains far behind at €4.95, a legacy of the steep drop at the end of 2025: despite today's fall, the price still maintains nearly a 24% lead over this medium-term reference and still shows a +27.8% increase over three months. The RSI at 56 remains in a neutral zone, without signs of exhaustion. In the longer term, the performance over one year is nevertheless at -39%, reminding us that the recent weeks' rebound has only erased a fraction of the previous drop.



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Investments in the stock market involve risks, including the risk of capital loss. Past performance of an asset or market is no guarantee of future results. Any investment decision should be made taking into account your personal financial situation, objectives and risk tolerance.

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