DiaSorin completed EUR 250 million buyback. DiaSorin stock gains 1.52 percent
Published on 10/09/2026 at 14:04 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWSKey points in brief
- DiaSorin completed its EUR 250.00 million buyback program on October 7, 2026.
- The program covered 3,790,952 shares, equal to 6.78 percent of share capital.
- First-half 2026 revenue reached EUR 602.00 million and was flat at constant exchange rates.
- DiaSorin stock was at EUR 77.01 at Lang & Schwarz on October 9, 2026, up 1.52 percent versus EUR 75.86.
DiaSorin completed its EUR 250.00 million buyback program on October 7, 2026, while DiaSorin stock was trading at EUR 77.01 at Lang & Schwarz on October 9, 2026, up 1.52 percent versus the EUR 75.86 prior close. According to DiaSorin, the purchases reached the program ceiling and the shares are intended for cancellation.
Three dates define the story
On July 31, 2026, DiaSorin reported first-half revenue of EUR 602 million and confirmed its full-year outlook. On October 2, 2026, the company appointed Margherita Sacerdoti as Investor Relations and ESG Senior Director, according to DiaSorin. On October 7, 2026, the company disclosed the completion of the EUR 250.00 million buyback, making the repurchase the latest dated corporate event.
What does the buyback change?
The final purchases covered 3,790,952 shares, equivalent to 6.78 percent of DiaSorin's share capital, for an aggregate consideration of EUR 249,999,986.67. The filing also states that treasury shares held by the company totaled 6,683,050, or 11.95 percent of share capital, as of October 5, 2026.
The transaction gives the market a precise measure of the capital return: the program used its full EUR 250.00 million authorization and bought no more than the planned 4.5 million shares. The cancellation objective means the repurchased shares are not simply being retained as treasury stock.
Revenue recovery meets margin pressure
In the second quarter of 2026, revenue grew 4.00 percent at constant exchange rates, after first-half revenue remained flat on the same basis. Yahoo Finance reported that adjusted EBITDA reached EUR 194 million in the first half of 2026, down 7.00 percent at constant exchange rates, while the adjusted EBITDA margin stood at 32.00 percent. Management confirmed full-year guidance for revenue growth of 5.00 percent to 6.00 percent and an adjusted EBITDA margin of 32.00 percent to 33.00 percent.
For investors, the contrast is clear: quarterly growth returned, but the first-half adjusted EBITDA decline and the buyback cash outflow keep capital allocation central to the story. DiaSorin's market capitalization was EUR 3.8 billion on October 9, 2026, and the EUR 77.01 Lang & Schwarz price stood 3.40 percent below the 52-week high of EUR 79.72.
Two dates remain on the calendar
DiaSorin's next reported results are listed for November 5, 2026, according to InvestPane. The company's financial calendar also lists November 12, 2026, for approval of third-quarter 2026 financial information, according to SoldiOnline.
Stock remains below its yearly high
At Lang & Schwarz, DiaSorin stock was trading at EUR 77.01 on October 9, 2026 at 2:00 p.m. CEST, up 1.52 percent versus the prior close of EUR 75.86. The 52-week range was EUR 52.34 to EUR 79.72, while market capitalization stood at EUR 3.8 billion on the same date. The further course of trading is shown by the continuously updated real-time quote of DiaSorin stock.
DiaSorin stock facts
- Company: DiaSorin S.p.A.
- ISIN: IT0003492391
- Ticker: DIA.MI
- Primary exchange: Euronext Milan
- Price Lang & Schwarz as of October 9, 2026, 2:00 p.m. CEST: EUR 77.01
- Change versus prior close: plus 1.52 percent
- Prior close Lang & Schwarz September 8, 2026: EUR 75.86
- Market capitalization: EUR 3.8 billion (as of October 9, 2026)
- 52-week range: EUR 52.34-EUR 79.72 (as of October 9, 2026)
- Sector / Industry: Healthcare / In vitro diagnostics
Market context: Market report Euro Stoxx 50.

