On the Paris Bourse, around 08:20 GMT, the perfume manufacturer soared 13.35%, posting the best performance of the SBF 120 (-0.27%).
The stock was heading for its biggest rise in four years, as the group said it was on track to meet its full-year forecasts.
Berenberg and Midcap Partners, who are "Buy" on the stock, consider the group's announcements "reassuring", with the second intermediary welcoming in particular the renewal of the Van Cleef license until 2033 and the Montblanc license until 2030.
"The removal of this uncertainty fully validates our growth profile and our Buy rating", writes Midcap Partners.
Interparfums' consolidated sales rose over the last three months to 209.9 million euros from 181 million euros the previous year.
"We are broadly in line with our annual targets following a good performance in the 1st half, despite a complicated situation in the beauty market in certain countries", commented CEO Philippe Benacin, quoted in a press release.
"Reasonable increases in invoice prices in early 2022 and early 2023 have not weighed on sales volumes in the 1st half of 2024", added Philippe Santi, Chief Operating Officer.
"Thanks to the recurrent control of fixed costs and a more balanced distribution of marketing and advertising expenditure between the two half-year periods, operating income for the first half of 2024 should record only a limited decline compared with an exceptionally high first half of 2023", says Philippe Santi.
The company will publish the rest of its half-year results on September 10.
(Written by Pauline Foret and Claude Chendjou, with contributions from Olivier Cherfan, edited by Blandine Hénault)