H&M's B shares trade on Nasdaq Stockholm under the ticker symbol HM B.
H&M is formally H & M Hennes & Mauritz AB, and its listed share structure includes A and B shares. The B-share ticker is commonly displayed as HM B in market listings and financial references. The letter identifies the share class rather than a separate consumer brand.
The ticker is often shortened informally to H&M, which is the retail brand name but not the exact exchange notation. It is also easy to confuse the ticker with the company's legal name or with a conventional stock-market code used by a different exchange.
H&M's shares are associated with Nasdaq Stockholm, Sweden's principal stock exchange. Financial databases may format the symbol differently depending on the service, but HM B is the standard Nasdaq Stockholm designation for the company's B shares.