They have now climbed 53% this year on hopes the group has embarked on a road to recovery after slowing footfall at its core H&M-branded stores caused years of sliding group profits, mounting inventories and shrinking market value.
Over the past few years the Swedish-based retailer has invested in online services, new store concepts and independent brands to broaden its customer base and turn itself around.
H&M said its sales in September-November, its fourth quarter, were held back by the Black Friday shopping day falling later this year.
It said sales for the quarter rose 9% to 61.7 billion crowns ($6.41 billion). Analysts had forecast a 10% rise, according to Refinitiv SmartEstimates.
In local currencies, growth was 5%.
"Black Friday this year fell a week later, i.e. just before the end of the month of November," H&M said in a statement.
"Therefore some of the big Black Friday online sales will not be recognized until December. The amount in question is
expected to be approximately 500 million crowns."
H&M said that adjusted for that, sales grew 10%, or 6% in local currencies and analysts said that stripping out the Black Friday impact, sales broadly matched expectations.
Rival Inditex, the world's biggest clothing retailer and owner of the Zara chain, said last week its net profit grew 14% in the three months through October, helped by sales growth of 9% according to Reuters' calculation and shrinking inventories.
RBC analyst Richard Chamberlain, with an "outperform" rating on H&M's shares, said H&M's sales figures indicated the retailer had gained share in major markets such as Germany, H&M's biggest market, where industry-wide in-store sales shrank by an estimated 4%.
In the third quarter, H&M had increased profit for the first time in more than two years as heavy spending to meet changes in the market helped sales reach 8% growth in local currencies - a pace last seen three years ago.
Analysts expect full-year profits to grow for the first time since 2015, despite still-high inventory and investment levels.
H&M, which is controlled by the founding Persson family, is scheduled to publish its full earnings report on Jan. 30.
(Reporting by Anna Ringstrom, editing by Helena Soderpalm and Susan Fenton)