** Shares in H&M HMb.ST slip 2.7% lower after the Swedish fashion retailer reported "strong" Q4 results but "mixed" Q1 outlook
** Jefferies says H&M's 2% sales decline in the first two months of the new fiscal year puts consensus expectations for 2.3% full-year sales growth "under scrutiny"
** H&M's quarterly sales amounted to 59.2 billion Swedish crowns ($6.73 billion), compared to LSEG-polled analysts' estimate of 59.45 billion crowns
** J.P.Morgan adds Q1 gross margin outlook is "disappointing", as H&M says external challenges including U.S. tariff impacts will be smaller than in Q4
** A potential EU clampdown on a tax loophole for non-EU imports is a long-term challenge, Jefferies says
** It also flags that recent Swedish crown strength could pressure estimates if the Q4 savings are largely one-off
** This cautious outlook would be "unhelpful", with H&M shares trading at a high valuation of over 20 times its 2027 calendar year earnings estimate, Jefferies says
($1 = 8.7972 Swedish crowns)
(Reporting by Vera Dvorakova)
((vera.dvorakova@thomsonreuters.com))