H&M (OTC:HNNMY) CEO Helena Helmersson has resigned with immediate effect. The company’s veteran, Daniel Ervér, has taken over. The sudden change in leadership comes as the Swedish fashion retailer grapples with declining sales and profitability. What Happened: On Wednesday, Helmersson unexpectedly stepped down, citing the demanding nature of her role and her lack of energy to continue, reported Reuters. This announcement resulted in a disappointing 8% drop in the company’s shares. The company’s sales for December and January also saw a 4% decrease compared to the previous year, a concerning tr…