LONDON (Reuters) – British asset manager abrdn reported a 47% rise in 2021 operating profit to 323 million pounds ($433.53 million), it said on Tuesday, helped by strong market performance and in line with analysts’ estimates. Assets under management and administration rose 1% to 542 billion pounds. Asset managers and insurers have been reporting healthy results, buoyed by government and central bank stimulus to combat the COVID-19 pandemic. “We benefit from a strong capital position enabling us both to continue to invest in the business and return money to shareholders,” chief executive Steph…