BlackRock (BLK. N), which expanded its business in private-market assets and data last year with acquisitions worth more than $25 billion, has told its employees it will cut about 1 percent of its workforce. BlackRock president Rob Kapito and chief operating officer Rob Goldstein told employees in a memo on Wednesday that they plan to realign resources with strategy through layoffs and other measures. The company has more than 21,000 employees, meaning about 200 people will be affected.