The fourth-largest US lender said profit rose to $4.74 billion, or $1.05 per share, in the three months ended March, from $653 million, or 1 penny per share, a year earlier.
Since then, an ultra-loose monetary policy, trillions in stimulus support and an accelerated vaccination program have largely put the world's largest economy on a more solid footing.
"If large private companies are not held to the same level of scrutiny as public companies, we will create an unintended incentive to shift carbon-intensive assets to markets with less transparency and, often, less regulation," Fink wrote.
Fink's language was more specific than in a January memo in which he said climate disclosures "should be embraced" by large private companies.