(Bloomberg) -- Wall Street has been surprisingly laid back about Bernie Sanders’ rise in the Democratic presidential primary, but that may be about to change.

Former Goldman Sachs Group Inc. CEO Lloyd Blankfein, for one, spoke up after the Vermont senator’s first-place finish in New Hampshire to argue that he would “ruin our economy.”

“If Dems go on to nominate Sanders, the Russians will have to reconsider who to work for to best screw up the US,” he tweeted. “Sanders is just as polarizing as Trump AND he’ll ruin our economy and doesn’t care about our military. If I’m Russian, I go with Sanders this time around.”

A registered Democrat, Blankfein last tweeted three months ago to criticize Elizabeth Warren for vilifying Wall Street, raising eyebrows when he said that “tribalism is just in her DNA.”

Although Wall Streeters had been fairly vocal about Warren’s surge last fall, the market has been calm as Sanders has taken the lead, because investors either don’t think the self-defined democratic socialist can win or doubt he can implement his most far-reaching proposals due to congressional skepticism.

COMING UP

Democratic presidential candidates will meet for their next debate on Feb. 19 in Las Vegas.

Nevada holds its caucuses on Feb. 22, and South Carolina has a primary on Feb. 29.

(Disclaimer: Michael Bloomberg is also seeking the Democratic presidential nomination. He is the founder and majority owner of Bloomberg LP, the parent company of Bloomberg News.)

To contact the reporter on this story: Ryan Teague Beckwith in Manchester, New Hampshire at rbeckwith3@bloomberg.net

To contact the editors responsible for this story: Wendy Benjaminson at wbenjaminson@bloomberg.net, Max Berley, Elizabeth Wasserman

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