Why it matters: Trump is keeping a list of CEOs and corporations he believes have wronged him or backed his rivals. Business leaders wary of retribution have been reaching out and playing nice.

Between the lines: While some CEOs likely approve of Trump's tax-slashing policies, U.S. business leaders have drifted left overall over the past two decades.

Driving the news: In recent days, Trump has had phone calls with Apple CEO Tim Cook and Google CEO Sundar Pichai.

Plus, Wall Street is betting on a Trump win.

Zoom in: Trump also hailed two big billionaire-owned newspapers' decisions not to endorse a presidential candidate as stamps of approval for his campaign.

Zoom out: CEOs often reach out to both candidates as a courtesy, "especially in the 12th hour," Jeffrey Sonnenfeld of the Yale School of Management tells Axios.

Reality check: Business leaders are calling Trump, but he's still seeing the lowest level of financial contributions from Corporate America in a century, Sonnenfeld says.

The bottom line: Even if CEOs of America's major corporations aren't fans of Trump, they don't want to be on his bad side if he wins back the White House.