Two very different dynamics are afoot:
1. The stock market's on a tear, up 11 per cent since the election (12 per cent including dividend payouts, compared with about 0 over the comparable period before the election). CEOs parade out of meetings with President Trump, gleeful as they promulgate endorsements of the new president, who clearly makes them feel much better than did his predecessor.
2. Trump's public comments continue to tout his election victory, flout the facts (The Washington Post Factchecker reports: "Out of the 35 days tracked through Feb. 23, there have been no days without any recorded false or misleading claims"), deny the obvious chaos in the White House, and rail against the media (in an unprecedented move, he also banned certain news outlets, including CNN and the New York Times, from a briefing). The Republican Congress is gridlocked on tax cuts and Obamacare repeal. Trump's executive order banning the entry of people from seven Muslim-majority countries and Russia's apparent involvement in the U.S. election are raising profound legal and security questions, while Cabinet appointments, including those of commerce secretary and U.S. trade representative, remain unconfirmed (thus, nothing yet on trade policy).
Given the events in number 2, how could market participants and CEOs conclude everything's fine? You could cite Calvin Coolidge's adage that "the business of America is business," but many of these CEOs lead firms whose businesses depend on steady, well-anchored American leadership to administer global trade, immigrant flows and predictable tax policies.
At one level, the market rally seems based on expectations of tax cuts for businesses and deregulation, both of which imply higher profitability and are probably forthcoming (though they'll probably arrive at a later time and deliver less than markets expect). For example, the Dodd-Frank financial law requires lending institutions to hold more capital as a buffer against loan losses. If that requirement is loosened, lenders can use that currently walled-off capital to buy assets, potentially increasing their bottom lines (and, not incidentally, raising systemic risk).