Another typical day in Rupert Murdoch’s media empire: he gets attacked in Britain and his company’s stock goes up.

A British parliamentary panel’s report on Tuesday declared that Mr. Murdoch was “not a fit person to exercise the stewardship of a major international company.”

But while the panel’s findings dealt another blow to Mr. Murdoch’s relationship with the British government, they sent positive signs to Wall Street. Shares of News Corporation closed up 1.21 percent on Tuesday to $20.08, a 43 percent increase from the 52-week low reached last summer.

Many investors, weary of the Murdoch family’s disproportionate control over the company, viewed the report as further evidence that a change of leadership was needed.