Updated from 2:25 pm with leak confirmation news.
Activision later released its earnings, with revenue of $1.9 billion. Analysts originally projected the company to post revenue of $1.32 billion.
After the brief pop in afternoon trading, shares were down about 2%.
Trading on ATVI resumed after the leak froze the shares. Shares ended the day at $66.82, a decline of 2.3%.
"We do not comment on our stock price," said a spokesperson for Take-Two Interactive.
The release was initially posted on Dow Jones News Wire, but the report has not yet been verified by Activision.
UPDATE: Wall Street Journal parent company Dow Jones statement to CNBC on Activision earnings report—
"We regret our error as well as inadvertently breaking the embargo. We have issued a correction and are reviewing our processes."https://t.co/2iOtidWi1w— CNBC Now (@CNBCnow) May 3, 2018