Today is the day, page-19

The other "quiet period" refers to a period of 40 calendar days following an IPO's first day of public trading. During this time, insiders and any underwriters involved in the IPO are restricted from issuing any earnings forecasts or research reports for the company. Regulatory changes enacted by the SEC as part of the Global Settlement enlarged the "quiet period" from 25 days to 40 days on July 9, 2002. When the quiet period is over, generally the underwriters will initiate research coverage on the firm. For a company with less than $1B in revenue, this quiet period was reduced to 25 days by the JOBS act of 2012. Additionally, the NASDAQ and NYSE have approved a rule mandating a 10-day quiet period after a follow-on Offering and a 15-day quiet period both before and after expiration of a "lock-up agreement" for a securities offering.

My bad - seems its only earnings forecasts and research reports