** Shares of digital marketing co QuinStreet Inc QNST.O
fall as much as 30% to $11.46, hitting a 1-yr 3-mnth low
** Stock set for its worst day ever, if losses hold
** Misses fourth-qtr profit and rev. estimates, according to
IBES data from Refinitiv
** QNST's second profit miss in a row, has missed profit
twice in the past eight qtrs
** "While the business continued to ramp, the rate of
acceleration of growth was slower than forecast," CEO Doug
Valenti said in a statement urn:newsml:reuters.com:*:nGNX3lSvR7
** Including session's losses, stock down 28% this year,
while the broader S&P 500 index .SPX up ~16% in the same time
(Reporting by Bharath Manjesh in Bengaluru)
((Bharath.ManjeshR@thomsonreuters.com; outside U.S. +91 80
6749 8400;))