ValueClick Inc. got a boost Monday after a JPMorgan analyst upgraded the stock following a recent decline in stock price.

JPMorgan analyst Imran Khan raised his rating to “Overweight” from “Neutral,” saying that a recent sell-off of the company’s shares was overdone and the stock was now a bargain.

In late July, shares in the Westlake Village-based online advertising seller dropped more than 19 percent in one day after the company reported higher second-quarter profit that missed analyst expectations by one cent per share.

ValueClick also said that a drop in its promotional lead-generation business stung its quarterly results forcing it to lower its profit and sales projections for fiscal 2007.

Shares in ValueClick added $1.88, or 9.9 percent, to $20.96, during afternoon trading Monday on the Nasdaq. Shares have lost 43 percent since hitting a 52-week high of $36.70 on May 22.