New York, Aug 18: Is social networking giant Facebook is passing through "too big to fall" syndrome, as its shares touched new low on Friday and closed at $19.05 per shares, almost half of the IPO price of $38 a share.

Valuation theory masters are at full play, as majority are of view that it was overvalued, but nobody was daring to take negative view seeing the over 900 million user base.

So what is pushing the SNS giant's stock southward?

Facebook stocks shed 13% this week, touching $19 a day after the expiration of lock in period. Now, holders of 271million Facebook shares can sell their stock.

In fast changing internet world, where users are shifting to smartphone, possibility of increasing is under question, resulting into negative overall sentiment.

Two major IPO's of Linkedin ($101.36) is doing much better as compared to FB, how it would be too early to say anything about the future movement of the stock as new buyers can enter at this attractive price.

Facebook reported a loss of $157 million in the April-June quarter, largely because of accounting rules requiring it to set aside reserves for stock compensation.

Revenue for the second quarter totaled $1.18 billion, an increase of 32 percent from the same period a year ago.