The industry standard interest rate lock-in period is 60 days.

FORBES: The No-Cost Refinancing Myth

If for any reason the loan approval process is delayed and your interest rate lock-in period needs to be extended, it can be, although there is a cost involved.

FORBES: The No-Cost Refinancing Myth

This not only drives data revenues but also reduces churn, or the migration of smartphone users to competing carriers, as customers cannot change carriers before the expiry of the lock-in period.

FORBES: China Telecom Geared Up for iPhone Frenzy As Demand Boils

Instead of a three-year lock-in they would have to agree only to a three-month notice period followed by three months of inactivity.

ECONOMIST: The battle at Lazard

The lock-up period for those shares ended two weeks ago, coinciding with a 13% slide in the company's share price.

FORBES: Pulling Click Commerce From Weak Hands

Facebook (NASDAQ:FB) has been one of the strongest stocks in the market over the past three weeks following the expiration of an 800 million share IPO lock-up period.

FORBES: New Life For Apple, Facebook, Google As Walking Dead Start Running Again