The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.
| Period | Length | Value | Last reported | Filings |
|---|---|---|---|---|
| Jan 1, 2010 – Sep 30, 2010 | 9 months | $682,000,000 | Nov 5, 2010 | 1 |
| Jan 1, 2010 – Jun 30, 2010 | 6 months | $411,000,000 | Aug 4, 2010 | 1 |