News + Filings Key Docs Holdings Ownership
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BlackRock Fund Advisors
> SWSI
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2010 | Superior Well Services, INC | SWSI | 930,584 | 125,906 | 15,559,000 | 4,792,000 | $16.72 |
| 03/31/2010 | Superior Well Services, INC | SWSI | 804,678 | 18,056 | 10,767,000 | -450,000 | $13.38 |
| 12/31/2009 | Superior Well Services, INC | SWSI | 786,622 | 786,622 | 11,217,000 | 11,217,000 | $14.26 |
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