Here's the data on Short Interest from NASDAQ site for the...

Here's the data on Short Interest from NASDAQ site for the period Dec 12 to May 13. Can anyone explain how this works exactly? Whats the impact of "Days to cover"? ie what does it imply if the days to cover drops from 15 days to 2 days.

I get that shorting is selling shares not owned, that covering is when the shorter buys (hoping that its at a lower price).

The short interest has been steadily rising fortnight by fortnight with only a few drops. looks like it dropped again in first 2 weeks of May. A turnaround??

Settlement Date. Short Interest. Av Daily Share Vol. Days To Cover.
5/15/2013 346,671 68,586 5.054545
4/30/2013 382,939 66,123 5.791313
4/15/2013 354,224 167,043 2.120556
3/28/2013 331,034 20,858 15.870841
3/15/2013 336,648 67,651 4.976246
2/28/2013 300,160 42,149 7.121403
2/15/2013 324,068 119,210 2.718463
1/31/2013 235,643 61,247 3.847421
1/15/2013 162,096 40,623 3.990252
12/31/2012 135,248 41,359 3.270098
12/14/2012 164,620 64,507 2.551971
11/30/2012 178,113 133,245 1.336733
11/15/2012 149,728 30,597 4.893552
10/31/2012 146,841 115,015 1.276712