q2 2012, page-18

Here is the short position in DTE from ASIC website.

31st Jan 2012 - 6,596,199 (0.91%)
29th Feb 2012 - 8,422,593 (1.16%)
30 March 2012 - 9,566,036 (1.29%)
30th April 2012 - 17,217,203 (2.34%)
1st May 2012 - 17,197,609 (2.33%)

Look at how the shorting compain started few months ago and increasing till April. In May it down by 0.01%, IMHO, cvering short will start sooner than later if the market sentiments improved and we will see a reverse in SP.

Source: http://www.asic.gov.au/asic/asic.nsf/byheadline/Short+position+reports+table