Short Interest Feb 15thShort Interest as of Feb 15 is the following, which is about 4.3% of the shares outstanding.
ALTAGAS LTD. ALA TSX 11,758,803 49,491
It'll be interesting what the change in short interest will be in the next report. At average volume 1.6 million shares a day this will be about 7 days to cover the complete short position.
See the following link for the complete list of short interest https://www.iiroc.ca/industry/marketmonitoringanalysis/Pages/consolidated-short-position-report.aspx