The gradual SiriusXM stock acquisitions by Liberty Media continue, as Seeking Alpha reports Liberty Media has converted just under half its preferred shares of the satcaster into common stock. This move adds almost 1.3 million shares of SiriusXM common stock to Liberty's total.

Seeking Alpha notes that by converting less than half its preferred shares, Liberty retains three of its five seats on SiriusXM's Board of Directors, as well as its veto powers. Liberty's reported total stake in SiriusXM is now 49.5 percent. Last week, Liberty informed the SEC in a filing that it now had 49.7 percent of SiriusXM's common shares, though apparently this percentage has changed. Seeking Alpha notes that this decrease is due to a dilution of just under 1.5 million shares since last week.

You can read Seeking Alpha's further analysis of Liberty's stock moves here.