Really cash, your guess good as mine. Have no idea. But since there has been some heavier trade over the past couple weeks, I check the ticker out once or twice a day for no other reason than catching a much larger spike in trade like today. My thinking is that these have got to be multiple buyers. If I wanted to buy 100M shares, I probably could find some MM willing sell me all in one transaction. More buyers...more interest in "something". Gives me hope.