If you look at the tape for the past few days, you will see that...

If you look at the tape for the past few days, you will see that someone is selling down in blocks of approximately 100,000 at various levels to arrest the rise in the share price.

My guess is that someone holding a substantial amount of shares wants to arrest the buying so it doesn't rise too quickly or spike, and is 'manipulating' (for want of a better term) the price to promote a steadier increase and/or accumulation.

No, it's not me.

Encephalon