Something changed this morning, several big buy orders, 50k,...

Something changed this morning, several big buy orders, 50k, 28k, we havent see that the last week (i have only been following recently).

Previously there were sellers sitting on the sidelines taking out any big buy orders that came up, these big blocks give them the opportunity to accelerate their selling without pushing the price down to what it was.

Market Depth
Bids 78
Buyers 490,401 Shares
Asks 38
Sellers 185,404 Shares

There was some shares came out of escrow, expected that to increase selling rather than buying, so not sure if or how that might be related.