Not that I don't agree with the holding price til expiration, but don't they eventually have to pay since June, July, and other months are still open and still being bought and sold today? Wouldn't they, in theory want the price never to move, ever, to keep any options from being in the money?
When you compare the Open Calls for May 600 Calls to June 600 Calls, which is higher? May Open interest seems higher, with Volatility and Time decay, those 600 will almost become worthless if GOOG don’t close over $600.00 by Friday. Always remember the time decay & volatility. Thre is a reson why they pinnned it down at this price. They not stupid. Its for options Trades.
I think it's a bit early and a bit too high to be pinned for option expiation just yet. Nobody wants to hold overnight (except maybe tonight w/ the conf. call)and certainly no holding over weekend. JMHO