Additionally, 150 000 bitcoin accounts for 0.81% of total circulating supply 18514906 (figure is taken from
https://coinmarketcap.com/currencies/bitcoin/).
It is not a big amount of bitcoin and don't let your mind and actions be affected by news.
If you consider that 150 000 is nothing to be worried about, how much do you think was dumped on the markets in April when
BTC lost half of its value?
2 million?
For the market to absorb this shock without a hiccup you would need 1.8 billion sitting on exchanges and all that in buy orders, do you think here is that much cash? And even if it was, why would people buy during a dump? No, a 150k dump would be worse than what happened in spring and the idea itself would trigger other reactions.
Fortunately, is not going to happen, and in any case, even half of them decide to sell they will not do it all in a 24h interval.
There is no reliable formula to calculate how much BTC is actually lost, but I think it is a much smaller amount than is often speculated (3-4 million BTC).
Let's assume for the good of everyone around here that there are more than that.
Coins that have not moved for decades but are not lost are simply coins that will at one point re-enter circulation and will do so at a cost.
I’ve looked into multiple sources, and the interpretation to be made is what @Lucious states. The deadline is for the plan, with no information yet on how the plan will be deployed, not in what stages.
Not only is the deadline for the submission of the plan, but if worse happens for Mt.Gox's victims the plan can still be rejected in court.