Wow!! How can you let that much cash sit there and not be capable of figuring out a myriad of ways of putting it to work??!! Show some creativity and some gonads and earn those fat corporate salaries you are collecting!!
FB is sitting on over 20B in cash.
GOOG is sitting on over 75B in cash. They could buy TWTR and it wouldn't take long before their cash on had was back to current levels.
MSFT is sitting on over 100B in cash. Same situation. They could buy TWTR and replenish the cash they used to buy it in no time.
AAPL is sitting on over 55B in cash. Same situation.
You can believe that more than one of these companies is interested - and possibly others as well. Right now they are hoping the stock will continue to struggle - but when it turns don't be surprised if more than one of these steps forward immediately - and don't be surprised if they're not alone. There's a little poker going on right now but it may backfire on those who are trying to play it close.