emily: viacom's ceo bob bakish there. coming up, softbank's massive vision fund makes its first ever energy storage bet. we find out what energy vault is with the ceo. next. this is bloomberg. ♪ emily: softbank's massive vision fund made its first ever energy storage that, investing in energy vault. this company stacks concrete blocks in a tower that can store and release energy. it is presenting the system as a bigger and more affordable solution to lithium batteries, claiming it can supply electricity to the grid 24 hours a day. to discuss what this means for the energy storage market, i sat down with the ceo. >> we've designed a very new, innovative system tower. it includes a six arm crane and 35,000 metric ton bricks that are all orchestrated and raised and lowered with a proprietary software stack, so that's the whole system integration. what we do is we take excess energy from solar or wind when it's produced and not needed. that energy is used to raise the blocks. and when the energy is needed by the grid, we lo

cbs and viacom finally inked a merger deal. we will talk to viacom's ceo about synergies and the road ahead. what slowing economy? chinese online retailer alibaba defies the slowdown amidst a trade war with sales surpassing expectations. first to our top story, it was a big week for tech ipo's with fleet work and cloudflare filing to go public. the web security company cloudflare has been in the news lately, given its relationship with controversial message board, 8chan. three alleged gunman posted manifestoes on 8chan before three separate mass shootings in the united states. cloudflare stop providing services after the latest shooting in el paso, left two dozen dead, largely taking the platform off-line. so, is now the time to go public for cloudflare? i discussed it with liliana baker and will curtain. >> like many other tech ipo's, especially in software, it is not profitable. it has a pretty good growth rate though. it's really trying to look at its competitor, fastly. fastly went public earlier this year and is doing ok.

media as cbs agrees to join with viacom. shares of apple and chipmakers sword in tuesday trading after the u.s. delayed tariffs on certain imports including smartphones as well as laptops. trump said, "is to case they might have an impact on people, what we have done is delay it so they won't be relevant during the christmas shopping season." to discuss in washington, the president of the u.s.-china business council. sarah, do we have any idea what the motivation is for the change of heart? sarah: we do know that the news gave a bump to the stock market. we sell retail and technology stocks go up today. there have been some declines in share prices in recent weeks. of course, that is an immediate cheer from the market. what we don't know what was discussed between officials of the china and the u.s. on the phone call. they were waiting on purchases from china on agricultural goods and other promises. really the continuation of trade talks. we don't know what kind of promises were given in exchange for this delay. as you said

suddenly viacom looks like the weaker partner. old, incapacitated, how involved he was in the decision-making was of dispute. what we do know is sherry redstone, his daughter, thought it would be better for the company to get together. first, she fought for control of viacom. she ends up installing bob as the ceo of that company. she tries to get les moonves, ceo of cbs, to merge them. she resists, but he ends up having to leave the job because of accusations of sexual harassment. after discussions of putting them together again, we have an agreement to do it. not after a lot of of fighting and handwringing along the way. thanks so much for all those twists and turns. coming up, stopping the spread of online extremism. we will speak to one guest who has a plan for what tech companies need to do, next. this is bloomberg. ♪ from the couldn't be prouders to the wait did we just win-ners. everyone uses their phone differently. that's why xfinity mobile let's you design your own data. now you can share it between lines. mix with unli