first to our lead -- another wild ride on wall street. this one with a good ending, stocks rallying the most since 2011. i want to get straight to matt miller in new york. matt, when it comes to tech, the fab five all up. but talk to me about volume into his buying. if you look, for example, at the first six gainers, only exxon is a non-tech name. all those you mentioned plus microsoft, apple, google, facebook, amazon. the buyers here were people who believe that we have put in a bottom, if they are not daytraders. with such incredible drop over the last seven days, we have seen the dow erase 2000 points. it takes a while to put in a bottom. technicians will tell you after a drop like that over such a not period of time -- it's necessarily fully in today but maybe this is the inflection point, and the buyers believe the u.s. economy can withstand it, the chinese economy is stabilizing, and that commodity rises may have bottomed. emily: matt miller in new york, thanks so much. i want to talk about -- even though the public markets are bouncing back, what lies ahead for silicon valley? we have all these unicorns. jeff is back with me now, an investor in fitbit, among many others, and he alswe also have ate, whose company is valued $1.5 billion. speaking of unicorns -- people are saying that there could be a downturn here in silicon valley. all, i hate the term unicorn. it didn't turn out well for the unicorns. the boat went without them. concept is not a great thing. that companies are valued over $1 billion and there are more. when companies think that the valuation is the end, i think it is screwed up and we have a market that may be screwed up. emily: i just spoke up with mark benioff about this whole unicorn concept, and he warns that there may be trouble ahead for these so-called unicorns -- take a listen. mr. benioff: i think we will start to see a lot of debt unicorns, because the icr sesiness is rais -- becau what i see our business is not focused on their fundamentals. uni-corpses. i agree. uni-corpses. i agree. go and raise money at very high evaluations and duell. but if you do that and then you get stuck, you have this very high valuation to go public and you will end up as a potential -corpse. this environment has a lot of volatility and the certainty and my advice is don't try and maximize the valuation, maximize the value of the investors and make sure you have people going through long-term themselves so they can help you weather the storm. emily: david, how much attention are you paying to the environment? are you changing anything within the company, are you doubling down, changing strategy, being more careful? dave: of course. as a ceo you have to balance two things -- growth and profitability. , and he sharesr with all his investee's. honestly i almost disagree with that point. the only thing that matters is customer value. in the marketrded for evaluation. i can generate more revenue and i am creating value for my customer. emily: what is it you disagree with? dave: to some degree, it doesn't even matter to the investor. what really matters is creating the value in the market. definitely you want investors who will help you build your business, but valuation is an e nd, not a means. jeff: i will disagree -- typically investors added value. in emily: what are you seeing at the earlier stages? are you seeing a change in the number of companies to pitch you? a change in the quality? shifted, i would say four or five years ago. at my bottom line is how do i grow revenue across the company, whether it is business and sales, whether it is hired and then thousands of engineers that are hired, or more recently, marketplace for educational content -- they are rocketing from revenue perspective. we can create value for customers and we will be rewarded with the right investors investing the right valuation. your point about numbers -- we still see a pretty crazy amount of outflow. we are just out of the batch of 104 companies, and the valuations are very solid. emily: not expensive? jeff: there is always a premium -- emily: what about in general? jeff: in general, everything we s will have ay grounds of 2,000,000-3,000,000, with some commanding more. $2 million-$3ollars-$3 million or commanding some more. that is pretty unique. there is a lot of maturity, and there was the marking nature of this batch. a lot of companies were more mature, more than three or four years ago. emily: let's talk about twitter -- twitter has been feeling a lot of pain for a lot of reasons. they broke their ipo price. jeff, you sold a couple companies to twitter. who should be ceo? who will be ceo? not --'m here's the challenge. why is twitter in the situation they are in? emily: user growth. dave: its value to the customer, and i think it's innovation. when you look at companies who hit that stage of growth and plateaued, like amazon. was essentially a bookstore and then they began to innovate, and they created more value. you saw amazon on-demand. the current leadership hasn't figured out how to continue to innovate. i will go back to my tagline -- it's customer value. jeff: twitter is still too complex to use to appeal to the mass market. it is a great media distribution mechanism for brands, but for the average user, you don't understand all those limitations. emily: what about a triumvirate with ceo, adam baines? you think they need new blood? jeff: there is a way to go. we will see whether having founders at the helm of the company will change the trajectory in terms of user growth and innovation, or they because founders out, those founders who have been controlling the product direction for seven, eight years are potentially hampering the innovation. you have analysts saying acquisition is inevitable. jeff: people can afford it now. dave: it's a pretty small list of who can acquire it now. for twitter. emily: [laughter] we are definitely continuing together. dave, jeff, you are sticking with me. coming up, google unveils an archenemy for twitch. we will tell you about the battle for the most giving viewers, next. ♪ emily: breaking news -- workday shares are rising in extended trading. thanreported a better estimated quarterly revenue, saying it has surpassed its recruiting goal. shares are up 4% right now. it is google versus amazon in the fight for gamers. youtube officially launched a standalone site, youtube gaming, a platform for people to watch live streams of other people playing video games. it is a direct competitor for twitch. with me to put it in perspective, jeff and dave. lucas.m l.a., talk to me about you to gaming -- it does not cease to amaze me how many people like to watch other people playing games, but this is a huge market. lucas: yeah. gaming is the second or third biggest topic on youtube after music. music videos get watched the most, but if you look on the charts of the most subscribed you to channels, gaming is two, and four is pewdiepie, who has 40 million subscribers. mostly what he does is talk to people while he's playing video games. gaming is huge on youtube -- they have known it all along. if you look at what youtube is trying to do, they are cultivating specific sites, specific experiences for fans of a particular type of video. they have a new music service and now they have gaming -- they are trying to make them messy world of youtube for users and advertisers. emily: david? you are laughing. [laughter] david: i have an 11-year-old little boy. i, we sit down together and we watch youtube games. games, weow to write watch people play games -- i think it is brilliant. googley as it sounds, just got upgraded by goldman sachs today, and it is because, frankly, the public markets are making companies more responsible. they are going to google saying, you have to generate more revenue with better margins. an existinging asset that has a massive subscribership and driving more value out of it. i am sitting with my 11-year-old it watching this. i think it is ingenious. emily: jeff, is this an opportunity? jeff: it is so obvious that youtube should have this. curse has youtube channels with tens of millions of monthly viewers, and you wouldn't believe how much time fans of spend watching other people play video games. it makes a ton of sense, and it's good for the market. dave: we see the same thing in our industry. we have an acceleration platform, and that is one of our fastest -- it might be our fastest-growing segment. emily: bringing out the inner competitor in all of us. lucas, thank you so much. dave, jeff, thank you both today for joining me. now to the race to make our homes smart. oven built by former apple engineers and designed by robert brenner. i went inside the june kitchen here in san francisco to test it out. ♪ june, thet ultimate sous chef. it is so smart it can detect what food you want to cook and how to cook it. >> we are taking from the latest and greatest of machine intelligence and machine learning, computer vision and deep learning. emily: parked a guy with a splash of machine learning combining a lot of tech already in the kitchen, like a scale or the temperature probe. but with june, it is all about one device to help you become a better chef. so we are in the kitchen, surrounded by ingredients. how does it work? >> let's say i want to make a stake. the of it recognizes the steak, and it knows what the starting temperature, and can ask you the preferences. the oven takes care of everything. emily: you are an inventor on a number of camera patents -- there's a camera in the oven. >> the difference is that the camera is used to capture pictures -- we analyze pictures on a streaming basis. emily: this all sounds great and at almost $1500 it costs a lot more than your average toaster oven and can't cook larger meals. there is also competition. the market andon only costs $250. tech companies raised over $1 billion in 2014. witho you see this sitting other connected product out there? >> the internet of things as a concept is in very early stages and we are really excited for the next phase, when things are able to start working together and become more interconnected. emily: the june smart of -- we will see. ♪ emily: another story on the edge of our seats -- a camera reporter in virginia was shot dead this morning during a seemingly routine live shot about local tourism. the alleged shooter then started tweeting while he was on the run. turns out he was a former employee of the local tv station. former reporter, in fact. he went by bryce williams on air and on twitter. he managed to tweet about what he had done and why, but he filmed the shooting, posting the horrifying video to both twitter and facebook. both accounts were shut down, but not before the clip was shared across social networks with those violent images auto playing in newsfeeds. the suspect later shot himself and he is now dead. the woman they were interviewing was also shot and is reportedly in stable condition. it is time now for our daily and today's number is 75 million -- that is how many pcs have installed windows 10 four weeks after the latest release. that is according to the vice president, who tweeted that this morning. microsoft says windows 10 has been downloaded in 192 countries, and 122 years of gameplay has streamed. big numbers so far. it is likely getting a lift from the fact that the upgrade is free. we will be tracking these numbers to see if microsoft can meet its own target of a billion devices in two to three years. the long anticipated steve jobs by optic by aaron sorkin -- biopic by aaron sorkin premieres in october. it interviews real-life friends and colleagues. including my next guest -- her agencyrelations helped to bring it off the ground. she joins me here in the studio -- it's fascinating to see with anyone who worked with steve, but you have seen the film. focuses on the mac launch -- what did you think? >> it is a wonderful film. it is an incredible character study of an incredibly complex man, and i think aaron did a famil fabulous job. emily: i interviewed aaron sorkin on studio 1.0 and he was quite proud. jobs -- i caneve say that the rest of the world may not agree, but this is the first time i have felt at the end of the script like i wrote exactly what -- exactly the movie i wanted to write. emily: you even met the actress that plays you. did she get it right? >> i did beat her -- she is a wonderful young lady and i feel honored to be played by her. aaron did a great job of portray me in the film. it is a very small role but it is professionally done. emily: is still looms so large -- what are your biggest takeaways? andy: steve was an amazing later, and he did three things incredibly well -- he inspired he workforce incredibly, stretched each team member way beyond what they thought their limits were, and he was really bold and really brave. he did whatever it took to make it happen an. emily: what do you think of apple today when you see how they are marketing things? that is your bread and butter -- when you see the apple watch, for example? andy: i love the apple watch. i think steve would be very proud of the apple watch. i think they have done a good job. i think they need to speed up on innovation -- they slowed down a little bit. but from a marketing perspective i think they are doing a great job. emily: what specifically are they doing well? think they are capitalizing on the cold like nature, if you will, of the capital community -- of the apple community. we didn't realize it was going to be a cultlike product. as soon as we did we started capitalizing on it and making a community out of it. emily: you still run your own agency here in silicon valley, is there anyone out you who reminds you of him? andy: yes. i worked with hundreds of ceos in my lifetime, but only two embody some of the traits he had -- one is john chambers, the other one is reed hastings. there is a third ceo, brian chesky, from airbnb, that i have great respect for. emily: what is it about these three people? andy: they all do those three things well. they inspire their workforce, stretchable beyond their limits, and are really bold and brave. they don't care what other people think of them and they do it in different ways. john chambers was very operate and conservative and professional, reed hastings is very earnest and high integrity about everything. brian just seems to be going for it and i love that. emily: do you think apple will make a car? [laughter] andy: yes, i do. steve told me a long time ago that he was making appliances and he wanted to put a motor in every box, so every time you on rapid apple product, it would just work for you beautifully without any effort. emily: i, for one, can't wait to see the film -- you think it will get good reviews? people have tried to do it is about steve jobs that they didn't quite work out. andy: yet, but they didn't have aaron sorkin. it will work even if you don't know anything about silicon valley because it is an incredible character study. emily: i am optimistic. thanks so much. that does it for this edition of west."berg ♪ mark: by mark halperin. john: and i'm john heilemann. and with all due respect, you are the only one who knows how to escalate the situation. ♪ mark: hello, hello from trump tower in new york city. we are the first reporters to get a tour of the trunk campaign headquarters in this very storied building. but first, our guest tonight joins us right now. he is the man of the hour and the man of the tower, donald trump. make you for joining us, mr. trump.