"Go to an Apple chart"... ok you lost me there. You mean their stock price?

Another chart you could go to would be Apple's market share of the phone market. Continuing to grow, at the expense of Samsung's market share, who is continuing to lose; however, they have a HUGE share of the market. So, people are switching, slow and steady. Or, maybe you mean their services growth, also nice, steady, and consistent, which still has lots of room for growth. Once people sample the ecosystem, they rarely leave, yet... again, LOTS of room for growth.

However, all those charts and many more aren't what makes me happiest about Apple. I love that they continue to very strategically innovate a tech stack, hardware, software, platform, services, infrastructure... and they are monetizing every piece along the way, but it's all coming together, all components and support for next gen AR+VR+MR. I'm excited for the tech and their strategy of always creating the premium, focusing on the user, making complex things simple and elegant. Owning the hardware, the infrastructure, and an array of products and services in support of AR and VR, we're going to watch massive growth into a whole new form of entertainment, media, and we're going to see them take over the gaming industry. I think... Sony will give them a run for the money with next gen VR, but Apple will have theirs rolled into the lightest, best package, with by far the largest market of users.

So, looking at a stock price is just not a great way to thoroughly research a company. There is a lot more to a company than the stock price, and Apple not only has plenty of room for growth, but the talent pool, the technology, the drive and innovation, and strong leaders to achieve that potential, to not only capture more market share, but create new markets.