Umm, actually no. There are many ways to short a stock. In particular, I started selling Calls way out in the future and way out of the money when Tesla was around 105. As tesla stock price kept rising, I sold more calls with strike price and expiration closer to the real-time stock price.
E.g. early on, I sold the Jan 2015 140 Calls. More recently (yesterday) I sold the August 130 calls (when Tesla hit 130+).
Today, in just one day, my positions are well in the chips and I covered 2/3 of my positions when TSLA dropped below 115 briefly. I will continue the same patterns. If TSLA drops below 100, I will cover ALL my positions and start going long by Selling Jan 2015 65 Puts. You get the idea.