IIRC the big dip in 2019 was in large part because of one particular fund with a very large holding liquidating, and also because other Wall St. funds were boneheads who couldn’t see Tesla’s value like we did.
So in a sense, you got lucky that 2019 dip happened or you would have REALLY missed out.
I'm not a fan of attributing big moves mostly to one whale or one big fund. That's not how the market works unless you're dealing with penny stocks, yet people love to construct realities they think explain what they are seeing. It's like personifying a storm, it gives them something to relate to.
The big dip of 2019 was most certainly caused by unprecedented Fear, Uncertainty and Doubt, big funds (plural) selling, retail selling, and the popular narrative, as well as the share price, continued to spiral down after I had already decided to build a large position. My thinking was moving opposite the market's thinking because I try not to listen to the noise. I was dollar cost averaging in small bites in early 2019 after it went under $300 ($20, split adj.). I think I even have a few hundred shares from a couple of buys in late 2018 around $320.
But as the bear narrative took stronger hold, and the price continued to decline, I developed new resolve to be more patient with my dollar cost averaging, even as I saw Tesla was actually strengthening as a company. I was watching the market every day ready to pounce so I wouldn't miss out, but it kept going down through the first 5 months of 2019. I think I made some more buys in January and March, $260-$280 range. All my recently purchased Tesla shares were underwater, but I still had more dry powder and wanted to make it count. I made another couple of buys in the $220's, probably in late April/early May, and then on June 4th I saw what was, at the least, a minor reversal. I decided that continuing to watch TSLA like a hawk was a waste of time and I would go all in at $184. I didn't care if it went lower as the value was already such a screaming buy I didn't want to risk dollar cost averaging on the way up, so I immediately doubled my position. This was immediately after it reversed from $179.
The dip of 2019 was very fortunate in that it allowed me to acquire more shares with the same amount of money than if it had never dropped below $300, but I would not have REALLY missed out had it not occurred. Because I had already decided TSLA met my investment criteria and it was just a matter of efficiently building a position in what was already a favorable price range. Not really lucky, just a scenario when patience paid off. And I thank all the TSLAQ types, big oil and legacy auto for bringing all the FUD to a deafening crescendo in the first half of 2019. I probably acquired 40%-60% more shares than had it not dipped.
I will add that I don't normally wait as long as I did to build a position, but this was kind of a special scenario in that the price has already fallen from a brief high of $400 plus, if I recall, and the downward momentum, combined with the deafening FUD created a strong incentive to be patient. Even then, it surprised me when it broke $200. I don't believe in waiting for a climbing stock to correct before building a position, but it often pays to be patient when a stock is declining. But I never set a specific buy price target below the current market price because I'm not a value investor and it might not ever get there; I simply watch it and remain ready to buy if I've already identified it as a "keeper' and I see a possible change in momentum/direction. It still might be too early but it's often better than chasing it on the way up.