1. Stacking Sats':
This is in short a nick name which in English term would refer to "accumulating Bitcoin". While 'sats' would mean Satoshi, as the smallest unit of Bitcoin, stacking would simply imply heaping or storing up.
With both words combined to give the synonym for dollar cost averaging Bitcoin, it suffices to say that this is purchasing small amounts of BTC on a regular basis over a duration one chooses.
I think this is what they are calling "Dollar-Cost Averaging".
Well, accumulating Bitcoin overtime is for me the safest approach when it comes to investing in cryptocurrency. Buying at once can also be a good strategy, but the bad negative thing on that way is that, you might lose an opportunity if Bitcoin goes even lower in price, and you don't have money to buy it at a lower price.
Overall, stacking sats, or Dollar-Cost Average is kind of the same that you are stacking Satoshis. The only difference I guess is that... there's no difference on it.
2. HODL :
Hold on for dear life!
As of 2013, the term HODL first came on to the scene in a Bitcoin talk forum when a frustrated trader under the username GameKyuubi was letting his bottle of whiskey do the talking and posted the now infamous thread “I AM HODLING”.
The point of GameKyuubi’s post was to let the cryptocurrency world know that, despite the serious fall Bitcoin had just taken, they planned to still hold on to their BTC. What GameKyuubi didn’t know was this simple typo would soon become an iconic term used by crypto communities around the world. HODL started gaining traction in mainstream media and late-night television, in addition to being held responsible for the creation of countless memes.
Well, that term really became popular especially in this forum. This is why I love the forum. There are many things that happened only here, and will only happen here. That infamous HODL, some famous names like Satoshi, Hal etc. posted here, the person behind the infamous 10,000 Bitcoin pizza.
Anyway, I guess there's no need for an explanation with this one already because it's on the name already. On the other hand, I will not do this one because it's like "You will hold your Bitcoins until you die." which is not one of my plans. I still want to give my Bitcoins to some other people if my time comes, but anyway, I hope that people took "Holding on for dear life" phrase as "Holding long term".
3. Trading Bitcoin:
I included this as one investment strategy because one would have to have invested some funds in Bitcoin, before it could be used in whatever format one deems fit for the best profit taking at the time. One way besides the others aforementioned for short term gain is to be a merchant trader. However, gains or losses from trading may be affected by the market volatility.
This is where most of the profits are.
At the same time, this is where most investors are losing money.
The most riskiest way of the three. Trading Bitcoin is considered an investment because in order for an investor to trade, you must invest Bitcoin. Still, those expert traders are the ones who are gaining the most profit thru trading, and where they are getting those profits? From the investors who are losing on their trades.