Bitcoin hasn't been here for 10 years, so basically, according to your definition of a long-term holder there is no one fitting in that category, and so none of them possess at least a single satoshi !

You can check bitcoin richlist here https://bitinfocharts.com/top-100-richest-bitcoin-addresses.html
However its hard to find out how many of those addresses belongs to long term holders but we can make guess looking at last sent transaction from each of those addresses.

I don't think majority of bitcoin traders hold bitcoin for long term, most of them just keep on buying/selling on every price swing to make some profit. But we can assume 1-2% of bitcoin holders are holding bitcoin for long term and are passive traders.

That's a cool list. Going to check it out and run some numbers myself. Do you know if any of those addresses are claimed by exchanges or any whales?

Frank Lefty Rosenthal Signing Out.

We can't just know the total number of long term bitcoin holders because there is no any actual data regarding this, bitcoin ledger only contain bitcoin address and total bitcoin it have right now. And also most of the bitcoin holders try to sell off when price get pumped high like $1000 right now, which is quite profitable price for most of the bitcoin holders to sell all and wait for small dump to buy cheap.

I would imagine there is not as many as you think. Most people buy and sell (use) Bitcoin, but it takes a lot of patience to hold your BTC through the ups and downs since 2009. Most of the long-term Bitcoin holders will be smart investors who had capital to speculate with. It's hard to believe anyone that mined BTC in the early days and "forgot" about their coins could not know about it by now.

Wow, new information to save. Who they are that have so many bitcoin sit on their wallets.
Takes time to check each one, and seems as usual activities of wallet such as giver of salary, I don't know.

I don't understand the point of daily traders to sell and get some profits instead of saving in your wallet.
I mean if bitcoin price always increases then you should buy in the next time but at higher price.

I guess I would count as a long term holder. I have about 20 btc that I collected from a faucet run by Gavin Andresen that handed out whole bitcoins and I guarantee I will still have some at the 10 year mark.

The clear answer for you.

There is no such definite answer. Excepting use the formula won't be guarantee will give 100 accuracies.

Because a lot of the new holders were coming in this year.

Assuming they are want hold their bitcoin over 10 years and that's no sense just hold a little of bitcoin amount.

There are no statistical datas to check if how many are the long term holders of bitcoin with huge quantities. Like what the other said, bitcoin has not reached the age of 10 years old and possibly you are thinking about the future. In the future when government puts his nose into bitcoin and requires all users to validate their accounts then that will be the time that we can check since there will be a database that shows how many long term holders based on their records.

I would guess that there are a lot of long term investors and a lot that are trading. I think the minority are actually using Bitcoins for purchases.