The fed and DS international banks have the largest amount of gold in the world. You would be better served in stocking up on silver.

Ideally you should have multiple types of assets. I break it down like this

Hard Assets can't be easily turned into cash

Precious metals and minerals- Silver and gold are the common ones but any useful metal is valuable. Iron, brass, bronze, tin. Shoot even some minerals like quartz and diamonds are valuable. Part of what gives minerals value is that if you take away a monetary system they can be used in production of things. They are also valuable because they are interesting to look at and can be made into things like jewelry. You need silver to make the computers to mine for Bitcoin so that will always make it more valuable than crypto.

Crypto- You can't to my knowledge turn this into cash quickly. Especially if you're no in the know about how to do this. There is no place as far as I know that you can turn crypto to cash unless you auction the wallet itself. My personal theory is that crypto is a form of social credit like they do in China BUT if this is the case investing in it give you some advantage. If you can buy social services with it then, to me, that's it's main use. I don't put much money into crypto but I've noticed that there are less than socially acceptable things you can buy with it. If I need a fake ID I know how to pay for it.

Land and Property- Land is hard enough to get in a normal, peaceful time unless you're born with it, work hard enough or get lucky. There's so much paper work and zoning laws that you have to adhere to that it's not easily turned to cash. In an emergency, land is valuable. If you can find and keep some good land in bad time then you can access it's natural resources. Fishing streams, clay deposits, timber are common on many properties. I used to know a dirt farmer who made his money selling dirt off his land for building projects. In a SHTF situation land maintains it's hard asset status because people will defend it to the death and people will try to take the neighbor's stuff if times get rough enough.

Transportation- Transportation is easier to turn to cash than some of the other things but it's still not was easy as some other things. You can trade a vehicle to someone but if there's no fuel how do they get it back to their place? Having a form of transportation in a survival situation is a huge luxury. Even a bike will increase your productivity if you own land. Something like a bike is portable and useful in a urban survival situation.

Weapons- This is a hard asset depending on what state or country you live in. Even in an SHTF situation these maintain a level of hard asset-ness. The "come take it" methodology applies here. Full autos are more expensive. I would learn to turn your weapons into autos. That'll increase the value. It will also increases your value in your survival community and militia.

Soft Assets are things cash, stocks and bonds themselves. I also consider things used in a survival situation that you can buy at a hardware store or market to prep.

Cash- Not only is it a good idea to have US dollars but I would get cash to places you want to go. Pesos, Canadian dollars. This is actually how Soros made a lot of his money believe it or not. He's the definition of a money changer. He destroyed Thailand's economy by buying all the Thai currency held by other counties and then unloaded it on Thailand for a more inflated currency which he then cashed in as that currency deflated. It's good to keep taps on the money in other countries around you. Especially if you're by a border.

Stocks and Bonds- A mean if you want stock after the whole Gamestop thing I guess that's cool. It will pretty much act like social credit for the Fed and Wall Street in the future. I find these to be completely arbitrary for the far future. There's no way people my age are going to retire with a 401k and a profit share pension. The centration wealth in this stuff is too think as we've obviously learned. The exception to this for me however is government bonds. The government can issue bonds to fund public programs. They're safer than Wall Street bonds for the investor but more risky for the government itself. You never know when a person is going to cash in and then pull money from a program. That's why the government doesn't do that much anymore.

Tools- Anything that you can use to work land becomes valuable in a time of crisis. It's easier than making your own tools that's for sure. I'd much rather already have a set of tools and do the work than have to learn how to make the tools before I even do the job. Tools can even help you make more tools.

Perishable Goods and potable water- Everyone needs to eat. It's not super valuable but in a SHTF situation you can get favors for food. Make sure you hide your shit though. Food raids will happen when things destabilize. If you think food isn't that valuable I highly recommend you look up the Venezuelan bachaqueros. Those guys are the big time operators in many Venezuelan communities now after the whole economy collapsed.

Ammo- Ammo is like currency for gun owners. I have a economic system for my ammo. Each box of ammo I own has a recorded price. The price goes up in an emergency situation I'll guarantee you of that. Ammunition is the social credit score for a soldier. There are as many types or ammo as there are currencies. An ammo box might as well be a bank vault.

Fuel- For generators, vehicles, fire and lighting. If you think about it a barrel of fuel give you your own petro-dollar. Those little red fuel containers might as well be filled with liquid gold in the event of societal collapse.

Communications equipment- Lastly this is valuable in coordinating with your survival community but it's staying informed, Short waves, CB's and walkies. Walkies are nice to have so know if someone or something is coming after you after they took the other person's walkie. Short wave lets you see past your confines and get an idea of what's going on in a wider geographical area. This helps with planning your movements. You do need a ways to generate energy to use this but it's benefits out weight it's costs in a SHTF scenario.