I remember going to my grandparent’s house and watching my grandfather use one of those old ledger books to balance their bank account.

Income goes in one column and expenses go in another. Subtract expenses from income to find out how much money you do (or don’t) have left.

But that’s in the past. Technology has evolved considerably in a short amount of time, and blockchain has replaced the ledger.

In simple terms, blockchain is chunks of transactional data stored in chronological order like links in a chain.

It’s become the new, secure way to balance large transactional accounts.

And the technology (along with company’s using it) are taking the market by storm.

In this episode of The Bull & The Bear podcast, Chief Investment Strategist Adam O’Dell, editor Charles Sizemore and I take a closer look at three well-known companies held by BLOK that are at the center of blockchain: Square Inc. (NYSE: SQ), Visa Inc. (NYSE: V) and IBM (NYSE: IBM).

We’ll breakdown each company and give you our thoughts on whether these are companies for your portfolio or not.