§ 8303 Protected Purchaser Definition

• •A 'protected purchaser' is someone who buys a stock or bond (or part of it) and meets three rules: they pay for it, they don’t know anyone else claims it, and they get control of it.
• •If you’re a protected purchaser, you own the stock or bond free and clear—no one else can say it’s theirs.
• •This rule helps people who buy stocks or bonds feel safe that they really own what they paid for.

You buy a stock certificate from someone at a fair price, and you didn’t know their cousin was also saying they owned it. You get the certificate and put it in your safe.

Since you paid for it, didn’t know about the cousin’s claim, and have the certificate in your safe, you’re a protected purchaser. The cousin can’t take the stock from you.