MacKenzie Scott, the ex-wife of Jeff Bezos, donated $1.7 billion on Wednesday. By Friday, she'd made it all back — and then some.

· MacKenzie Scott (formerly MacKenzie Bezos) announced Wednesday that she had donated $1.7 billion to 116 different organizations tackling a variety of social issues.
· By Friday afternoon, the value of her stake in Amazon had grown so much that she is is now richer than she was before the gift, according to CNBC's Robert...