Clay Halton was a Business Editor at Investopedia and has been working in the finance publishing field for more than five years. He also writes and edits personal finance content, with a focus on ...

Stephen Simpson, CFA, has 15+ years of experience in financial publishing and editing. He is the operator of the Kratisto Investing blog. Selling company stock can provide cash to pay down debts or ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...