Most dividend stocks pay quarterly, but monthly dividend stocks offer investors regular cash flow that can be reinvested or used for income. AGNC Investment, Main Street Capital, and Realty Income stand out as popular choices for those seeking consistent monthly payouts. These companies distribute dividends 12 times per year rather than four, appealing to income-focused investors.

AGNC Investment (NASDAQ: AGNC) currently offers a forward dividend yield of 13.1%, making it one of the highest-yielding monthly dividend stocks. However, the mortgage REIT faces significant interest rate sensitivity, as it borrows short-term funds to purchase longer-term mortgage-backed securities. Recent interest rate hikes have squeezed AGNC's net interest spreads and caused capital losses, reducing its monthly dividend from $0.20 per share a decade ago to $0.12 today. Shares have fallen over 31% in five years.

Main Street Capital (NYSE: MAIN) operates as a business development company with a $5 billion market cap, distinguishing itself through strong capitalization and an issuer-grade credit rating. Unlike mortgage REITs, BDCs like Main Street invest in small, privately held businesses through debt and equity stakes. Its internally managed structure provides lower operating expenses than externally managed peers, while its asset management business creates an additional revenue stream for investors.