IBM's Crash Reveals the Retirement Lesson: Diversify Beyond a Dividend Anchor

IBM’s ~30% one-week plunge despite raising its dividend highlights concentration risk for retirees who rely on a single stock for income. While Social Security provides an inflation-adjusted income floor that isn’t affected by stock swings, selling appreciated shares to trim a concentrated position can push provisional income into taxable territory and threaten benefits. The takeaway is to keep single-stock exposure to 5–10% of a draw-down portfolio, trim gradually (not all at once), harvest tax losses, consider charitable donations of appreciated shares, and structure retirement income in layers anchored by Social Security with fiduciaries focusing on your long-term interests.