SEATTLE–(BUSINESS WIRE)–(NASDAQ: RDFN) — Homebuyers locked in nearly 70% more mortgages than they did a month earlier on September 23, according to a new report from Redfin, the technology-powered real estate brokerage. The report analyzes mortgage rate-lock data from Optimal Blue. The surge in mortgage-rate locks comes five days after the Fed cut interest rates for the first time in four years. It’s worth noting that the surge in mortgage-rate locks may overstate the increase in mortgage dem