Rates on 10- and 30-year Treasury inflation-protected securities reached their highest levels in almost 15 years on Wednesday, as investors also aggressively sold off long-term government debt. The 30-year TIPS rate jumped 8.7 basis points to 2.576% as of 3 p.m. New York time, the highest level since early December 2008, according to Tradeweb. Meanwhile, the 10-year TIPS rate rose 7.7 basis points to 2.519%, or the highest since the end of November 2008. TIPS yields can reflect the market’s views on government-borrowing costs, as well as the economy and inflation.