Certificates of deposit are offering attractive yields as investors assess the Federal Reserve's Sept. 15-16 meeting and the possibility of a quarter-point rate increase. Fed funds futures indicate roughly a 65% chance of a hike to a benchmark range of 3.75% to 4%. Fed Chairman Kevin Warsh said in Jackson Hole, Wyoming, that stubborn inflation remained a concern, while July personal consumption expenditures inflation reached 3.7% annually, exceeding the Dow Jones consensus by 0.1 percentage point and remaining well above the Fed's 2% target. Sallie Mae recently increased its one-year CD annual percentage yield by five basis points to 4.2%, about 25 basis points above the 3.95% peer median, according to BTIG analyst Vincent Caintic. Other offers include 4.25% from Popular Direct on a 12-month CD, 4.15% from CIBC, 4.3% from Synchrony Financial on a 16-month CD, a similar rate from Marcus by Goldman Sachs on an 18-month CD, and 4.2% from Happen Bank on an 11-month CD. Savers should consider their time horizon, liquidity needs and early-withdrawal penalties, and monitor maturity dates because banks may automatically renew CDs at lower rates.