Make "Yield" on quotes More accurate
In the data for quotes on Yahoo Finance for Fixed Income Securities, the "Yield" does not reflect the current yield ... it reflects the yield for the past 12 months. In using Yahoo Finance quotes to make decisions on whether to buy/sell fixed income instruments, one really needs to understand what the current yield is.
For example, https://finance.yahoo.com/quote/SHY?p=SHY , which is the quote for the ticker symbom SHY.
The current quote says that the yield 1.30%. The current yield for SHY according to Fidelity is 30-day SEC yield as of Dec-30-2022 4.30%.
Another example is https://finance.yahoo.com/quote/VGSH?p=VGSH . Yahoo Finance shows the yield for this as 1.15%. That is outdated. The actual yield according to Fidelity is 4.40%.
Surely you realize that interest rates have changed substantially in the past months and when one looks to either buy or sell a fixed income security, one needs to know the most current yield.