Upgrades and downgrades dates on site are different than yfinance

[tamireiny]

Describe bug

The Upgrades & Downgrades data returned from yfinance is not the same as data presented on yahoo finance.
Looking at PDD:

You can see that the latest data is 01/02/2024, but the list of dates returned by yahoo is:
'2023-08-30,2023-08-30,2023-08-30,2023-08-30,2023-08-30,2023-08-30,2023-05-31,2023-05-30,2023-05-30,2023-05-30,2023-05-30,2023-05-30,2023-05-02,2023-04-25,2023-03-29,2023-03-21,2023-03-21,2023-03-21,2023-03-21,2023-03-02,2023-01-09,2022-11-30,2022-11-29,2022-11-29,2022-11-29,2022-11-29,2022-10-27,2022-10-27,2022-08-31,2022-08-30,2022-08-30,2022-08-30,2022-06-01,2022-05-31,2022-05-16'

It's clear that 1/2/2024, 11/29/2023, 11/7/2023 are missing.

Simple code that reproduces your problem

    ticker_info = build_ticker(ticker)
    ticker_info_data = ticker_info.info
    recommendation_table = ticker_info.get_upgrades_downgrades()

Debug log

II Don't know how to collect

Bad data proof

II Don't know how to collect

yfinance version

0.2.37

Python version

3.8

Operating system

windows

[tamireiny]

Hi @ValueRaider, What do you think?

[ValueRaider]

Compare the query YF sends to Yahoo API vs what Yahoo website sends to API.