Any way to get the company list of an industry?

[winterywu]

Hi,

I want to get the company lists of a certain industry under a sector, such as "Computer Hardware (industry)" under the Technology (sector). I checked the yfinance API reference but did not find a way to achieve this.

I referred to discussion #2129 and issue #2152, and also checked the script of const.py of yfinance library. It seems that the EQUITY_SCREENER_EQ_MAP contains only "sector" but no "industry".

So, is any way suggested to get this information? Or, I need to get all company information first, and then to extract their industry, to classfy them?

Thank you.

[ValueRaider]

You could add an industry field #1084

[winterywu]

Hi,

I tried to add an industry field in the EQUITY_SCREENER_EQ_MAP and EQUITY_SCREENER_FIELDS of yfinance\const.py. Take the "Solar" (industry) in the "technology" (sector) for example, I add

EQUITY_SCREENER_EQ_MAP = {
"industry": {"Solar"}
},

EQUITY_SCREENER_FIELDS = {
    "eq_fields": {
        "region",
        "sector",
        "industry",
        "peer_group",
        "exchanges"}, 

But when I conduct the code "r1 = yf.EquityQuery('eq', ['industry', 'Solar'])", there were error messages:

Cell In[94], line 1
r1 = yf.EquityQuery('eq', ['industry', 'Solar'])

File ~\miniconda3\Lib\site-packages\yfinance\screener\screener_query.py:75 in init
self._validate_eq_operand(operand)

File ~\miniconda3\Lib\site-packages\yfinance\screener\screener_query.py:117 in _validate_eq_operand
raise ValueError('Invalid field for Screener')

ValueError: Invalid field for Screener

I guess that may be due to the sequence issue, since in the yahoo! finance website, to select a certain industry, we need to select a sector first. Could anyone help me to figure out how to solve this problem? Many thanks!

[winterywu]

Okay.Good suggestion! Let me try. Thank you very much! 😁 ValueRaider ***@***.***> 於 2025年1月29日 週三 03:09 寫道：

…

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