This is the 6784th most frequent Japanese word.
ファンダメンタル
"Fundamental" or "basic principle."
Here, "ファンダメンタル" (fundamental) is used as an adjective to describe 'understanding' emphasizing basic and essential comprehension.
ファンダメンタルな理解が必要です。
A fundamental understanding is necessary.
In this context, "ファンダメンタル" refers to the basic principles or attributes important for stock analysis.
株式投資の分析にはファンダメンタルが重要です。
Fundamentals are important in stock market analysis.
Here, "ファンダメンタル" is used as a noun to denote the overarching concept or subject matter of fundamentals.