I changed the wording (without the "note a") from "consists of" to "that tracks", in the first sentence:
The Standard and Poor's 500,[1] or simply the S&P 500, is a stock market index that tracks[a] 500 large companies listed on stock exchanges in the United States. It is one of the most commonly followed equity indices. As of December 31st, 2020, more than $4.6 trillion was invested in assets tied to the performance of the index.[1]
I noticed that the previous wording of the article could give an incorrect impression about the relationship between the "index" and the "500 companies" in the index. To clarify this, I considered adding a note with references to the article but ultimately decided against it. However, I still wanted to explain the reasoning behind my edit, which is why I am including this note. Thank you to the user with IP address 49.177.30.125 for making good edits to the article.
I want to make it clear that I have never edited this page before and did not make any changes to the contributions of user ExpandD2003. I believe there may have been a misunderstanding, but there is no excuse for making another editor feel uncomfortable. My edits, which I believe are useful, are made anonymously and should not be a point of contention.
I thought ExpandD2003's edit to the article was the best and clearest so far, and I respect their contributions. However, I am afraid to interact with them in any way and ask that they also refrain from interacting with me on Wikipedia. I understand that I am an anonymous IP address and will avoid editing in areas where ExpandD2003 is active.
Thank you for reading.