What do I need to remember when I am long term investor in stocks?

Do investors with long term view also need to keep an ear to the ground?

As a long term investor in the stock markets, ideally how many stocks should I own in my portfolio? Does that really matter?

I am looking to invest in Nifty or Sensex as part of long term investment. Do you recommend an index fund or an index ETF?

What should I do in Capital Market , Short term Trading Swing Trading or Long Term Trading if I am 64+?

Do I need to track the companies that I am trading intraday on fundamentals?

Do shares continue to be held in the borrower’s name on taking a loan against securities? Or does the lender own them?

Can a borrower pledge more securities in the same loan against securities/shares (LAS)? How long does it take?

Does Term insurance actually help build assets in the long run if compared to the rate of inflation...

What do we understand by short term and long term in equities

I see market uncertainty but am not sure if it goes down. What to do?