As an individual investor, how can I find out who is selling/buying what stock?

You can see The Numbers of Shares and Orders to be bought and sold on the Market When you have live market data with Market Depth.

A broker who offers this feature is I-Deal Financial Group on its platform.

http://www.i-deal.com.au

I think they have a trial you can access for a while.

If you are asking if you can know the names of the buyers and sellers - that is a different matter.

Brokers are the ones who are, depending on the exchange rules, able to see the names of other Brokers who execute orders for customers.

In the Old Sydney Futures Exchange Platforms you could see which broker was buying and selling.

Lately exchanges have moved to stop outsiders knowing what brokers are doing what business.

The brokers of course are not keen to disclose the names of buyers.

WHO OWNS THE SHARES IN A COMPANY?

What you could do is requisition a listed Company's Share Registry. That will tell you who owns the shares and getting it a later date will tell you who has sold out and who now owns the shares -- slow way to do it!

This was possible in the ASX a few years ago - whether David Tweedie's game playing has changed that I don't know.

There is a report in the weekend papers which shows Insiders (who must report) Buyers and sellers.

So the short answer is for privacy and confidentiality you can not always find out exactly who is buying and selling right now - but you may find out who has been operating in them by the share registry.

watch the stocks' values...they're generally the best indicator as to who is buying and selling.

he got it wrong its trading volume. you see that on each stock on yahoo. For more in depth click on insider transactions. See who in the company is buying/selling