Different places:

First, the locations are different, one in Shanghai and the other in Shenzhen.

Second, the stock code is different. Shenzhen starts at 0 and Shanghai starts at 6.

There are also many differences in trading systems.

For example, according to call auction time, call auction time in Shanghai is between 9. 15-9.25 in the morning, and besides this time, Shenzhen is also call auction between 2.57 and 3.00 in the afternoon.

In terms of custody, the Shanghai Stock Exchange adopts designated trading, that is, when you set up a securities account, you must first choose a securities company as the client, while the Shenzhen Stock Exchange adopts "automatic custody, buy everywhere, buy that and sell that, and transfer it indefinitely".

For B shares, the Shanghai Stock Exchange uses US dollars, while the Shenzhen Stock Exchange uses Hong Kong dollars. Personally, I feel that the Shenzhen Stock Exchange system is more free, but there is no difference in stocks.