Is a stock's trade size history publicly available?
You can buy the data and process it on your own.  http://www.nyxdata.com/Data-Products/Daily-TAQ
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Is a stock's trade size history publicly available?

### Response:
You can buy the data and process it on your own.  http://www.nyxdata.com/Data-Products/Daily-TAQ