Dear group 

weeks ago I noticed there could be a malfunction on the package yahoo_get .

I was wrong. It works fine.

After intensive trials with many ISP and hardwares it seems:

a) I had a problem on the firmware of my modem-router, making the line instable;

b) there is an unclear API download policy from Yhaoo. I mean may be there are some hidden limitation about downloading, which infringement lead to a kind of ban. 

But be careful, the ban is silent, so is not easy discover it.

Some people over internet says there is a limit of the tickers number (200?)  for each interrogation. It seems to me only a part of the problem. 

I think there is a problem of speed too: if the interrogation speed is "too high" it seems to be considered malicious from the Yahoo firewall.

If somebody argue 200 tickers are a lot of data i remember the SP500 index is made of 500 tickers.

So at the moment 

- I splitted the tickers list in many groups and 

- I slowed down the speed of the script with this loop 

loop for (r=1; r<1000; r+=1)

        print r

endloop 

I ask 

- if somebody can suggest my a different option to slow down the script because my way lengtens too much the output script.

- do you have some others suggestions or experiences?

Knowlegde to share: finding the tickers  of major stock exchange indexes is not easy. Now I got them, so if  somebody wants to share these lists is welcome.

Regards

Guido