[GNC] AlphaVantage Deal

[Richard Ullger]

On 27/08/2018 04:34, Ethan Swint wrote:
> Hmm... not a lot of response from the user on this topic. I'll bubble it to
> the top this time and let it go from there.
> 
> The main theme was that the AlphaVantage team is open to a lower-priced
> premium option that would give 120 quotes/minute for up to 128 quotes/day,
> then revert back down to the 5 quotes/minute. It works perfectly for me, as
> I have many securities that I'm tracking, but only use GNC to sync once a
> day. If you are interested in something along similar lines, feel free to
> email me separately and let me know how much you think this service is
> worth to you.
> 
> I'll have to pull Bruce's implementation and kick the tires on it - that
> could be the solution that works for me.
> 
> Regards,
> Ethan
> 

Personally, I gave up with AlphaVantage some time ago as I found them
too unreliable.

Apart from the issue of missing stock quotes due to the volume issues
that have been discussed, I also had the following issues.

- I usually download prices at least 60 minutes after market close each
day. If I didn't get to download prices on a Friday evening and ended up
downloading them on a Saturday or Sunday, the prices would download 100
times too small. I would notice this because my total assets would take
a dive.

- Frequently, downloaded prices would be way off the actual closing
price for many stocks.

- Currency rates would fail to load 100% of the time.

I moved to yahoo_json which is working well for me. I had an initial
issue where prices for securities quoted on the LSE were downloaded 100
times too big in pence rather than £'s but that was easily fixed by
amending the YahooJSON.pm perl script to divide the prices by 100.

Also since moving stock price download away from AlphaVantage, currency
rates are now updating due to the reduced volume.

Regards,

Richard