As thebonnotgang(1) stopped updating their database, I was wondering if there are some other free sources of high-frequency data available.

I found a proper tick data api (ca. 25 day history) hosted by onvista which is however undocumented. As some one might be interested I will add a short howto:

urlscheme: `http://www.onvista.de/aktien/boxes/times+sales/export.csv?assetId=[ISIN]&assetType=[AssetType]&notation=[exchangeID]&tradingDay=[TradingDay]`

`[TradingDay]`: Can be calculated by fixing a date e.g. 26-01-2016 as 1453791600 and subtracting the number of days multiplied by 86400. You can find the current trading day here[2]. Just klick on 'Anzeigen' as soon as the page loaded.

`[ISIN]`: self-explanatory I guess

`[AssetType]`: Up to know I was only downloading stocks so I used 'Aktie'

`[ExchangeID]`: I'm not able to offer a full list of all exchanges however '1937897' refers to Xetra and '9385907' refers to Tradegate. You can find more by playing around with the stock exchange dropdown menu [here][3] and looking at `&notation=[***]` within the url.

Example Allianz 06.01.2016: `http://www.onvista.de/aktien/boxes/times+sales/export.csv?assetId=DE0008404005&assetType=Aktie&notation=1937897&tradingDay=1452063600`

(I am afraid this link will be broken in a few days due to the time horizon. So it should serve just as an example)


As onvista is restructuring their homepage `http://www.onvista.de/index/DAX-Index-20735?`***`beta=off`*** I assume they will take this service down.

So did someone discover something similar?

A similar question[4] has been asked several years ago and provides more trivial/googled results.

1. http://thebonnotgang.com/tbg/historical-data/`

2. http://www.onvista.de/aktien/times+sales/popup/Allianz-Aktie-DE0008404005`

3. http://www.onvista.de/aktien/times+sales/Allianz-Aktie-DE0008404005?notation=32810950&activeType=line&activeTab=J1&displayVolume=false&min=0&max=1453935599999&zoom=false&scaling=linear`

4. https://stackoverflow.com/questions/6225902/where-can-i-find-high-resolution-financial-data/6226589#6226589`

I didn't have 'sufficient reputation to post the links in correct mode.