Stocks, Futures and Foreign Exchange Market End of Day Data in MetaStock and ASCII format

		Stocks, Futures and Foreign Exchange Data for markets in US, UK, Australia, Asia and Europe

US MARKET DATA
Overview \| Layout \| Update Times \| Database \| Maintenance \| Custom Folders \| Pricing

Database Maintenance

TXL Data maintains your US database regularly in order for you to have an accurate record of currently trading securities.

Maintenance is performed on a weekly basis, with maintenance files being published over the weekend to allow the house-keeping to be completed as a stand-alone task.

The following actions are performed as part of database maintenance:

Equity prices are adjusted for changes to a company's capital base (such as share splits, consolidations, or capital restructures)
De-listed securities and associated trading instruments are moved from the main database into a "De-listed Securities" folder (from where you may delete them at your leisure)
Securities that have undergone a name or code change are refreshed to reflect the new name or code.
New securities that have been added to the database are assigned their full names.
Securities that have changed their exchange listing (eg. from NASDAQ to NYSE) are automatically transferred with full trading history intact.

Can't I just use free data and do the maintenance myself?

We wish you luck if you do. We wouldn't want to do these manually each day/week/month and highly recommend you use a service like TXL Data to do all this hard work for you. Why spend all your time maintaining your database when you should be looking for trading opportunities? Here is a report of the amount of corporate actions that we process each year:

Exchange	Capital Adjustments (e.g. splits, consolidations)	Company Name Change	Symbol / Company Name Change	Symbol / Company Name Change and Exchange Change	Delisting
AMEX	18	114	30	30	84
NASDAQ	342	168	600	432	342
NYSE	210	492	66	96	96
OTC	360	450	6228	60	456
TOTAL	930	1224	6924	618	978

Why is it important to have OTC stocks in my database?

Many companies that temporarily fail listing rules on the other exchanges (AMEX, NASDAQ, NYSE) often sit in the OTC-BB market until they can rectify the issue. If you do not maintain an OTC-BB history, when this stock subsequently relists on a major exchange you will be without any trading history. OTC stocks are still quite tradeable.