Using Firefox, I don't see the charts updating. How do I fix this?
By default, Firefox may not check for newer versions of pages unless they significantly change. Open Firefox and type about:config in the location bar. Find the setting for browser.cache.check_doc_frequency. Right click on this and choose modify from the popup menu. Change the value to 1 and the browser will now check for a new version of the page on every page load. If you do not want a permanent fix for this, you can hit the refresh button after you request a new fails to deliver chart. It will display the new chart image.
How often is this data updated?
This data will be updated as soon as the SEC provides a new update. The last update included 2nd half of Aug 2016 data and was added on 9/15/2016. As of July 2009, the SEC will begin releasing updated data on a two week delay instead of quarterly.
How accurate is this data?
is directly from the SEC which states "We cannot guarantee that the data will be
posted by a particular date. We cannot guarantee the accuracy of the data." For
the purposes of charting, the SEC data was adjusted by this site in the
following way: Where the SEC did not track closing prices, they had inserted a
"." into the data. These "."s were changed to "1"s.
How did the SEC track this data?
SEC: "The values of total fails-to-deliver shares represent the aggregate net
balance of shares that failed to be delivered as of a particular settlement date
if the balance is 10,000 shares or more. If the aggregate net balance of shares
that failed to be delivered is less than 10,000 as of a particular settlement
date, then no record will be present in the file for that date even if there are
fails in that security. Fails to deliver on a given day are a cumulative number
of all fails outstanding until that day, plus new fails that occur that day,
less fails that settle that day. The figure is not a daily amount of fails, but
a combined figure that includes both new fails on the reporting day as well as
What is a Failure to Deliver?
to deliver is recorded when a seller does not provide the shares of stock that
were sold within the required 3 day settlement timeframe. From the SEC:
"Fails-to-deliver can occur for a number of reasons on both long and short
sales. Therefore, fails-to-deliver are not necessarily the result of short
selling, and are not evidence of abusive short selling or “naked” short
Can I use and republish these charts?
may use the chart images in any way you like. However, they are deleted
automatically by the server shortly after they are served. You must download
them by right clicking on the image and saving it to your machine. From there
you can repost the image wherever you like.