It is interesting to examine the distribution of the lags between the end of the reporting period and the actual SEC filing date for publicly traded companies. As mandated by Sarbanes-Oxley, many large companies, defined as “accelerated filers” (those with a public float greater than $75 million, at least one previous 10-K filing and who have been subject to the Exchange Act’s reporting requirements for at least one year), currently have 40 days following the end of the quarter and 75 days following the end of the fiscal year to file their 10Q’s and 10K’s with the SEC. Non-accelerated filers have 45 days following the end of the quarter to file their 10-Q’s and 90 days following the end of the fiscal year to file their 10-K’s.
In December of 2005, the SEC adopted amendments that defined a new category of “large accelerated filers” which is defined as those publicly traded companies with a public float of $700 million or more. As of December 15, 2006, “large accelerated filers” will be required to file their 10-K’s within 60 days of the end of the fiscal year. There will be no change in the deadline for 10-Q’s for “large accelerated filers.”
One might assume that the 40 day grace period would be fully taken advantage of by most companies, especially in view of the penalties associated with errors in reporting financial results. So it is no surprise that as of August 29, 2006, about 35% (or about 1,264) of the top 3,589 publicly traded U.S. companies in market capitalization, had exactly a 40 day gap between the end of most recent reporting period date and the filing date with the SEC. So we might ask how the other 65% of the publicly traded companies are distributed.
The actual distribution of gaps between the end of the most recent reporting period and the filing date for a sample of the top 3,589 U.S. companies in market capitalization can be seen in the following chart. Several observations regarding this empirical distribution can be made.

First we observe that there is relatively little early reporting until about three weeks before the deadline. Then there is a very gradual pickup in reporting with obvious gaps for the weekends until we reach 570 filings on the day before the deadline and 1264 on the deadline itself. We should also note that there are non-accelerated filers in the sample which explains the peak at 45 days and presumably a distribution similar to that of the accelerated filer gaps, albeit much smaller.
About 98.1% of the companies in our sample have filed their 10-Q’s within 50 days of the end of the quarter. We publish a list of the really delinquent filers about once per month (the “White Rabbits”). It should also be noted that about 0.5% of the companies in our sample incorrectly specify the end date of the period for which they are reporting (confusing it with the filing date) and these errors had to be cleaned up manually.
The actual shape of the distribution leading up to the deadline is interesting. Since the log of the frequency counts is approximately linear in each of the two weeks preceding the deadline, we are inclined to label the pre-deadline distribution as being exponential and this would be consistent with the assumption that the pressure to complete the filing is inversely proportional to the number of days to the deadline.
Does size matter?
Of course the answer here is yes since non-accelerated filers are allowed 5 more days to file. However, without this effect, companies with a larger market capitalization generally have a tendency to file closer to the 40 day limit. This can be seen in the following scatter diagram of gaps versus market capitalization.

Notice that we use a logarithmic scale for market cap which reveals some rather striking behavior in the distribution. As we have observed above, companies with larger market caps tend to file closer to the deadline.
The Press Release Gap
Regulation FD also has an interesting impact on the distribution of Current Report (8-K) filings that announce quarterly earnings and provide early access to financial statements. Approximately 85% of the companies in our sample, have filed such reports between the end of the reporting period and the most recent 10-Q filing date. This is the same frequency we observed last year as well. The distribution of the gaps between the end of the reporting period and the press release date can be seen in the following chart.

What is striking about this distribution is a clear superposition of a weekly pattern that favors press releases on Tuesday, Wednesday or Thursday, over the course of the three to four weeks leading up to the Sarbanes-Oxley deadline for the quarterly filing.
What about Annual Reports?
The pre-deadline distribution for the gap between the end of the fiscal year and the current 10-K deadline for “accelerated filer” companies is quite similar to the distribution in the quarterly reports.

As in the case of the quarterly reports we see a gradual build-up for 3-4 weeks before the deadline.
We should also note the interesting spike at 90 days (the deadline for non-accelerated filers). Obviously, this spike, numbering 143 companies in our sample of 3,589 companies, corresponds to companies filing their first 10-K or those who have not been subject to filing requirements for a full year and therefore are not defined as “accelerated filers” or those with public floats below $75 million.