Lesson 6 of 8
The lag between rate and filing
The accounts are the slow instrument. A rate change reaches an annual report months later and blended, which rules out several things a reader may want to do.
By Javier Sanz
Founder of ValueScreener. Built Ninety Nine, a securities services provider, and sold it to a tier-one global bank; ran operations and internationalization at Alpaca, the brokerage API.
Who writes thisEditorial processLinkedIn (opens in a new tab)X (opens in a new tab)
In one minute
- An annual figure covers twelve months and arrives 60 to 90 days after they end, so the newest annual reading can describe a period that closed a year ago.
- A rate change therefore appears blended across a reporting period rather than dated, and a filing cannot tell you which month it arrived.
- This rules out any use of filed accounts as a fast indicator, and it is the reason a condition on a filed figure is a slow instrument by design.
The accounts are the slowest instrument in this whole subject, and most of the mistakes people make with credit readings come from forgetting it.
From a rate moving to a reader seeing it in an annual report
Two lags, not one
The first is the reporting period. An annual figure is the sum or the average of twelve months, so a change that happened in month three is mixed with eleven months in which it had not happened or had been fully absorbed. The figure cannot be decomposed back into months from the face of the statement.
The second is the filing deadline. Form 10-K is due 60, 75 or 90 days after fiscal year end depending on filer status, and Form 10-Q 40 or 45 days after each of the first three quarters. Those are outer bounds and a company may file earlier, but nobody files before their year has ended.
Put together, the newest annual reading a reader can compute describes a period whose midpoint is roughly a year in the past.
What the quarterly filing buys, and what it costs
A quarter shortens the first lag to three months and the second to about six weeks. It costs two things. A quarterly figure is reviewed rather than audited. And it has to be compared with the same quarter a year earlier rather than the quarter before, because many businesses are seasonal, which puts a year of distance back into the comparison you are making.
The fourth quarter has no filing of its own. Its income and cash flow figures are the year minus the three filed quarters.
What this rules out
Using filed accounts as a fast indicator of anything. By the time a filed figure moves, the event that moved it is months old and is public knowledge.
That is not a defect to be worked around. It is the reason a condition written on a filed figure is worth writing at all: it is slow, audited, and hard to argue with, which are the three properties a rule you will be woken up by ought to have. A fast instrument would fire constantly on noise.
What it permits
Exactly one thing, and the rest of this track builds on it. Knowing the lag lets a reader schedule: four known dates a year at which new evidence exists, and nothing to do in between. The thesis course calls this reviewing on a schedule, and the lag is why the schedule is the filing calendar rather than the news.
Check yourself
A 10-K for a fiscal year ended 31 October 2025 is filed on 19 December 2025. How old is the period it describes?
- About seven weeks, the gap between year end and filing
- Its midpoint is roughly seven and a half months before the filing date, and its oldest month is over thirteen months old
- It describes the current quarter
Show the answer
Answer: B.
Two lags stack: the twelve-month reporting period and the filing deadline after it ends.Why can an annual figure not tell you which month a rate change arrived?
- Because companies are not required to disclose rates
- Because an annual figure is blended across twelve months and cannot be decomposed from the face of the statement
- Because the figure is reviewed rather than audited
Show the answer
Answer: B.
The change is mixed with the months in which it had not happened. The statement reports the total, not its distribution across the year.What does the lag permit a reader to do?
- Anticipate a filing before it is published
- Schedule: four known dates a year on which new filed evidence exists, and nothing to do in between
- Use filed figures as a fast indicator
Show the answer
Answer: B.
The slowness is the point. A slow audited figure is what a rule you will be woken up by should rest on; a fast one fires on noise.Sources
- Form 10-K, General Instruction A(2): 60, 75 and 90 day filing deadlines by filer status.
- Form 10-Q, General Instruction A(1): 40 and 45 day filing deadlines.
- Toll Brothers, Inc., annual report on Form 10-K for the fiscal year ended 31 October 2025, filed 19 December 2025, accession 0000794170-25-000112.
What this leaves out
- This is a heterodox tradition. The mainstream account of the same phenomenon differs, and nothing here is a forecast or a view on any security.
- The deadlines quoted are the outer bounds in the general instructions to the forms. A company can and often does file earlier, which shortens the second lag but never the first.
- The timeline figure is a schematic of the two lags, not a measurement of any company's reporting.
- Nothing here is a view on Toll Brothers or on any security.