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The Margin of Safety Letter

Equity research built from the filing up, not the headline down.

We read the 10-Ks and 10-Qs, build the model, and write down the assumptions we used to get to fair value — so you can check our work instead of taking our word for it.

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FreeEvery report in full — no paywall on what's published today
10-K · 10-QPrimary filings first, not press releases
Buy · Hold · SellA plain call on every note, with the numbers shown
$25 / moPremium tier launching Winter 2026, on top of the free archive

How a note gets written

Method

Start with the filing

Every note begins in the 10-K or 10-Q, not the press release. We flag where management's framing and the numbers in the footnotes disagree.

Build the model in the open

Revenue build, margin bridge, and a discounted cash flow with the growth and discount assumptions printed on the page — not buried in a black box.

Show the margin of safety

We compare our fair value estimate to the market price and say, plainly, how much cushion that leaves — and what would have to be true for us to be wrong.

Latest research

Four live notes are out. Every note is free to read in full, with a downloadable PDF.

View all research →
Live note
$MZTI · Initiating Coverage · Oct 19, 2026

The Marzetti Company: fair value $160.33 against a $104.47 price

A DCF-based BUY, with the economic-profit cross-check as the dissent that matters. Scenarios, peers, shareholders and every source.

Read the note →
Price$104.47
DCF fair value$160.33
Implied+53.5%
RatingBUY
Live note
$GABC · Initiating Coverage · Oct 17, 2026

German American Bancorp: fair value $40.57 against a $48.79 price

A HOLD on an excess-return model, with the price near the top of the range and the base case below it. Tangible book, peers, shareholders and every source.

Read the note →
Price$48.79
Fair value$40.57
Implied-16.8%
RatingHOLD
Live note
$DCI · Initiating Coverage · Oct 13, 2026

Donaldson Company: fair value $88.79 against an $87.56 price

A DCF-based HOLD, with peer multiples from 13.5x to 33.9x earnings that cannot settle the question. Guidance, Facet, shareholders and every source.

Read the note →
Price$87.56
DCF fair value$88.79
Implied+1.4%
RatingHOLD
Live note
$CHH · Initiating Coverage · Oct 12, 2026

Choice Hotels International: fair value $43.58 against a $105.64 price

A DCF-based SELL — and why the closest peer, Wyndham, points the other way. Thesis, risks, sensitivity grid and every source.

Read the note →
Price$105.64
DCF fair value$43.58
Implied-58.7%
RatingSELL

Interactive valuation model

Calculate intrinsic fair value using normalized earnings multiples or a multi-stage Discounted Cash Flow (DCF) model with an explicit margin of safety.

Free tool
Estimated intrinsic fair value
$195.00
+8.3% vs. Current Price
Margin-of-safety target entry (20%)
$156.00

Educational model based on user-supplied parameters. Multi-stage cash flows discount near-term projection periods separately from long-term perpetuity terminal value.

Inside every note

Anatomy
01

Thesis

What the market is missing, in plain language.

02

Risks

What would have to be true for us to be wrong.

03

Model

Revenue build, margin bridge and DCF with assumptions printed.

04

Sources

Every figure traced to a filing, transcript or public dataset.

Questions

Straight answers

What's free, what isn't, and what we do and don't do.

Is NovaRock research really free?

Yes. Every report we publish is free to read in full — thesis, risks, cited figures and a Buy, Hold or Sell call. A $25/month subscription tier launches in Winter 2026 to add extra reports on top; it will not gate anything that is already free.

Is this investment advice?

No. NovaRock Global Research publishes general-interest financial research. It is not personalized advice, a solicitation to trade, or a registered investment adviser. Read the research disclaimer for details.

Who can subscribe?

We cover U.S.-listed equities for international readers. The service is not marketed or offered to residents of India, and subscribers confirm they are outside India when they sign up.

Where do the numbers come from?

From the 10-K and 10-Q first, then transcripts and public datasets, each cited inline. Where we make a forecasting assumption rather than cite a fact, we say so on the page.

When do live coverage notes start?

Our live notes, The Marzetti Company (MZTI), German American Bancorp (GABC), Donaldson Company (DCI) and Choice Hotels International (CHH), are published now, with a downloadable PDF. More follow in the free letter, and the premium tier launches in Winter 2026.

Can I request coverage of a company?

Yes — use the contact form. We read every request but cannot guarantee coverage, and we never accept payment for coverage or a favorable conclusion.

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