Building Your Value Watch List

Building an investing plan

You now know how to read the ratios and how to estimate what a business is worth. The missing piece is the thing that decides when you actually use any of it.

An investing plan is your rules, written down before you need them: what you'll consider owning, when you'll buy, how much you'll risk, and when you'll get out. It isn't paperwork. It's the difference between a decision you made and a decision that happened to you.

The rest of this lesson and the next one walk through a sample plan for value investing. Treat it as a starting draft, not a template to obey. Its objective — the sentence everything else serves — is straightforward: own financially solid companies whose price sits meaningfully below your estimate of what they're worth.

A complete plan has six sections:

1. Objectives — what you're trying to accomplish, in one sentence.
2. Watch list criteria — what has to be true before a stock is even a candidate.
3. Entry rules — what has to happen before you buy.
4. Money management rules — how much you risk on any one position.
5. Exit rules — what makes you sell, in both directions.
6. Routines — what you actually do daily, weekly, and quarterly.

This lesson covers the first two. The next one covers the other four.

Why the watch list is the part that saves you

Here's the honest reason a watch list exists, and it has almost nothing to do with efficiency.

By the time you've read a company's filings, watched its stock for a week, and told a friend about it, you are no longer a neutral judge of it. You have a stake in being right. Every number you find after that point gets graded on whether it agrees with you — that's confirmation bias, noticing the evidence that supports you and skating past the evidence that doesn't. It is not a character flaw. It's standard-issue human wiring, and it is expensive.

A watch list is how you get ahead of it. You write the criteria first, while no particular stock is on the line and you don't care what the answer is. Then stocks either clear the bar or they don't. When one you've grown fond of misses on debt, the rule was set by someone with no opinion about it — you, last month.

That's the whole trick. Decide before you care.

The funnel: three passes, in order

Video coming soon

This lesson explains the idea in full without it.

There are thousands of listed stocks. You're looking for a short list you can actually follow. So you filter in three passes, cheapest work first:

1. Screen on the numbers. Use valuation and quality ratios to drop companies whose financials say they aren't value candidates. This is fast and it removes most of the field.
2. Look at the chart. Use technical analysis — reading price and volume history — to set aside stocks whose price is behaving in a way you don't want to step into yet.
3. Estimate intrinsic value. For the handful left, do the real work: estimate what the business is worth and compare it to the price.

What comes out the far end is your watch list — stocks you've already judged worth owning at the right moment, which you now monitor for that moment. Nothing on it has been bought. That's the point.

The order matters, and it's about your time. Step three is hours of work per company. Steps one and two cost minutes. Do the cheap filtering first so the expensive attention lands on the few names that deserve it.

Step one: screen on the numbers

Every broker offers a stock screener — a search tool that filters the whole market down to companies matching conditions you set. The buttons differ from one to the next; the idea never does. You give it rules, it hands back a list. Financial data sites do the same thing, and most will show you an industry average next to each company's figure, which is what makes a ratio mean anything.

Here's the sample plan's screen.

Now read that table again, because the numbers in the middle column are the least important thing in it.

They are one investor's settings. Not laws, not findings, not thresholds anyone tested and published. Somebody chose them, and someone equally competent would choose differently. A P/B under 1.0 barely exists in software, where the valuable assets — code, engineers, customer relationships — never appear on a balance sheet, so book value understates the business badly. Meanwhile a bank at a P/B of 1.0 is unremarkable. A utility carries debt that would be alarming at a consumer-goods company, because its revenue is regulated and predictable. Tighten every screw at once and your list comes back empty; loosen them all and you're back to thousands of names and no filter at all.

So the column that actually teaches you something is the third one. Once you know why a criterion is on the list, you can set the number yourself, defend it, and change it on purpose rather than because a screen came back disappointing.

The debt criterion is worth an extra beat, because there's a plain-English version of it. Picture a lender deciding on a loan application. They don't only ask what you earn. They ask what you already owe, whether a new payment crowds out the old ones, and whether you've been covering ordinary expenses by borrowing more. Those are the same three questions, asked of a company. Debt isn't a sin — it's a fixed obligation that doesn't care whether business is good this year.

One more thing about the screen: a screener applies your rules to reported numbers. It cannot tell you the low P/E is low because the industry is dying, or that the balance sheet is clean because the company sold the division that made money. What comes back is a list of things worth investigating. It is not a list of things worth buying, and treating it as one is the most common way this tool gets misused.

And even when you're right that a stock is cheap, the market is under no obligation to agree with you inside your time horizon. Being early and being wrong pay out identically for years at a stretch.

Step two: look at the chart

Now take the survivors and pull up their price charts. This step is a filter, not a forecast.

Some strict value investors skip it, and their reasoning is sound: every filter you add throws away good opportunities along with bad ones, and this one throws away stocks purely on price behavior, not on the business. That's a real cost. Know that you're paying it.

What you're checking is whether the price has settled down enough to step into.

A downtrend is a series of lower lows and lower highs — each bounce fails sooner than the last. Some of the cheapest-looking names on your screen are cheap because the price has been falling for a year and hasn't found a floor. Buying into that has a nickname among people who've done it: catching a falling knife. It works when you're exactly right about the timing, and the timing is the part nobody is reliably right about. Downtrends outlast patience, including in companies that turn out fine.

Figure

A strong uptrend — higher lows and higher highs — is the opposite problem and it's a nicer one to have. Nothing's wrong with the stock. It's that a rising price is eating exactly the gap you were trying to buy. The cheaper it was when you found it, the less of that discount is still there by the time you act.

Figure

What this plan looks for is basing — a stock whose downtrend has stopped making lower lows and flattened into roughly equal highs and lows. Sellers have run out of urgency without buyers having taken over yet. The price is going sideways. That flat stretch is sometimes the first visible sign that the market is starting to see what you saw, and it's cheap to be early to.

Figure

Step three: estimate intrinsic value and margin of safety

What's left is a short list of companies with defensible numbers and a price that isn't in freefall. Now do the work you learned to do earlier in this course: estimate each one's intrinsic value — your own appraisal of what the business is worth — and compare it to what the market is charging today.

This is the step that separates stocks that look cheap from stocks you have actually appraised as cheap. Everything before it was elimination. This is judgment.

The gap between your estimate and the price is your margin of safety, and it's there because your estimate is going to be wrong. Not might be — will be, in some direction, by some amount. Every input is a guess about the future: growth rate, discount rate, what the business looks like in year ten. The margin is the room your guesses get to be wrong in without costing you.

This sample plan asks for at least a 25% margin of safety before a stock earns a spot on the watch list — the same threshold used in the intrinsic-value lesson. And like every number in this lesson, that one is a choice, not a finding. It's a statement about how wrong the author expects to be. Demand more and your watch list gets very short; demand less and small estimation errors eat the whole thesis. Neither is wrong. Pick a number you can explain, and notice if you ever find yourself lowering it for one specific stock you like — that's the moment the watch list was built to catch.

What you have now, and what's next

At the end of these three passes you have a watch list: a short set of companies you've decided you'd own, at a price you've decided on, for reasons you wrote down while you were still calm.

You haven't bought anything. That's deliberate — and it's exactly where the next lesson picks up. Knowing what you'd buy is only the first half of a plan. The other half is when to actually put money in, how much of your portfolio any one idea gets, and what makes you sell — the entry rules, money management, and exit rules from that list of six, plus the routines that keep the whole thing running. That's next.

Key takeaways

• An investing plan is six sections written down in advance: objectives, watch list criteria, entry rules, money management rules, exit rules, and routines. This lesson builds the first two.
• The point of a watch list is to set your standards before you have a favorite stock. Once you're attached to a company, you stop judging it — the rules you wrote while neutral are the ones you can trust.
• Filter in three passes, cheap work first: screen on ratios, glance at the chart, then estimate intrinsic value only for the few names that survive.
• Every threshold in a sample plan — P/E, P/B, P/S, ROE, debt, volume, margin of safety — is one investor's judgment call, not a law. What matters is knowing why each criterion exists so you can set your own number and defend it. A screen that copies someone else's settings is not your plan.
• Margin of safety exists because your estimate of a company's value is an estimate. It buys room to be wrong. It does not make anything safe.