The investor library

Peter Lynch

1944- · Fidelity Magellan · Thirteen years, and then he stopped.

Overview

Ran Fidelity's Magellan fund for thirteen years to 1990, averaging about 29% a year — roughly double the market, over a period long enough that it cannot be luck. He then retired at forty-six, and has spent the thirty-five years since being the most quoted and most misunderstood investor in the retail world.

“Know what you own, and know why you own it.”

Peter Lynch

Background

His father died when he was ten and the family went from comfortable to careful. He caddied at Brae Burn Country Club outside Boston, where the members were executives who talked about stocks while he carried their bags — which is how he became interested and, more practically, how he got a Fidelity internship in 1966. Boston College, then Wharton, then two years in the army, then Fidelity as an analyst in 1969.

He was handed Magellan in 1977. It was an obscure fund of about $18m that had been closed to new investors for years. By the time he left it was around $14bn and the largest in the world.

Style, and how it evolved

Buy what you can see, then do the work. The famous half is that a consumer notices a good business — a busy restaurant, a product their family keeps buying — long before an analyst covers it. The half that gets dropped is everything Lynch said came next: the balance sheet, the earnings history, the inventory line, the reason the stock is cheap.

Six categories, not one method. Slow growers, stalwarts, fast growers, cyclicals, turnarounds and asset plays each have their own arithmetic and their own reason to be owned. Most of the misuse of Lynch comes from applying one category's logic to another's business.

Earnings as the spine. Over a long enough period the earnings line and the share price go to the same place, which is what makes a genuinely growing business worth waiting for rather than chasing.

The evolution is really about scale, and it is not flattering to the legend. As Magellan grew he could no longer take meaningful positions in small companies, so he took more of them: at the peak he held well over a thousand names, and at times around 1,400. The most famous stock-picker of the era ended up running something closer to an actively selected index than a portfolio of convictions.

Performance

paid offa decisiona losswalked awaythe lifeshaded columns are the crashes — hover any mark

Magellan, 1977-1990: about 29% a year, against roughly 15% for the S&P 500 over the same stretch. He beat the index in eleven of thirteen years. Assets grew from about $18m to about $14bn ✓ — which is itself part of the story, since the later billions earned far less than the early millions.

✓ documented · ○ rests on secondary accounts rather than a filing

Case studies

Dunkin' Donuts. He bought it because the coffee was good and the shops were always full, and because no analyst was covering a doughnut chain. It became one of his ten-baggers. The mechanism: consumer visibility runs years ahead of institutional coverage, and in the 1980s that gap was wide enough to drive a fund through. ○

La Quinta Motor Inns. He found it because an executive at a competing hotel chain volunteered that La Quinta was doing something smarter than they were. He then did the work. It returned roughly eleven times. The mechanism: the best scuttlebutt comes from people with no incentive to give it to you. ○

Chrysler, 1982. The least Lynch-like trade and the most instructive. A leveraged near-bankrupt car maker, bought when the market assumed it was finished, on balance-sheet work showing it had the cash to survive if the economy turned. It became Magellan's largest holding at around 5% of the fund and multiplied several times over. The man remembered for "buy what you know" made his biggest single call on a distressed industrial he could not possibly have understood as a customer. ✓

The other side of the record

A record this good is where scepticism is most worth spending, so:

"Buy what you know" is the most misused sentence in retail investing. Recognising a product tells you nothing about the price being asked, the debt behind it or the competition arriving. Lynch said this repeatedly and it made no difference; the phrase travelled and the homework did not. A method that is systematically misapplied by its own audience has a problem, whoever is at fault.

The era did a great deal of the work. A small fund, a market with poor information flow, thousands of under-covered domestic companies, and a historic bull run from 1982. The same breadth today competes against instant, universal information.

Fourteen hundred holdings is not conviction. Whatever the record owes to selection, it also owes a great deal to breadth, turnover and access to Fidelity's research and dealing desk.

Thirteen years is shorter than the reputation implies, and he stopped at what turned out to be a very good moment. There is no way to know how the method would have handled the decade that followed, because he never had to.

And the investor-return gap above. It is the strongest count against him and it is not really about him at all.

Key lessons

• Know what you own, and know why you own it. Be able to say what the company does in a sentence. Not knowing is the failure that precedes all the others.
• Follow the earnings. Price and earnings converge given enough time; the waiting is where the return is.
• The visible half is the invitation, not the analysis. Noticing a busy shop is the cheap part. What separates a ten-bagger from a value trap is the work nobody quotes.
• A few winners pay for many mistakes. He was wrong constantly and it did not matter, because a stock can only fall to zero and can rise many times over.
• The best return is worthless if you cannot sit through it. Magellan's own investors are the evidence.

Reading and links

• One Up on Wall Street — 1989. The one to read, and the one most often quoted by people who have not.
• Beating the Street — 1993. More worked examples, including how he actually screened.
• Learn to Earn — with John Rothchild. Written for beginners and unembarrassed about it.

Marked ✓ where the figure is documented and ○ where it rests on secondary accounts rather than a filing. The investor-return gap is widely reported and attributed to Fidelity's own research; it is repeated often enough that the precise figures have drifted, so it is marked as an account rather than a measurement. This is a profile of an investor, not a view on any security.

Primary sources

Go to the thing itself. These are the subject’s own publications or an institution’s own site. No bookseller links, and no referral arrangements — a reading list that earns per click is not a reading list.

• Fidelity MagellanThe fund itself, long after him.

Profiles of investors, not views on any security, and not personal advice. Figures are marked ✓ where they are documented and ○ where they rest on secondary or private accounts — investing biography is heavily mythologised and the well-known numbers drift with each retelling. Capital is at risk.

Corrections and right of reply. Where a criticism is made of a named person it is stated as a specific measure over a stated period, attributed to its source, and separated from opinion. Assessments are opinion, honestly held, on facts believed accurate at the date shown. If anyone profiled here — or anyone acting for them — believes a fact is wrong, it will be corrected promptly and visibly, and a reply will be published alongside it on request.

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