November 2026

Conviction 10

Ten gold medallists from the corners of the market where things are moving fastest right now. Never more than three from one industry, and every month the slowcoaches make way.

Who came in, who left

The ten, and their stories

CompanySectorHeld sinceThe story
Lumentum
A maker of laser chips for AI data centres that has also built a switch able to reroute light without first turning it into electricity. No medal now: it has agreed to be bought by Marvell Technology, so it leaves with the next edition.
Electronic Components and ManufacturingAugust 2026Read · PDF
Gold medalJabil
Customers bring the idea and keep the brand; it brings factories, parts and testing, from medical devices to the racks inside AI data centres.
Electronic Components and ManufacturingSeptember 2026Read · PDF
Gold medalPiraeus Bank
Where many Greek families and businesses keep their savings and take their loans, and a bank now setting out to sell them insurance over the same counter.
BankingMay 2026Read · PDF
Gold medalEurobank
Mostly a lender to Greek households and companies, it also advises businesses, helps them raise money and owns property on the side.
BankingSeptember 2026Read · PDF
Silver medalNational Bank of Greece
Besides mortgages and business loans, this Greek bank looks after savers who are moving their money out of deposit accounts and into mutual funds.
BankingAugust 2026Read · PDF
Gold medalSamsung Fire & Marine Insurance
When a Korean is hurt, falls ill, crashes a car or sees a shop damaged, the claim often lands with the country's biggest insurer outside life cover.
InsuranceAugust 2026Read · PDF
Silver medalShennan Circuit
AI data centres need boards with far more layers and tighter tolerances than ordinary ones, and few suppliers can make them; this company is one.
Electronic Components and ManufacturingOctober 2025Read · PDF
Gold medalIMAX New
Moviegoers who pay extra for its giant premium screens are watching a system installed in someone else's cinema, and it keeps a cut of each ticket.
HardwareOctober 2026Read · PDF
Gold medalEverpure New
Makes the storage systems companies keep their data on, and is now pitching the biggest cloud operators to swap their spinning hard disks for its flash.
HardwareOctober 2026Read · PDF
Gold medalSandisk New
Its very large, power-saving flash drives store data for AI training, and in some data centres they are taking the place of hard disks.
HardwareOctober 2026Read · PDF

What 100 euros became

€383 Conviction 10€220 the marketOct 2020 · €100Oct 2026

Simulated: the published rules applied every month from Oct 2020 to Oct 2026, with a 0.1% cost on every trade; the market is every stock we rate, each counted equally. Simulated past performance is not a reliable indicator of future results.

Past editions

This year's, newest first. Each report opens with who came in and who left, the ten, and the results to that month.

EditionWhat changedThe month before · simulated
October 2026Three gold medallists arrive as the portfolio beats a falling market
3 in, 3 out
+5.4%
September · the market -1.6%
Report (PDF)
September 2026Three gold medallists arrive as banks and insurers join the line-up
3 in, 3 out
+2.9%
August · the market +1.2%
Report (PDF)
Before our first edition · back issues, reconstructed
August 2026 Back issueHalf the portfolio changes as five gold medallists arrive
5 in, 5 out
-9.1%
July · the market +1.1%
Report (PDF)
July 2026 Back issueKioxia and TD Synnex arrive as Zijin Mining and Popular depart
2 in, 2 out
+5.1%
June · the market +2.5%
Report (PDF)
June 2026 Back issueThree new gold medallists arrive as three others lose theirs
3 in, 3 out
+26.0%
May · the market +4.4%
Report (PDF)
May 2026 Back issueEurobank comes in with gold as Talen Energy loses its medal
1 in, 1 out
+13.3%
April · the market +5.9%
Report (PDF)
April 2026 Back issueHalf the line-up changes as mining's six-month run leads the field
5 in, 5 out
-11.1%
March · the market -4.7%
Report (PDF)
March 2026 Back issueThree gold medallists arrive from fast-moving industries as three names leave
3 in, 3 out
+7.4%
February · the market +3.0%
Report (PDF)
February 2026 Back issueFive in, five out as mining's 46% run sets the pace
5 in, 5 out
+14.5%
January · the market +3.7%
Report (PDF)
January 2026 Back issueThree gold-medal newcomers arrive as three names leave Conviction 10
3 in, 3 out
+6.1%
December · the market +0.8%
Report (PDF)

Back issues were reconstructed in October 2026. Each shows what the portfolio's rules, as published today, would have held at the end of that month, worked out from the medals as they stood on that date. They were not published at the time: we have published the portfolio month by month since the September 2026 edition.

Earlier editions: 2025

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