Does it matter when many super investors own the same stock?

A little, but not on its own. A stock held by 34 of 81 tracked managers tells you it clears the bar most of them screen for, usually size and liquidity. It does not tell you how big any single manager's position is, when they bought, or whether they are adding or trimming. Position size and timing carry more information than the headcount does.

Why do so many managers end up owning the same mega cap stocks?

Partly because those stocks are large enough and liquid enough for a manager with billions of dollars to actually build a position in, which mechanically narrows the list before conviction ever enters the picture. A concentrated small cap idea from one manager is a stronger signal of that manager's specific view than a Microsoft position shared with 33 others.

Guide · 6 min read

When many super investors own the same stock

Thirty four of the eighty one super investors this site tracks hold Microsoft. That is the most crowded name in the group, and crowded is not the same word as convincing.

Updated 2026-09-03

Thirty four of the 81 super investors this site tracks own Microsoft. That is the single most held name in the group, ahead of Alphabet's Class A shares at 32 and Amazon at 30. Forty two percent of every manager Tenachine follows is sitting in the same stock.

The short answer to whether that number means anything is no, not by itself. Tenachine's own page for this ranking says so directly: concurrence is computed from the latest available 13F filing per manager, and a stock being widely held says nothing about position size or conviction. That line is not a disclaimer added to cover the page. It is the actual limit of what a headcount can tell you.

The case for taking it seriously

It is not nothing. Eighty one professional managers running very different strategies converging on the same handful of names is a real pattern, not noise. If a name clears the bar for a deep value investor, a growth-focused fund, and a concentrated activist all at once, it has survived several unrelated filters. A screener built on this kind of overlap is a reasonable place to start looking, which is exactly how Tenachine frames the page, a starting point for further research, not a verdict.

The case against

Microsoft, Alphabet, and Amazon are also some of the largest, most liquid stocks that exist. A manager overseeing several billion dollars has a short list of positions that can actually absorb that much capital without moving the price, and mega caps sit at the top of it. Owning Microsoft is available to almost every manager on the list before conviction ever enters the picture. A small cap idea held by one manager and nobody else on the list is a stronger signal of that manager's specific judgment than a mega cap held by a third of them, even though the mega cap has the bigger headcount.

Most tracked super investors holding the same ticker

Alphabet appears twice, as GOOGL and GOOG, its two separately traded share classes. Add them and Alphabet shows up in more tracked-investor matches than Microsoft, 58 against 34, though since some managers hold both classes at once that is not the same as 58 distinct investors. A ticker level count needs its own caveats before the count above it does.

What the count does not do

A count of holders answers one question: how many. It does not answer how much, which is the question that actually separates conviction from a rounding error. Tenachine's guide on 13F concentration shows how far apart two managers' position sizes can be even inside one disclosed book, Michael Burry's largest position at 38.7 percent of his book against Warren Buffett's largest at 28.4 percent of a far more spread out one. The same range applies here. Microsoft could be a 15 percent position for one of the 34 managers holding it and a 0.3 percent position for another, and the headcount of 34 would look identical either way.

It also does not answer when. A 13F is filed up to 45 days after a quarter closes, so a name that was crowded last quarter could already be getting quietly sold down by the time the filing reaches a reader, and the count would not move until the next quarter's filings catch up. Thirty four is a photograph, not a live feed, and the photograph is always a little old by the time anyone sees it.

The number is still worth having. It is one input, best combined with position size and the direction of change, before a crowded name gets treated as anything more than a name worth a closer look. Tenachine's screener sits next to the concurrence ranking for that reason: the count narrows a list of over 1,700 tracked tickers down to a few dozen worth examining one at a time, and examining them one at a time is where the actual answer lives.