Woodline Partners LP and Janus Henderson Group Ltd: where the books meet

At Q2 2026, at least 39% of the two 13F books was the same, across 207 stocks both listed, against 14% at Q4 2019. Overlap is the smaller of each shared stock’s two weights, added up: the part of one book that could be swapped for the other’s without a trade.

Overlap by quarter

Only quarters both managers filed. Where either filing has more positions than are read each quarter, a stock both hold below that range is not counted, so the figure is a floor.

What the overlap is made of, Q2 2026

Stocks both listed, by the smaller of the two weights. A weight is the stock’s share of that manager’s reported book, which says how large the position is, not how strongly it is held.

Stock	Woodline Partners LP	Janus Henderson Group Ltd
Nvidia Corp(NVDA)	3.3%Added	6.6%Trimmed
Apple Inc(AAPL)	2.9%Added	2.2%Trimmed
Microsoft Corp(MSFT)	1.9%Added	2.8%Trimmed
Amazon Com Inc(AMZN)	1.8%Trimmed	2.4%Trimmed
Broadcom Inc(AVGO)	1.4%Added	3.0%Added
Facebook Inc(META)	1.4%Added	1.2%Trimmed
Alphabet Inc(GOOG)	1.1%Added	4.3%Added
Micron Technology Inc(MU)	1.0%Trimmed	1.4%Trimmed
Lilly Eli & Co(LLY)	0.9%Added	1.9%Trimmed
Revolution Medicines Inc(RVMD)	1.2%Trimmed	0.8%Added
Johnson & Johnson(JNJ)	0.8%Trimmed	0.8%Trimmed
Abbvie Inc(ABBV)	0.7%Added	0.6%Trimmed
Lumentum HLDGS Inc(LITE)	0.6%Added	0.7%Added
Advanced Micro Devices Inc(AMD)	0.6%Trimmed	0.8%Added
JPMorgan Chase & Co.(JPM)	0.6%Added	0.5%Trimmed
Lam Research Corp(LRCX)	0.5%Added	1.7%Added
Applied Matls Inc(AMAT)	0.5%Trimmed	0.6%Added
Alphabet Inc(GOOGL)	1.2%Trimmed	0.4%Trimmed
Unitedhealth Group Inc(UNH)	0.4%Added	0.8%Added
Visa Inc(V)	0.4%Added	0.6%Trimmed

and 187 smaller ones

Moved different ways in Q2 2026

Stocks one manager started or added to while the other trimmed or sold out, between the same two quarter ends. A 13F shows the quarter ends, never when in between anything was bought or sold, or why.

Nvidia Corp(NVDA)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Microsoft Corp(MSFT)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Apple Inc(AAPL)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Lilly Eli & Co(LLY)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Facebook Inc(META)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Ge Vernova Inc(GEV)Woodline Partners LP trimmed; Janus Henderson Group Ltd added
Argenx Se(ARGX)Woodline Partners LP started; Janus Henderson Group Ltd trimmed
Flex LTD(FLEX)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Advanced Micro Devices Inc(AMD)Woodline Partners LP trimmed; Janus Henderson Group Ltd added
Howmet Aerospace Inc(HWM)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Mastercard Inc(MA)Woodline Partners LP added; Janus Henderson Group Ltd trimmed
Eaton Corp PLC(ETN)Woodline Partners LP added; Janus Henderson Group Ltd trimmed

Woodline Partners LP: the record Janus Henderson Group Ltd: the record

Company names, tickers and logos are the trademarks of their respective owners and appear here to identify the company whose public figures are being used. L3VLUP is not affiliated with, sponsored by or endorsed by any company shown, and nothing here is a statement by or about that company. More

Provided for information purposes only, not financial advice. The holdings shown here and anything drawn from them are illustrative, produced from assumptions you control, and must not be relied on for any investment, financial or business decision. Read the full notice

Not advice, and not a recommendation. Everything L3VLUP publishes is provided for information purposes only. Nothing here is financial, investment, legal, tax or accounting advice, a personal recommendation, or an offer or solicitation to buy or sell any security or financial instrument. It takes no account of anyone’s objectives, financial situation or needs.

Not a regulated adviser. L3VLUP does not provide regulated financial services. Speak to a suitably qualified and regulated professional before acting on anything you read here.

Illustrative figures. Default values are plausible starting points chosen so a model has somewhere to begin. They are not data, not a view on any company, and not calibrated to anything. Outputs move with whatever you type in.

Third-party data. Where live figures appear they come from third parties, including public filings and market feeds. They may be delayed, incomplete, restated, mis-tagged at source or simply wrong, and their providers do not endorse or verify this page. Every figure links to where it came from — check it there before relying on it. Past performance is not a guide to future performance.

Company names and logos. Names, tickers and logos are the trademarks of their owners and appear only to identify the company whose public figures are being used. L3VLUP is not affiliated with, sponsored by or endorsed by any company shown, none of them took part in preparing the exercise, and nothing here is a statement by or about any of them. See third-party names and marks.

No warranty, and limited liability. This page is provided “as is” without warranty of any kind. To the fullest extent permitted by law, L3VLUP accepts no liability for any loss or damage arising from use of, or reliance on, anything on it. Nothing in this notice limits any liability that cannot lawfully be limited.

Full terms: Information Purposes and No Advice · Terms