Free · no sign-up · Q2 2026

Which funds own MUB

iShares National MUN ETF in the Q2 2026 filings. At least 3 of the 91 current managers on file reported a position, worth $2.6bn between them. It is among the largest positions of fewer than a fifth of the current managers on file. Buying and selling roughly cancelled this quarter, which is what a name looks like when the argument is still live.

Managers holding: 3; at least, of 91 current
Combined value: $2.6bn; as reported
Opened: 0; new this quarter
Added to: 2; already held
Trimmed or sold out: 0; 0 sold out entirely

Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.

Managers reporting a position

Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.

Manager	Value	Weight	Shares	Change on the quarter	Action
Fidelity (FMR LLC) Long-only · $2304bn book	$2.5bn	0.1%	22,787,508	+$123m+843,798	Added
Renaissance Technologies LLC Quantitative · $72.6bn book	$108m	0.1%	1,004,526	+$98m+909,826	Added
Soros Fund Management LLC Macro · $8.1bn book	$26m	0.3%	241,400	+$400k0	Held

Ownership through time

At least 3 of the 95 managers whose filings are on file listed MUB in Q2 2026, against 1 in Q4 2014. 1 manager more than in Q1 2026: 1 listed it again.

Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.

Managers on file listing it

Their combined reported value

Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.

Started in Q2 2026

No manager on file started a position.

Largest increases, by shares

Fidelity (FMR LLC)21,943,710 to 22,787,508 shares+$91m

Largest decreases, by shares

No manager on file sold part of it.

Left it

No manager on file is shown leaving it.

Manager	First listed	Largest	Q2 2026
Fidelity (FMR LLC)	Q1 2022	$3.1bn	$2.5bn
Renaissance Technologies LLC	Q4 2023	$108m	$108m
Soros Fund Management LLC	Q1 2020	$28m	$26m
Jane Street Group LLC	Q4 2014	$558m	last listed Q4 2024
Wellington Management Group LLP	Q3 2025	$387m	last listed Q3 2025
D. E. Shaw & Co.	Q4 2023	$337m	last listed Q1 2025
Citadel Advisors LLC	Q4 2023	$184m	last listed Q4 2023
Verition Fund Management LLC	Q2 2025	$18m	last listed Q2 2025
Squarepoint Ops LLC	Q2 2016	$14m	last listed Q2 2019
Schonfeld Strategic Advisors LLC	Q3 2024	$9.7m	last listed Q3 2024

What is inside it

Knowing who bought a fund is half the question. The other half is what the fund holds, which is the manager’s actual exposure rather than the wrapper they reached for.

What MUB holds

How much of the picture this is

A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.

What to do with a name the funds are buying

Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.

Comps ExplorerValue it against the peers it trades beside Every managerRead any of these books in full Deal tapeWhat buyers paid for whole companies, not slices Hedge fund interviewsHow the room runs, and the stock pitch it wants

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 indexed 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

The holdings, every quarter, and the week between

One email a week on what moved in the market and what it means for the people interviewing into it, with the 13F changes the quarter they are filed.

One email a week, free, and you can leave at any point.