MUB in the 13F filings

iShares TR · CUSIP 464288414

Quarter

Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024 Q4 2023 Q3 2023

Quarter end: 30 Jun 2026; the date the book describes
Filed: 27 Oct 2026; latest of these filings; the earliest 13 Aug 2026
Managers listing it: 11; at least, of 95 tracked, among listed positions
Comparable managers: 91; filed both Q1 2026 and Q2 2026; 2 listed it in both
Shares listed: 25,320,386; combined, among listed positions
Reported value: $2.7bn; combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 6 buyers (opened or added shares) and 5 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +1,264,177.

Managers listing MUB in Q2 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2026, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

ActionShare of book at least

11 of 11 holders

				Action		Filing
Fidelity (FMR LLC)	22,787,508	$2.5bn	0.11%	Added	+843,798	13 Aug 2026 (the filing on sec.gov)
Renaissance Technologies LLC	1,004,526	$108m	0.15%	Added	+909,826	13 Aug 2026 (the filing on sec.gov)
AllianceBernstein LP	470,875	$50m	under 0.1%	Added	+8,860	14 Aug 2026 (the filing on sec.gov)
Jane Street Group LLC	459,748	$49m	under 0.1%	Trimmed	-452,454	14 Aug 2026 (the filing on sec.gov)
Soros Fund Management LLC	241,400	$26m	0.32%	Held	0	14 Aug 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc	132,700	$14m	under 0.1%	Added	+82,000	14 Aug 2026 (the filing on sec.gov)
Citadel Advisors LLC	97,228	$10m	under 0.1%	Trimmed	-220,472	2 Sep 2026 (the filing on sec.gov)
Susquehanna International Group LLP	89,220	$9.6m	under 0.1%	Added	+82,668	14 Aug 2026 (the filing on sec.gov)
Millennium Management LLC	22,315	$2.4m	under 0.1%	New	new	14 Aug 2026 (the filing on sec.gov)
Neuberger Berman Group LLC	12,432	$1.3m	under 0.1%	Trimmed	-363	27 Oct 2026 (the filing on sec.gov)
AQR Capital Management LLC	2,434	$262k	under 0.1%	Trimmed	-1,387	14 Aug 2026 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2026 to Q2 2026, among managers that listed it in both quarters or opened it.

Increases

Renaissance Technologies LLCexisting position · 1,004,526 shares now+909,826
Fidelity (FMR LLC)existing position · 22,787,508 shares now+843,798
Susquehanna International Group LLPexisting position · 89,220 shares now+82,668
T. Rowe Price Associates Incexisting position · 132,700 shares now+82,000
Millennium Management LLCnew position · 22,315 shares now+22,315

Reductions

Jane Street Group LLCexisting position · 459,748 shares now-452,454
Citadel Advisors LLCexisting position · 97,228 shares now-220,472
AQR Capital Management LLCexisting position · 2,434 shares now-1,387
Neuberger Berman Group LLCexisting position · 12,432 shares now-363

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (1)

Millennium Management LLC$2.4m

Exited (1)

Tudor Investment Corpwas $1.1m

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.

4 in Q3 2024 to 3 in Q2 2026

Tracked managers listing it, at least.

the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.

MUB by quarter
Quarter	Holders	Reported value	Buyers	Sellers
Q4 2014	1	$12m	n.a.	n.a.
Q1 2016	1	$6.9m	n.a.	n.a.
Q2 2016	2	$67m	n.a.	n.a.
Q4 2016	1	$12m	n.a.	n.a.
Q1 2017	2	$27m	n.a.	n.a.
Q2 2017	2	$30m	n.a.	n.a.
Q4 2017	1	$4.9m	n.a.	n.a.
Q2 2018	2	$44m	n.a.	n.a.
Q4 2018	1	$3.6m	n.a.	n.a.
Q1 2019	2	$86m	n.a.	n.a.
Q2 2019	1	$4.2m	n.a.	n.a.
Q3 2019	1	$31m	n.a.	n.a.
Q1 2020	1	$27m	n.a.	n.a.
Q2 2020	2	$258m	n.a.	n.a.
Q3 2020	2	$133m	n.a.	n.a.
Q4 2020	2	$195m	n.a.	n.a.
Q1 2021	2	$224m	n.a.	n.a.
Q2 2021	2	$434m	n.a.	n.a.
Q3 2021	1	$28m	n.a.	n.a.
Q4 2021	2	$249m	n.a.	n.a.
Q1 2022	3	$1.1bn	n.a.	n.a.
Q2 2022	3	$2.8bn	n.a.	n.a.
Q3 2022	2	$2.8bn	n.a.	n.a.
Q4 2022	2	$3.1bn	n.a.	n.a.
Q1 2023	2	$2.6bn	n.a.	n.a.
Q2 2023	2	$2.6bn	n.a.	n.a.
Q3 2023	2	$2.5bn	n.a.	n.a.
Q4 2023	6	$3.0bn	4	1
Q1 2024	4	$2.6bn	1	2
Q2 2024	3	$1.8bn	1	2
Q3 2024	4	$1.6bn	2	1
Q4 2024	4	$1.9bn	2	1
Q1 2025	3	$1.7bn	1	1
Q2 2025	4	$2.0bn	3	0
Q3 2025	3	$2.8bn	2	1
Q4 2025	2	$2.4bn	5	8
Q1 2026	2	$2.4bn	4	7
Q2 2026	3	$2.6bn	6	5

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

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How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own MUB, latest filings →Back to the 13F Explorer →

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