Market Cap
$1.2T
MU
MUB
ISHARES TR
$101.50 ▲ +0.16%
Prev close $101.34Market cap$1.2T
26 New Institutional Positions11 Institutional Exits
Snapshot
The big-picture read on MUB right now — valuation, ownership and activity at a glance.
Cap Size
Mega Cap
Inst. Holders
50 funds
Inst. Value
$28.1B
Inst. Activity
26 buys / 11 sells
Price chart 30d -2.6%
Daily candles (open–high–low–close) with volume. Green = up day, red = down day.
No data for this timeframe.
Vol
Recent activity
The latest filings, insider trades, analyst actions, press and options flow — newest first.
Sep 14, 2026 ftd
FTD: MUB — 1,543,494 shares ($159.2M) failed to deliver
Settlement: 20260914, Price: $103.17, FTD Value: $159,242,275.98, ISHARES NATIONAL MUNI BOND ETF
Jun 30, 2026 Inst.
BlackRock, Inc. — ADD
1,115,072 shares ($120.0M)
Jun 30, 2026 Inst.
RENAISSANCE TECHNOLOGIES LLC — DOUBLED
1,004,526 shares ($108.1M)
Upcoming & catalyst events
Scheduled dates plus disclosed catalysts — earnings, dividends, enforcement, FDA and clinical-trial events. Colored dot = impact.
Sep 14, 2026
ftd
FTD: MUB — 1,543,494 shares ($159.2M) failed to deliver
Settlement: 20260914, Price: $103.17, FTD Value: $159,242,275.98, ISHARES NATIONAL MUNI BOND ETF
Sep 11, 2026
ftd
FTD: MUB — 208,221 shares ($21.4M) failed to deliver
Settlement: 20260911, Price: $102.72, FTD Value: $21,388,461.12, ISHARES NATIONAL MUNI BOND ETF
Sep 8, 2026
ftd
FTD: MUB — 24,689 shares ($2.6M) failed to deliver
Settlement: 20260908, Price: $104.03, FTD Value: $2,568,396.67, ISHARES NATIONAL MUNI BOND ETF
Sep 7, 2026
dark_pool
Dark Pool: MUB — 9.8M shares, 35,494 trades
Week starting 2026-09-07. Total ATS volume: 9,835,004 shares across 35,494 trades.
Sep 1, 2026
ftd
FTD: MUB — 466,203 shares ($49.0M) failed to deliver
Settlement: 20260901, Price: $105.10, FTD Value: $48,997,935.3, ISHARES NATIONAL MUNI BOND ETF
Institutional ownership
Which big funds own MUB (from quarterly 13F filings) and who is adding or trimming.
50 institutional holders with $28.1B total value (260,760,197 shares) as of 2026-Q2. Top holders: BANK, FMR, ENVESTNET. Net buying activity: 26 institutions added/increased vs 11 reduced.
Top holders — 2026-Q2
| Fund | Shares | Value | % Tracked | Last move |
|---|---|---|---|---|
| BANK OF AMERICA CORP /DE/ | 44,699,544 | $4.8B | 17.1% | — |
| FMR LLC | 22,787,508 | $2.5B | 8.7% | — |
| ENVESTNET ASSET MANAGEMENT INC | 17,585,152 | $1.9B | 6.7% | — |
| Creative Planning | 14,801,826 | $1.6B | 5.7% | — |
| LPL Financial LLC | 12,757,070 | $1.4B | 4.9% | — |
| Fisher Asset Management, LLC | 12,648,532 | $1.4B | 4.9% | — |
| WELLS FARGO & COMPANY/MN | 10,375,308 | $1.1B | 4.0% | — |
| MERCER GLOBAL ADVISORS INC /ADV | 10,361,448 | $1.1B | 4.0% | — |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 9,354,522 | $1.0B | 3.6% | — |
| UBS Group AG | 8,227,175 | $885.4M | 3.2% | DOUBLED +211.7% |
Recent position changes
| Fund | Action | Prev | Current | Change | Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | ADD | 650,618 | 1,115,072 | +71.4% | $120.0M |
| RENAISSANCE TECHNOLOGIES LLC | DOUBLED | 94,700 | 1,004,526 | +960.7% | $108.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | TRIM | 1,169,211 | 786,787 | -32.7% | $84.7M |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | ADD | 492,231 | 652,810 | +32.6% | $69.9M |
| Integrated Wealth Concepts LLC | ADD | 351,964 | 540,228 | +53.5% | $58.1M |
| JANE STREET GROUP, LLC | TRIM | 912,202 | 459,748 | -49.6% | $49.5M |
| COMMERCE BANK | ADD | 307,511 | 437,228 | +42.2% | $47.1M |
| Corient Private Wealth LP | TRIM | 864,554 | 422,533 | -51.1% | $45.5M |
| NEW YORK LIFE INVESTMENT MANAGEMENT LLC | ADD | 233,401 | 417,162 | +78.7% | $44.9M |
| Arax Advisory Partners | DOUBLED | 195,656 | 393,109 | +100.9% | $42.3M |
Short interest & halts
FINRA semi-monthly short positions, Reg SHO threshold status, and recent trading halts for MUB.
Shares short
11,953,104
Settlement Sep 15, 2026
Change vs prior
+48.1%
Semi-monthly cycle
Days to cover
1.0
At avg daily volume