Blackrock MuniAssets Fund, Inc (MUA)
MUA moved a median of 0.00% 30 minutes after news, and +0.00% by the close. How MUA actually reacts to news — the realized, point-in-time move the market made, measured across 80 labeled events over the last three years with zero look-ahead.
MUA’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 30% | 66 |
| 30-min | 0.00% | 43% | 79 |
| 60-min | 0.00% | 44% | 80 |
| to close | +0.00% | 50% | 76 |
| Middle 50% of MUA reactions | -0.14% to +0.20% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 80 |
Half of all Blackrock MuniAssets Fund, Inc news events land between -0.14% and +0.20% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when MUA moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MUA's baseline. Nothing else.
Recent MUA events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form N-CEN BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form N-CEN | SEC EDGAR | +0.00% | -0.21% | |
| Form N-CSR BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form N-CSR | SEC EDGAR | — | +0.75% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form NPORT-P | SEC EDGAR | -0.07% | +0.78% | |
| Form N-23C-2 BLACKROCK MUNIASSETS For: Sep 10 | SEC filing · Form N-23C-2 | SEC EDGAR | +0.00% | +0.61% | |
| Form N-PX BLACKROCK MUNIASSETS For: Jun 30 | SEC filing · Form N-PX | SEC EDGAR | -0.10% | +0.00% | |
| Form 497AD BLACKROCK MUNIASSETS | SEC filing · Form 497AD | SEC EDGAR | +0.00% | -0.20% | |
| BlackRock MuniAssets Fund, Inc. (MUA) Announces Results of its Over-Subscribed Rights Offering | Press release | Business Wire | +0.00% | +0.00% | |
| Form POS EX BLACKROCK MUNIASSETS | SEC filing · Form POS | SEC EDGAR | +0.10% | -0.59% | |
| Form EFFECT BLACKROCK MUNIASSETS | SEC filing · Form EFFECT | SEC EDGAR | -0.47% | +0.84% | |
| BlackRock MuniAssets Fund, Inc. (MUA) Announces Terms of Rights Offering to Pursue Attractive High Yield Municipal Opportunities | Press release | Business Wire | -0.47% | +0.84% | |
| Form 497AD BLACKROCK MUNIASSETS | SEC filing · Form 497AD | SEC EDGAR | -0.47% | +0.84% | |
| Form N-2/A BLACKROCK MUNIASSETS | SEC filing · Form N-2 | SEC EDGAR | +0.00% | -0.27% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Apr 30 | SEC filing · Form NPORT-P | SEC EDGAR | +0.00% | +0.00% | |
| Form N-2 BLACKROCK MUNIASSETS | SEC filing · Form N-2 | SEC EDGAR | +0.00% | +0.47% | |
| Form N-CSRS BLACKROCK MUNIASSETS For: Jan 31 | SEC filing · Form N-CSRS | SEC EDGAR | — | +0.52% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Jan 31 | SEC filing · Form NPORT-P | SEC EDGAR | +0.00% | +0.05% | |
| Form N-23C-2 BLACKROCK MUNIASSETS For: Feb 27 | SEC filing · Form N-23C-2 | SEC EDGAR | -0.14% | -0.54% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Oct 31 | SEC filing · Form NPORT-P | SEC EDGAR | — | +0.57% | |
| BlackRock Announces Shareholder Approval of Certain Municipal CEF Reorganizations | Press release | Business Wire | -0.14% | +0.10% | |
| Form DEFA14A BLACKROCK MUNIASSETS | SEC filing · Form DEFA14A | SEC EDGAR | — | +0.09% | |
| Form N-CEN BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form N-CEN | SEC EDGAR | +0.02% | +0.37% | |
| Form DEFA14A BLACKROCK MUNIASSETS | SEC filing · Form DEFA14A | SEC EDGAR | +0.00% | +0.73% | |
| Form N-CSR BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form N-CSR | SEC EDGAR | +0.00% | -0.91% | |
| Form DEFA14A BLACKROCK MUNIASSETS | SEC filing · Form DEFA14A | SEC EDGAR | -0.27% | +0.36% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form NPORT-P | SEC EDGAR | -0.27% | +0.36% | |
| Form N-23C-2 BLACKROCK MUNIASSETS For: Sep 11 | SEC filing · Form N-23C-2 | SEC EDGAR | — | +0.87% | |
| Form EFFECT BLACKROCK MUNIASSETS | SEC filing · Form EFFECT | SEC EDGAR | +0.00% | +1.03% | |
| Form N-14 8C/A BLACKROCK MUNIASSETS | SEC filing · Form N-14 | SEC EDGAR | -0.89% | -0.47% | |
| Form N-PX BLACKROCK MUNIASSETS For: Jun 30 | SEC filing · Form N-PX | SEC EDGAR | +0.33% | +0.10% | |
| Form N-14 8C BLACKROCK MUNIASSETS | SEC filing · Form N-14 | SEC EDGAR | +0.00% | -0.77% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Apr 30 | SEC filing · Form NPORT-P | SEC EDGAR | — | +0.10% | |
| Form N-CSRS BLACKROCK MUNIASSETS For: Jan 31 | SEC filing · Form N-CSRS | SEC EDGAR | -0.29% | -1.15% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Jan 31 | SEC filing · Form NPORT-P | SEC EDGAR | +0.09% | -0.28% | |
| Form N-23C-2 BLACKROCK MUNIASSETS For: Oct 01 | SEC filing · Form N-23C-2 | SEC EDGAR | -0.11% | +0.23% | |
| Form N-CEN/A BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form N-CEN | SEC EDGAR | +0.00% | -0.36% | |
| Form 8-K BLACKROCK MUNIASSETS For: Jan 20 | SEC filing · Form 8-K | SEC EDGAR | +0.10% | +0.36% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Oct 31 | SEC filing · Form NPORT-P | SEC EDGAR | +0.21% | +0.95% | |
| Form N-CEN BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form N-CEN | SEC EDGAR | -0.08% | -0.57% | |
| Form N-CSR BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form N-CSR | SEC EDGAR | +0.08% | +0.81% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Jul 31 | SEC filing · Form NPORT-P | SEC EDGAR | +0.40% | -0.24% | |
| Form N-23C-2 BLACKROCK MUNIASSETS For: Sep 12 | SEC filing · Form N-23C-2 | SEC EDGAR | +0.00% | +0.40% | |
| Form N-PX BLACKROCK MUNIASSETS For: Jun 30 | SEC filing · Form N-PX | SEC EDGAR | — | +0.01% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Apr 30 | SEC filing · Form NPORT-P | SEC EDGAR | — | -0.52% | |
| Form N-CSRS BLACKROCK MUNIASSETS For: Jan 31 | SEC filing · Form N-CSRS | SEC EDGAR | — | +0.09% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Jan 31 | SEC filing · Form NPORT-P | SEC EDGAR | -0.14% | +0.09% | |
| Form N-23C-2 BLACKROCK MUNIASSETS For: Mar 01 | SEC filing · Form N-23C-2 | SEC EDGAR | +0.73% | +0.27% | |
| Form NPORT-P BLACKROCK MUNIASSETS For: Oct 31 | SEC filing · Form NPORT-P | SEC EDGAR | -0.17% | -0.17% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MUA section they belong to.
Where else MUA is measured.
MUA earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Blackrock MuniAssets Fund, Inc's median reaction calculated?
Every labeled MUA news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 80 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 43% of MUA's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does MUA's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.