MIO — PIONEER MUNI HIGH INC OPP
MIO (PIONEER MUNI HIGH INC OPP) is tracked on HoldingsHub across five years of quarterly 13F filings. 10 funds have reported positions historically, with the sum of their latest reported stakes valued at $14.68M. No fund in our coverage reported a position in the latest filing period, which typically means the stock has fallen out of the tracked funds' portfolios rather than that it cannot be bought.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2025 — 5 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 586.93K | $6.93M | 0.00% | Reduce |
| Wells Fargo & Co history | 351.19K | $4.14M | 0.00% | Add |
| UBS Group AG history | 105.19K | $1.24M | 0.00% | Add |
| Invesco Ltd history | 57.96K | $683.92K | 0.00% | Reduce |
| BNY Mellon history | 18.55K | $218.89K | 0.00% | Reduce |
Q1 2025 — 5 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 694.48K | $8.19M | 0.00% | Reduce |
| Wells Fargo & Co history | 346.43K | $4.08M | 0.00% | Reduce |
| Invesco Ltd history | 59.73K | $704.21K | 0.00% | Add |
| UBS Group AG history | 39.70K | $468.07K | 0.00% | Add |
| BNY Mellon history | 35.43K | $417.73K | 0.00% | Hold |
Q4 2024 — 5 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 791.06K | $9.38M | 0.00% | Reduce |
| Wells Fargo & Co history | 390.75K | $4.63M | 0.00% | Reduce |
| Invesco Ltd history | 58.83K | $697.72K | 0.00% | Reduce |
| UBS Group AG history | 37.81K | $448.46K | 0.00% | Add |
| BNY Mellon history | 35.43K | $420.21K | 0.00% | Hold |
Q3 2024 — 5 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 843.58K | $10.46M | 0.00% | Reduce |
| Wells Fargo & Co history | 395.51K | $4.90M | 0.00% | Reduce |
| Invesco Ltd history | 59.33K | $735.72K | 0.00% | Add |
| BNY Mellon history | 35.43K | $439.36K | 0.00% | Add |
| UBS Group AG history | 31.53K | $391.00K | 0.00% | Add |
Q2 2024 — 5 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 893.38K | $10.41M | 0.00% | Reduce |
| Wells Fargo & Co history | 420.53K | $4.90M | 0.00% | Reduce |
| UBS Group AG history | 30.71K | $357.73K | 0.00% | Add |
| Invesco Ltd history | 19.85K | $231.26K | 0.00% | New |
| BNY Mellon history | 15.32K | $178.45K | 0.00% | Reduce |
Q1 2024 — 4 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Morgan Stanley history | 942.03K | $10.65M | 0.00% | Reduce |
| Wells Fargo & Co history | 438.65K | $4.96M | 0.00% | Reduce |
| BNY Mellon history | 47.64K | $538.79K | 0.00% | New |
| UBS Group AG history | 26.71K | $302.08K | 0.00% | Reduce |
New Positions (latest)
No fund opened a new position this quarter.
Fully Exited (vs previous quarter)
No tracked fund fully exited this quarter.
Fund Position History — shares by quarter (top 10 funds)
| Fund | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 | Q1 2024 | Q4 2023 | Q3 2023 | Q2 2023 | Q1 2023 | Q4 2022 | Q3 2022 | Q2 2022 | Q1 2022 | Q4 2021 | Q3 2021 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Morgan Stanley | 586.93K | 694.48K | 791.06K | 843.58K | 893.38K | 942.03K | 967.63K | 1.53M | 1.48M | 1.48M | 1.33M | 1.06M | 1.02M | 460.68K | 672.91K | 344.96K |
| Wells Fargo & Co | 351.19K | 346.43K | 390.75K | 395.51K | 420.53K | 438.65K | 453.43K | 427.22K | 373.48K | 299.70K | 284.21K | 193.19K | 92.74K | 204.58K | 189.15K | 257.00K |
| UBS Group AG | 105.19K | 39.70K | 37.81K | 31.53K | 30.71K | 26.71K | 53.72K | 57.18K | 58.09K | 68.17K | 85.17K | 105.22K | 45.00K | 23.73K | 52.40K | 51.79K |
| Invesco Ltd | 57.96K | 59.73K | 58.83K | 59.33K | 19.85K | — | — | — | — | — | — | — | — | — | — | — |
| BNY Mellon | 18.55K | 35.43K | 35.43K | 35.43K | 15.32K | 47.64K | — | — | 23.66K | — | — | — | — | — | — | — |
| JPMorgan Chase & Co | — | — | — | — | — | — | — | 154 | — | 47 | 4.86K | — | — | — | — | — |
| Amundi US | — | — | — | — | — | — | 5.23K | 5.00K | 5.00K | 5.00K | 5.00K | 5.00K | 5.00K | 5.00K | 5.00K | — |
| Bank of America Corp | — | — | — | — | — | — | — | — | — | — | 20.00K | 12.10K | 12.10K | 12.00K | — | — |
| Millennium Management | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 31.50K |
| PNC Financial Services | — | — | — | — | — | — | — | — | — | — | — | 55.00K | 55.00K | — | — | — |