貝萊德市政控股基金公司
US ˙ NYSE ˙ US09253N1046

SecurityMHD / BlackRock MuniHoldings Fund, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership382,902 shares
Latest Disclosed Value $ 4,319,135
UBS Group AG reports 922.54% increase in ownership of MHD / BlackRock MuniHoldings Fund, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 382,902 shares of BlackRock MuniHoldings Fund, Inc. (US:MHD) valued at $4,319,135 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 37,446 shares of BlackRock MuniHoldings Fund, Inc.. This represents a change in shares of 922.54% during the quarter. The current value of the position is $4,479,953 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 382,902 345,456 922.54 4,319 883.83 0.0001
2026-01-29 2025-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 37,446 -2,078 -5.26 440 -5.39 0.0001
2025-11-13 2025-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 39,524 -2,993 -7.04 464 -2.52 0.0001
2025-08-14 2025-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 42,517 -39,114 -47.92 476 -50.31 0.0001
2025-05-13 2025-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 81,631 -12,317 -13.11 958 -12.59 0.0002
2025-02-14 2024-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 93,948 25,585 37.43 1,096 26.85 0.0002
2024-11-14 2024-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 68,363 -5,375 -7.29 865 -3.03 0.0002
2024-08-14 2024-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 73,738 7,506 11.33 891 11.38 0.0002
2024-05-13 2024-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 66,232 -11,711 -15.03 800 -13.79 0.0002
2024-02-09 2023-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 77,943 -14,789 -15.95 928 -2.93 0.0003
2023-11-09 2023-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 92,732 -65,357 -41.34 956 -47.99 0.0003
2023-08-11 2023-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 158,089 -45,647 -22.40 1,839 -25.13 0.0006
2023-05-12 2023-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 203,736 -51,471 -20.17 2,455 -20.76 0.0009
2023-02-08 2022-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 255,207 -255,458 -50.02 3,098 -46.07 0.0012
2022-11-10 2022-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 510,665 14,745 2.97 5,745 -8.71 0.0025
2022-08-10 2022-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 495,920 125,657 33.94 6,293 19.43 0.0026
2022-05-16 2022-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 370,263 -32,132 -7.99 5,269 -21.87 0.0018
2022-02-14 2021-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 402,395 -116,702 -22.48 6,744 -20.64 0.0019
2021-11-15 2021-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 519,097 41,921 8.79 8,498 6.13 0.0027
2021-08-13 2021-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 477,176 16,184 3.51 8,007 8.55 0.0026
2021-05-12 2021-03-31 13F BLACKROCK MUNIHOLDINGS QUALI COM 09253N104 460,992 417,979 971.75 7,376 958.25 0.0024
2021-02-11 2020-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 43,013 9,110 26.87 697 35.08 0.0002
2020-11-12 2020-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 33,903 -1,010 -2.89 516 -0.96 0.0002
2020-07-31 2020-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 34,913 -444 -1.26 521 -5.44 0.0002
2020-05-01 2020-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 35,357 -4,527 -11.35 551 -18.49 0.0003
2020-02-14 2019-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 39,884 -6,567 -14.14 676 -11.29 0.0002
2019-11-14 2019-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 46,451 -21,606 -31.75 762 -34.59 0.0003
2019-08-14 2019-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 68,057 3,658 5.68 1,165 13.44 0.0004
2019-05-14 2019-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 64,399 4,561 7.62 1,027 16.57 0.0004
2019-02-14 2018-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 59,838 -30,908 -34.06 881 -34.93 0.0004
2018-11-14 2018-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 90,746 -4,143 -4.37 1,354 -8.58 0.0005
2018-08-14 2018-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 94,889 7,328 8.37 1,481 10.85 0.0006
2018-05-15 2018-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 87,561 -1,515 -1.70 1,336 -9.24 0.0006
2018-02-14 2017-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 89,076 -934 -1.04 1,472 -5.46 0.0006
2017-11-14 2017-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 90,010 -14,226 -13.65 1,557 -14.59 0.0007
2017-11-14 2017-06-30 13F/A-1 BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 104,236 18,564 21.67 1,823 28.47 0.0009
2017-08-14 2017-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 104,236 18,564 1,823
2017-11-14 2017-03-31 13F/A-1 BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 85,672 3,405 4.14 1,419 6.61 0.0008
2017-05-12 2017-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 85,672 3,405 1,419
2017-02-14 2016-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 82,267 6,276 8.26 1,331 -4.86 0.0007
2016-11-14 2016-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 75,991 1,458 1.96 1,399 -0.92 0.0008
2016-08-12 2016-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 74,533 3,320 4.66 1,412 9.54 0.0009
2016-05-12 2016-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 71,213 -7,921 -10.01 1,289 -4.80 0.0009
2016-02-16 2015-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 79,134 20,910 35.91 1,354 39.01 0.0009
2015-11-13 2015-09-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 58,224 5,676 10.80 974 16.51 0.0007
2015-08-14 2015-06-30 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 52,548 1,102 2.14 836 -6.80 0.0006
2015-05-14 2015-03-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 51,446 6,180 13.65 897 15.74 0.0006
2015-02-17 2014-12-31 13F BLACKROCK MUNIHOLDINGS FD IN COM 09253N104 45,266 45,266 775 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.