BlackRock Health Sciences Trust
US ˙ NYSE ˙ US09250W1071

SecurityBME / BlackRock Health Sciences Trust
InstitutionMorgan Stanley
Latest Disclosed Ownership357,918 shares
Latest Disclosed Value $ 13,783,470
Morgan Stanley reports 3.51% increase in ownership of BME / BlackRock Health Sciences Trust

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 357,918 shares of BlackRock Health Sciences Trust (US:BME) valued at $13,783,422 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 345,789 shares of BlackRock Health Sciences Trust. This represents a change in shares of 3.51% during the quarter. The current value of the position is $14,033,965 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 357,918 12,129 3.51 13,783 -3.09 0.0008
2026-05-27 2025-12-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 345,789 16,856 5.12 14,222 16.14 0.0008
2026-02-13 2025-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 345,789 16,856 14,222 0.0008
2026-05-27 2025-09-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 328,933 -30,887 -8.58 12,246 -6.65 0.0007
2025-11-14 2025-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 328,933 -30,887 12,246 0.0007
2025-08-15 2025-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 359,820 -9,111 -2.47 13,119 -7.97 0.0009
2025-05-15 2025-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 368,931 -16,839 -4.37 14,256 -2.58 0.0010
2025-05-15 2024-12-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 385,770 -10,045 -2.54 14,632 -11.83 0.0010
2025-02-14 2024-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 385,770 -10,045 14,632 0.0010
2025-05-14 2024-09-30 13F/A-2 BLACKROCK HEALTH SCIENCES TR COM 09250W107 395,815 27,968 7.60 16,597 10.45 0.0012
2025-02-14 2024-09-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 395,815 27,968 16,597 0.0012
2024-11-14 2024-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 395,815 27,968 16,597 0.0001
2025-05-14 2024-06-30 13F/A-2 BLACKROCK HEALTH SCIENCES TR COM 09250W107 367,847 -16,866 -4.38 15,027 -5.75 0.0012
2024-10-17 2024-06-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 367,847 -16,866 15,027 0.0012
2024-08-14 2024-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 367,847 -16,866 15,027 0.0012
2024-10-17 2024-03-31 13F/A-2 BLACKROCK HEALTH SCIENCES TR COM 09250W107 384,713 6,602 1.75 15,943 4.21 0.0013
2024-08-16 2024-03-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 384,713 6,602 15,943 0.0001
2024-05-15 2024-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 384,713 6,602 15,943 0.0013
2024-08-16 2023-12-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 378,111 37,811 11.11 15,298 14.83 0.0013
2024-02-13 2023-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 378,111 37,811 15,298 0.0013
2023-11-15 2023-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 340,300 4,519 1.35 13,323 -2.37 0.0014
2023-08-14 2023-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 335,781 41,765 14.21 13,646 10.88 0.0013
2023-05-15 2023-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 294,016 -16,521 -5.32 12,308 -9.06 0.0013
2023-02-14 2022-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 310,537 -14,253 -4.39 13,533 7.33 0.0015
2022-11-14 2022-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 324,790 26,307 8.81 12,609 -0.37 0.0017
2022-10-27 2022-06-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 298,483 20,903 7.53 12,656 0.17 0.0016
2022-08-15 2022-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 298,483 20,903 12,656 0.0003
2022-10-27 2022-03-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 277,580 14,237 5.41 12,635 -1.07 0.0017
2022-05-13 2022-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 277,580 14,237 12,635 0.0017
2022-02-14 2021-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 263,343 14,082 5.65 12,772 7.54 0.0016
2021-11-15 2021-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 249,261 -10,699 -4.12 11,877 -5.80 0.0016
2021-08-23 2021-06-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 259,960 -27,034 -9.42 12,608 -5.02 0.0017
2021-08-16 2021-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 259,960 -27,034 12,608 0.0003
2021-05-17 2021-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 286,994 57,013 24.79 13,274 21.28 0.0019
2021-02-16 2020-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 229,981 5,659 2.52 10,945 13.84 0.0017
2020-11-13 2020-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 224,322 -37,327 -14.27 9,614 -9.90 0.0019
2020-08-14 2020-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 261,649 27,900 11.94 10,670 26.62 0.0024
2020-05-26 2020-03-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 233,749 57,384 32.54 8,427 12.42 0.0023
2020-05-15 2020-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 233,749 57,384 8,427 647.3693
2020-02-14 2019-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 176,365 4,650 2.71 7,496 14.13 0.0017
2019-11-14 2019-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 171,715 -2,429 -1.39 6,568 -3.01 0.0017
2019-08-14 2019-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 174,144 14,526 9.10 6,772 6.63 0.0018
2019-05-15 2019-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 159,618 7,785 5.13 6,351 14.76 0.0018
2019-02-14 2018-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 151,833 29,345 23.96 5,534 6.24 0.0017
2019-04-23 2018-09-30 13F/A-2 BLACKROCK HEALTH SCIENCES TR COM 09250W107 122,488 1,009 0.83 5,209 11.14 0.0013
2018-11-20 2018-09-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 122,488 0 5,209 0.0013
2018-11-14 2018-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 122,488 1,009 5,209
2019-04-23 2018-06-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 121,479 -12,305 -9.20 4,687 0.11 0.0013
2018-08-14 2018-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 121,479 -12,305 4,687
2019-04-23 2018-03-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 133,784 -2,589 -1.90 4,682 -5.95 0.0013
2018-05-14 2018-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 133,784 -2,589 4,682
2019-04-23 2017-12-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 136,373 5,532 4.23 4,978 4.34 0.0014
2018-02-14 2017-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 136,373 5,532 4,978
2017-11-14 2017-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 130,841 22,707 21.00 4,771 20.39 0.0014
2017-08-11 2017-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 108,134 -20,759 -16.11 3,963 -11.10 0.0012
2017-05-22 2017-03-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 128,893 3,530 2.82 4,458 12.01 0.0014
2017-05-12 2017-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 128,893 4,458
2017-02-22 2016-12-31 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 125,363 -3,806 -2.95 3,980 -10.32 0.0013
2017-02-13 2016-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 125,363 3,980
2016-11-10 2016-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 129,169 15,108 13.25 4,438 9.23 0.0015
2016-08-12 2016-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 114,061 5,097 4.68 4,063 5.18 0.0015
2016-05-12 2016-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 108,964 -1,347 -1.22 3,863 -11.01 0.0015
2016-02-09 2015-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 110,311 -5,885 -5.06 4,341 -0.53 0.0016
2016-02-08 2015-09-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 116,196 -5,624 -4.62 4,364 -16.30 0.0016
2015-11-09 2015-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 116,196 4,364
2015-08-12 2015-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 121,820 -8,758 -6.71 5,214 -7.14 0.0018
2015-05-14 2015-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 130,578 -10,881 -7.69 5,615 -7.04 0.0021
2015-02-13 2014-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 141,459 37,197 35.68 6,040 50.96 0.0022
2014-12-16 2014-09-30 13F/A-1 BLACKROCK HEALTH SCIENCES TR COM 09250W107 104,262 2,116 2.07 4,001 6.64 0.0015
2014-11-14 2014-09-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 104,262 4,001
2014-08-12 2014-06-30 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 102,146 11,970 13.27 3,752 12.40 0.0064
2014-05-13 2014-03-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 90,176 -37,650 -29.45 3,338 -26.31 0.0014
2014-02-13 2013-12-31 13F BLACKROCK HEALTH SCIENCES TR COM 09250W107 127,826 4,685 3.80 4,530 12.83 0.0019
2013-11-13 2013-09-30 13F BLACKROCK HEALTH SCIENCES T COM 09250W107 123,141 8,294 7.22 4,015 12.53 0.0019
2013-08-08 2013-06-30 13F BLACKROCK HEALTH SCIENCES T COM 09250W107 114,847 114,847 3,568 0.0018
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.