貝萊德科技信託
US ˙ NYSE ˙ US09258G1040

SecurityBST / BlackRock Science and Technology Trust
InstitutionKarpus Management, Inc.
ManagerGeorge Karpus
Ownership 9.00%
Karpus Management, Inc. ownership in BST / BlackRock Science and Technology Trust
Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date
Effective
Date
Form Prev
Shares
Latest
Shares
ΔShares
(Percent)
Ownership
(Percent)
ΔOwnership
(Percent)
2018-02-14 2018-02-14 13G/A 1,208,562 9.00 0.00
2017-02-14 2017-02-14 13G/A 1,126,159 1,208,562 7.32 9.00 0.00
2016-02-12 2016-02-12 13G 1,126,159 9.00

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-14 2026-03-31 13F BLACKROCK SCIENCE & TECH TR SHS 09258G104 562,909 19,362 3.56 20,462 -7.14 0.6384
2026-02-17 2025-12-31 13F/A-1 BLACKROCK SCIENCE & TECH TR SHS 09258G104 543,547 182,447 50.53 22,035 47.54 0.6767
2025-11-14 2025-09-30 13F BLACKROCK SCIENCE & TECH TR SHS 09258G104 361,100 38,117 11.80 14,935 21.15 0.4730
2025-08-14 2025-06-30 13F BLACKROCK SCIENCE & TECH TR SHS 09258G104 322,983 22,215 7.39 12,328 24.25 0.3975
2025-05-14 2025-03-31 13F BLACKROCK SCIENCE & TECH TR SHS 09258G104 300,768 41,345 15.94 9,922 4.62 0.3216
2025-02-14 2024-12-31 13F BLACKROCK SCIENCE & TECH TR SHS 09258G104 259,423 135,891 110.00 9,485 116.68 0.2805
2024-11-13 2024-09-30 13F BLACKROCK SCIENCE & TECH TR SHS 09258G104 123,532 123,532 4,378 0.1216
2023-02-15 2022-12-31 13F BLACKROCK SCIENCE & TECH TR SHS SHS 09258G104 0 -15,675 -100.00 0 -100.00
2022-11-14 2022-09-30 13F BLACKROCK SCIENCE & TECH TR SHS SHS 09258G104 15,675 -120,461 -88.49 461 -89.58 0.0162
2022-08-12 2022-06-30 13F BLACKROCK SCIENCE & TECH TR SHS SHS 09258G104 136,136 -167,664 -55.19 4,423 -66.35 0.1487
2022-05-10 2022-03-31 13F BLACKROCK SCIENCE & TECH TR SHS SHS 09258G104 303,800 -156,410 -33.99 13,145 -42.84 0.3995
2022-02-14 2021-12-31 13F BLACKROCK SCIENCE & TECH TR SHS SHS 09258G104 460,210 166,683 56.79 22,997 50.21 0.6610
2022-02-11 2021-09-30 13F/A-1 BLACKROCK SCIENCE & TECH TR SHS SHS 09258G104 293,527 293,527 15,310 0.4556
2021-11-12 2021-09-30 13F BLACKROCK SCIENCE & TECH TR SHS SHS 09258G104 293,527 293,527 15,310 0.4838
2020-08-17 2020-06-30 13F/A-1 BLACKROCK SCIENCE & TECHNOLO SHS COM 09258G104 0 -293,266 -100.00 0 -100.00
2020-08-14 2020-06-30 13F BLACKROCK SCIENCE & TECHNOLO SHS COM 09258G104 0 0
2020-05-18 2020-03-31 13F BLACKROCK SCIENCE & TECHNOLO SHS COM 09258G104 293,266 293,266 8,414 0.3226
2018-02-14 2017-12-31 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 0 -283,222 -100.00 0 -100.00
2017-12-01 2017-09-30 13F/A-1 BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 283,222 -385,372 -57.64 6,919 -53.40 0.3511
2017-11-14 2017-09-30 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 283,222 6,919
2017-08-14 2017-06-30 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 668,594 -502,500 -42.91 14,849 -40.08 0.7508
2017-05-15 2017-03-31 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 1,171,094 -36,378 -3.01 24,780 14.39 1.2807
2017-02-14 2016-12-31 13F BLACKROCK SCIENCE & TECH TR SHS COM 09258G104 1,207,472 -70,941 -5.55 21,662 -9.05 1.2449
2016-11-14 2016-09-30 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 1,278,413 -10,335 -0.80 23,817 12.01 1.2586
2016-08-15 2016-06-30 13F BLACKROCK SCIENCE & TECH TR SHS COM 09258G104 1,288,748 2,330 0.18 21,264 -2.77 1.0907
2016-05-13 2016-03-31 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 1,286,418 162,449 14.45 21,869 12.40 0.9941
2016-02-12 2015-12-31 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 1,123,969 1,123,969 0.00 19,456 0.8739
2015-11-13 2015-09-30 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 0 -389,578 -100.00 0 -100.00
2015-08-14 2015-06-30 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 389,578 203,572 109.44 6,876 107.36 0.3225
2015-05-15 2015-03-31 13F BLACKROCK SCIENCE & TECHNOLOGY TRUST COM 09258G104 186,006 186,006 3,316 0.1544
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.