BLACKROCK SCI & TECH TRM TR (BSTZ) Institutional Shareholders
BLACKROCK SCI & TECH TRM TR (BSTZ) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $657.37M in BSTZ holdings during the latest filing period.
Saba Capital Management, L.P. is currently the largest disclosed institutional shareholder of BSTZ tracked by InsiderSet, reporting ownership valued at approximately $171.08M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $163.04M, representing an estimated loss of -4.70% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 75% of the total disclosed BSTZ value among the investors covered in this analysis. Major shareholders include Saba Capital Management, L.P., Morgan Stanley, Rivernorth Capital Management, Llc, and several other long-term asset managers with concentrated positions in BLACKROCK SCI & TECH TRM TR (BSTZ).
This page ranks the largest institutional BSTZ shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
148
Total Reported Value
$657.37M
Largest Holder
Saba Capital Management, L.P.
Largest Position
$171.08M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
120
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Saba Capital Management, L.P. | 5.23% | 5,696,873 | $171,077,096 | $163,044,505 | -$8,032,591 | -4.70% | |
| Morgan Stanley | 0.01% | 3,336,626 | $100,198,924 | $95,494,236 | -$4,704,688 | -4.70% | |
| Rivernorth Capital Management, Llc | 2.16% | 1,511,481 | $45,389,774 | $43,258,586 | -$2,131,188 | -4.70% | |
| Ubs Group Ag | 0.01% | 1,132,868 | $34,020,026 | $32,422,682 | -$1,597,344 | -4.70% | |
| Bank Of America Corp | 0.00% | 993,064 | $29,821,712 | $28,421,492 | -$1,400,220 | -4.70% | |
| Raymond James Financial Inc | 0.01% | 941,190 | $28,263,945 | $26,936,858 | -$1,327,087 | -4.70% | |
| Invesco Ltd. | 0.00% | 844,911 | $25,372,678 | $24,181,353 | -$1,191,325 | -4.70% | |
| Wedbush Securities Inc | 0.59% | 763,870 | $22,939,000 | $21,861,959 | -$1,077,041 | -4.70% | |
| Lazard Asset Management Llc | 0.03% | 677,993 | $20,360,130 | $19,404,160 | -$955,970 | -4.70% | |
| Karpus Management, Inc. | 0.42% | 483,321 | $14,514,122 | $13,832,647 | -$681,475 | -4.70% | |
| Flagship Harbor Advisors, Llc | 0.37% | 323,702 | $9,720,763 | $9,264,351 | -$456,412 | -4.70% | |
| Z3 Capital Partners, Llc | 2.00% | 316,562 | $9,506,366 | $9,060,004 | -$446,362 | -4.70% | |
| Royal Bank Of Canada | 0.00% | 315,033 | $9,460,000 | $9,016,244 | -$443,756 | -4.69% | |
| Rockefeller Capital Management L.P. | 0.01% | 283,241 | $8,505,744 | $8,106,357 | -$399,387 | -4.70% | |
| Oppenheimer & Co Inc | 0.08% | 257,568 | $7,734,767 | $7,371,596 | -$363,171 | -4.70% | |
| Steward Partners Investment Advisory, Llc | 0.04% | 243,765 | $7,320,263 | $6,976,554 | -$343,709 | -4.70% | |
| Lpl Financial Llc | 0.00% | 193,382 | $5,807,273 | $5,534,593 | -$272,680 | -4.70% | |
| Blue Bell Private Wealth Management, Llc | 0.71% | 190,304 | $5,714,839 | $5,446,500 | -$268,339 | -4.70% | |
| Wealth Enhancement Advisory Services, Llc | 0.01% | 176,994 | $5,215,999 | $5,065,568 | -$150,431 | -2.88% | |
| Potrero Capital Research Llc | 3.08% | 167,198 | $5,020,956 | $4,785,207 | -$235,749 | -4.70% | |
| Thomas J. Herzfeld Advisors, Inc. | 1.53% | 166,033 | $4,985,971 | $4,751,864 | -$234,107 | -4.70% | |
| Osaic Holdings, Inc. | 0.01% | 150,764 | $4,527,977 | $4,314,866 | -$213,111 | -4.71% | |
| Summit Financial, Llc | 0.05% | 138,072 | $4,146,311 | $3,951,621 | -$194,690 | -4.70% | |
| Rfg Advisory, Llc | 0.05% | 97,792 | $2,936,691 | $2,798,807 | -$137,884 | -4.70% | |
| Stifel Financial Corp | 0.00% | 94,558 | $2,839,617 | $2,706,250 | -$133,367 | -4.70% | |
| Sanctuary Advisors, Llc | 0.01% | 93,497 | $2,807,727 | $2,675,884 | -$131,843 | -4.70% | |
| Independent Financial Group, Llc | 0.05% | 91,500 | $2,747,745 | $2,618,730 | -$129,015 | -4.70% | |
| Intrepid Family Office Llc | 2.21% | 80,000 | $2,402,400 | $2,289,600 | -$112,800 | -4.70% | |
| Cetera Investment Advisers | 0.00% | 75,649 | $2,271,718 | $2,165,074 | -$106,644 | -4.69% | |
| 1607 Capital Partners, Llc | 0.17% | 66,250 | $1,989,487 | $1,896,075 | -$93,412 | -4.70% | |
| Truemark Investments, Llc | 0.24% | 64,075 | $1,924,172 | $1,833,827 | -$90,346 | -4.70% | |
| Pmg Family Office Llc | 1.60% | 57,799 | $1,735,704 | $1,654,207 | -$81,497 | -4.70% | |
| Evolve Private Wealth, Llc | 0.10% | 56,833 | $1,706,695 | $1,626,560 | -$80,135 | -4.70% | |
| Advisors Asset Management, Inc. | 0.02% | 43,607 | $1,698,057 | $1,248,032 | -$450,025 | -26.50% | |
| Janney Montgomery Scott Llc | 0.00% | 56,323 | $1,691,000 | $1,611,964 | -$79,036 | -4.67% | |
| Susquehanna International Group, Llp | 0.00% | 53,776 | $1,614,893 | $1,539,069 | -$75,824 | -4.70% | |
| Family Manage Llc | 0.17% | 53,556 | $1,608,287 | $1,532,773 | -$75,514 | -4.70% | |
| Commonwealth Equity Services, Llc | 0.00% | 52,134 | $1,565,590 | $1,492,075 | -$73,515 | -4.70% | |
| Atlas Wealth Llc | 0.22% | 50,993 | $1,531,320 | $1,459,420 | -$71,900 | -4.70% | |
| Wells Fargo & Company/Mn | 0.00% | 50,643 | $1,520,818 | $1,449,403 | -$71,415 | -4.70% | |
| Noble Wealth Management Pbc | 0.66% | 48,025 | $1,442,191 | $1,374,476 | -$67,716 | -4.70% | |
| Nwf Advisory Services Inc. | 0.13% | 44,315 | $1,330,783 | $1,268,295 | -$62,488 | -4.70% | |
| Apollon Wealth Management, Llc | 0.02% | 42,292 | $1,270,029 | $1,210,397 | -$59,632 | -4.70% | |
| Wny Asset Management, Llc | 0.10% | 38,501 | $1,156,189 | $1,101,899 | -$54,290 | -4.70% | |
| Newedge Advisors, Llc | 0.00% | 38,384 | $1,152,686 | $1,098,550 | -$54,136 | -4.70% | |
| Ameriprise Financial Inc | 0.00% | 37,720 | $1,133,965 | $1,079,546 | -$54,419 | -4.80% | |
| Mercer Global Advisors Inc | 0.00% | 37,585 | $1,128,682 | $1,075,683 | -$52,999 | -4.70% | |
| Lm Advisors Llc | 0.13% | 37,591 | $1,125,000 | $1,075,854 | -$49,146 | -4.37% | |
| Formidable Asset Management, Llc | 0.17% | 47,582 | $1,053,941 | $1,361,797 | +$307,856 | +29.21% | |
| Anchor Capital Management Group Inc | 0.72% | 35,000 | $1,051,050 | $1,001,700 | -$49,350 | -4.70% |
Frequently asked questions about BSTZ
Who owns the most BSTZ stock?
The largest holders of BSTZ are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for BLACKROCK SCI & TECH TRM TR (BSTZ).
Is BSTZ widely held by superinvestors?
Many widely followed stocks like BSTZ appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly BSTZ is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.