BSTZ Institutional Ownership & Shareholders
BLACKROCK SCI & TECH TRM TR (BSTZ) is currently held by 145 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $636.57M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
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 $154.10M, representing an estimated loss of -9.92% 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
145
Total Reported Value
$636.57M
Largest Holder
Saba Capital Management, L.P.
Largest Position
$171.08M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
86
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 | $154,100,415 | -$16,976,681 | -9.92% | |
| Morgan Stanley | 0.01% | 3,336,626 | $100,198,924 | $90,255,733 | -$9,943,191 | -9.92% | |
| Rivernorth Capital Management, Llc | 2.16% | 1,511,481 | $45,389,774 | $40,885,561 | -$4,504,213 | -9.92% | |
| Ubs Group Ag | 0.01% | 1,132,868 | $34,020,026 | $30,644,079 | -$3,375,947 | -9.92% | |
| Bank Of America Corp | 0.00% | 993,064 | $29,821,712 | $26,862,381 | -$2,959,331 | -9.92% | |
| Raymond James Financial Inc | 0.01% | 941,190 | $28,263,945 | $25,459,190 | -$2,804,756 | -9.92% | |
| Invesco Ltd. | 0.00% | 844,911 | $25,372,678 | $22,854,843 | -$2,517,835 | -9.92% | |
| Lazard Asset Management Llc | 0.03% | 677,993 | $20,360,130 | $18,339,711 | -$2,020,419 | -9.92% | |
| Karpus Management, Inc. | 0.42% | 483,321 | $14,514,122 | $13,073,833 | -$1,440,289 | -9.92% | |
| Flagship Harbor Advisors, Llc | 0.37% | 335,263 | $9,863,453 | $9,068,864 | -$794,589 | -8.06% | |
| Z3 Capital Partners, Llc | 2.00% | 316,562 | $9,506,366 | $8,563,002 | -$943,364 | -9.92% | |
| Royal Bank Of Canada | 0.00% | 315,033 | $9,460,000 | $8,521,643 | -$938,357 | -9.92% | |
| Oppenheimer & Co Inc | 0.10% | 312,187 | $9,184,542 | $8,444,658 | -$739,884 | -8.06% | |
| Rockefeller Capital Management L.P. | 0.01% | 283,241 | $8,505,744 | $7,661,669 | -$844,075 | -9.92% | |
| Steward Partners Investment Advisory, Llc | 0.04% | 243,765 | $7,320,263 | $6,593,843 | -$726,420 | -9.92% | |
| Lpl Financial Llc | 0.00% | 193,382 | $5,807,273 | $5,230,983 | -$576,290 | -9.92% | |
| Blue Bell Private Wealth Management, Llc | 0.67% | 190,230 | $5,596,569 | $5,145,722 | -$450,848 | -8.06% | |
| Wealth Enhancement Advisory Services, Llc | 0.01% | 184,827 | $5,528,187 | $4,999,570 | -$528,617 | -9.56% | |
| Potrero Capital Research Llc | 3.08% | 167,198 | $5,020,956 | $4,522,706 | -$498,250 | -9.92% | |
| Thomas J. Herzfeld Advisors, Inc. | 1.53% | 166,033 | $4,985,971 | $4,491,193 | -$494,778 | -9.92% | |
| Osaic Holdings, Inc. | 0.01% | 150,764 | $4,527,977 | $4,078,166 | -$449,811 | -9.93% | |
| Summit Financial, Llc | 0.05% | 138,072 | $4,146,311 | $3,734,848 | -$411,463 | -9.92% | |
| Rfg Advisory, Llc | 0.05% | 97,792 | $2,936,691 | $2,645,274 | -$291,417 | -9.92% | |
| Stifel Financial Corp | 0.00% | 94,558 | $2,839,617 | $2,557,794 | -$281,823 | -9.92% | |
| Sanctuary Advisors, Llc | 0.01% | 93,497 | $2,807,727 | $2,529,094 | -$278,633 | -9.92% | |
| Independent Financial Group, Llc | 0.05% | 91,975 | $2,705,905 | $2,487,924 | -$217,981 | -8.06% | |
| Intrepid Family Office Llc | 2.21% | 80,000 | $2,402,400 | $2,164,000 | -$238,400 | -9.92% | |
| Cetera Investment Advisers | 0.00% | 75,649 | $2,271,718 | $2,046,305 | -$225,413 | -9.92% | |
| 1607 Capital Partners, Llc | 0.17% | 66,250 | $1,989,487 | $1,792,063 | -$197,425 | -9.92% | |
| Truemark Investments, Llc | 0.24% | 64,075 | $1,924,172 | $1,733,229 | -$190,943 | -9.92% | |
| Pmg Family Office Llc | 1.59% | 58,427 | $1,718,922 | $1,580,450 | -$138,472 | -8.06% | |
| Evolve Private Wealth, Llc | 0.10% | 56,833 | $1,706,695 | $1,537,333 | -$169,362 | -9.92% | |
| Advisors Asset Management, Inc. | 0.02% | 43,607 | $1,698,057 | $1,179,569 | -$518,488 | -30.53% | |
| Janney Montgomery Scott Llc | 0.00% | 56,323 | $1,691,000 | $1,523,537 | -$167,463 | -9.90% | |
| Susquehanna International Group, Llp | 0.00% | 53,776 | $1,614,893 | $1,454,641 | -$160,252 | -9.92% | |
| Family Manage Llc | 0.17% | 53,556 | $1,608,287 | $1,448,690 | -$159,597 | -9.92% | |
| Atlas Wealth Llc | 0.22% | 50,993 | $1,531,320 | $1,379,361 | -$151,959 | -9.92% | |
| Wells Fargo & Company/Mn | 0.00% | 50,643 | $1,520,818 | $1,369,893 | -$150,925 | -9.92% | |
| Noble Wealth Management Pbc | 0.65% | 48,250 | $1,419,515 | $1,305,163 | -$114,353 | -8.06% | |
| Commonwealth Equity Services, Llc | 0.00% | 46,622 | $1,371,610 | $1,261,125 | -$110,485 | -8.06% | |
| Nwf Advisory Services Inc. | 0.13% | 46,616 | $1,371,456 | $1,260,963 | -$110,493 | -8.06% | |
| Apollon Wealth Management, Llc | 0.01% | 42,380 | $1,246,830 | $1,146,379 | -$100,451 | -8.06% | |
| Wny Asset Management, Llc | 0.10% | 38,501 | $1,156,189 | $1,041,452 | -$114,737 | -9.92% | |
| Newedge Advisors, Llc | 0.00% | 38,384 | $1,152,686 | $1,038,287 | -$114,399 | -9.92% | |
| Ameriprise Financial Inc | 0.00% | 37,720 | $1,133,965 | $1,020,326 | -$113,639 | -10.02% | |
| Mercer Global Advisors Inc | 0.00% | 37,585 | $1,128,682 | $1,016,674 | -$112,008 | -9.92% | |
| Lm Advisors Llc | 0.13% | 37,591 | $1,125,000 | $1,016,837 | -$108,163 | -9.61% | |
| D.A. Davidson & Co. | 0.01% | 37,009 | $1,088,819 | $1,001,093 | -$87,726 | -8.06% | |
| Formidable Asset Management, Llc | 0.17% | 47,582 | $1,053,941 | $1,287,093 | +$233,152 | +22.12% | |
| Jane Street Group, Llc | 0.00% | 33,393 | $1,002,792 | $903,281 | -$99,511 | -9.92% |
Frequently asked questions about BSTZ
Who are the largest institutional holders of BSTZ?
The largest institutional holders of BSTZ reported in the latest SEC Form 13F filings include Saba Capital Management, L.P., Morgan Stanley, Rivernorth Capital Management, Llc, Ubs Group Ag, and Bank Of America Corp. InsiderSet ranks institutional holders by their latest reported BSTZ position.
What is BSTZ institutional ownership?
This page tracks BSTZ positions reported by institutional investment managers through SEC Form 13F. BLACKROCK SCI & TECH TRM TR (BSTZ) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own BSTZ?
InsiderSet currently tracks 145 institutional managers reporting BSTZ holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of BSTZ shareholders.
How much BSTZ stock do institutions own?
Institutional investment managers disclosed approximately $636.57M in BSTZ holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was BSTZ institutional ownership last updated?
The latest BSTZ institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional BSTZ holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its BSTZ position after the reporting date.
Are institutions buying or selling BSTZ?
Institutional buying and selling can be analyzed by comparing BSTZ positions across consecutive 13F reporting periods. InsiderSet's BSTZ Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View BSTZ ownership changes.
How has BSTZ institutional ownership changed over time?
InsiderSet tracks BSTZ institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.