% of shares outstanding not shown: no SEC cover-page share count falls within 120 days of the 2026-Q1 quarter end, so any percentage would rest on a count that cannot speak for this quarter. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for BKRKY in the served universe — the cohort is size-matched, and an unmatched percentile would compare a micro-cap register to a mega-cap one.
| # | Holder | Shares | Value | % of shares out | Δ QoQ |
|---|---|---|---|---|---|
| 1 | OPAL CAPITAL LLC | 250,179250,179 | $2M | — | NEW |
| 2 | RHUMBLINE ADVISERS | 25,19025,190 | $249,882 | — | TRIM -3% |
| 3 | PNC FINANCIAL SERVICES GROUP, INC. | 6,0186,018 | $59,699 | — | ADD 15% |
| 4 | GAMMA Investing LLC | 3,3653,365 | $33,381 | — | TRIM -26% |
| 5 | NBC SECURITIES, INC. | 1,8521,852 | $18,144 | — | — |
| 6 | Westside Investment Management, Inc. | 594594 | $5,779 | — | — |
Rows rank by the value each filer reported — 13F filers price their own positions, so a holder with fewer shares can rank just above one with more.
| Holder | 2024-Q4 | 2025-Q1 | 2025-Q2 | 2025-Q3 | 2025-Q4 | 2026-Q1 | Latest value |
|---|---|---|---|---|---|---|---|
| OPAL CAPITAL LLC | — | — | — | — | — | 250K | $2M |
| RHUMBLINE ADVISERS | 56K | 36K | 35K | 25K | 26K | 25K | $249,882 |
| PNC FINANCIAL SERVICES GROUP, INC. | 4K | 4K | 5K | 5K | 5K | 6K | $59,699 |
| GAMMA Investing LLC | 8K | 9K | 10K | 9K | 5K | 3K | $33,381 |
| NBC SECURITIES, INC. | — | — | — | 128 | 2K | 2K | $18,144 |
| Westside Investment Management, Inc. | — | — | — | 594 | 594 | 594 | $5,779 |
Shares reported each quarter by the largest current holders. Green = added vs the prior filing, red = trimmed, grey = roughly held; a dash is a quarter with no 13F on file (a gap is skipped, not read as an exit). 13F is filed up to 45 days after quarter-end. Up to 40 quarters (10 years) available — use the selector above.
Holder count only — too few computable %-of-shares-outstanding quarters for a % pane. Line breaks are quarters with no 13F record, never interpolated.
Short interest has its own tab now — open SI →
Source: SEC Form 13F — every institution manager (≥ $100M in 13F securities) reporting a long US-listed position, across ~10,250 filers over 10 years of history. 13F is long-only, US-listed, filed up to 45 days after quarter-end.
| Biggest buyers | Δ shares | Δ value | |
|---|---|---|---|
| OPAL CAPITAL LLC | +250,179 | $2M | OPEN |
| PNC FINANCIAL SERVICES GROUP, INC. | +768 | $7,603 | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| GAMMA Investing LLC | −1,174 | $11,623 | TRIM |
| RHUMBLINE ADVISERS | −704 | $6,970 | TRIM |
| NBC SECURITIES, INC. | −13 | $129 | — |
The 2025-Q4 register is as-filed in ITS OWN share basis; every count below was rebased into the 2026-Q1 basis (no split in between, factor 1). Dollar figures value the SHARE delta at one price — the 2026-03-31 close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure.
13Fs disclose LONG US-listed positions only — shorts, most derivatives, bonds and non-US listings are invisible here, and a filer's quarter-over-quarter change is not necessarily a trade (index rebalances, in-kind transfers and entity successions all read as flow).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 6 | 287,198 | — | $3M |
| 2025-Q4 | 5 | 38,142 | — | $421,557 |
| 2025-Q3 | 5 | 40,059 | — | $466,547 |
| 2025-Q2 | 4 | 51,670 | — | $594,204 |
| 2025-Q1 | 5 | 778,543 | — | $10M |
| 2024-Q4 | 6 | 889,954 | — | $11M |
| 2024-Q3 | 4 | 915,741 | — | $1M |
| 2024-Q2 | 5 | 1,439,580 | — | $6M |
| 2024-Q1 | 6 | 1,509,943 | — | $9M |
| 2023-Q4 | 6 | 1,536,402 | — | $9M |
| 2023-Q3 | 8 | 3,561,589 | — | $39M |
| 2023-Q2 | 9 | 3,627,037 | — | $42M |
| 2023-Q1 | 6 | 3,490,550 | — | $37M |
| 2022-Q4 | 7 | 3,696,304 | — | $59M |
| 2022-Q3 | 6 | 3,771,835 | — | $55M |
| 2022-Q2 | 10 | 3,849,899 | — | $54M |
| 2022-Q1 | 6 | 3,984,619 | — | $65M |
| 2021-Q4 | 7 | 3,991,603 | — | $58M |
| 2021-Q3 | 5 | 4,111,425 | — | $56M |
| 2021-Q2 | 8 | 4,184,534 | — | $57M |
| 2021-Q1 | 8 | 3,110,469 | — | $47M |
| 2020-Q4 | 9 | 3,038,943 | — | $45M |
| 2020-Q3 | 8 | 3,046,036 | — | $31M |
| 2020-Q2 | 10 | 3,196,493 | — | $34M |
| 2020-Q1 | 9 | 3,669,555 | — | $34M |
| 2019-Q4 | 14 | 4,866,263 | — | $77M |
| 2019-Q3 | 14 | 5,009,466 | — | $73M |
| 2019-Q2 | 14 | 5,108,777 | — | $79M |
| 2019-Q1 | 15 | 4,782,105 | — | $69M |
| 2018-Q4 | 10 | 3,851,484 | — | $49M |
| 2018-Q3 | 7 | 4,716,232 | — | $50M |
| 2018-Q2 | 7 | 4,678,437 | — | $46M |
| 2018-Q1 | 9 | 4,656,662 | — | $61M |
| 2017-Q4 | 9 | 4,656,539 | — | $63M |
| 2017-Q3 | 7 | 2,252,136 | — | $51M |
| 2017-Q2 | 7 | 2,186,087 | — | $50M |
| 2017-Q1 | 7 | 2,138,186 | — | $42M |
| 2016-Q4 | 6 | 2,010,012 | — | $35M |
| 2016-Q3 | 4 | 1,972,230 | — | $37M |
| 2016-Q2 | 5 | 1,974,434 | — | $34M |
| 2016-Q1 | 6 | 1,968,881 | — | $30M |
| 2015-Q4 | 5 | 2,045,224 | — | $34M |
| 2015-Q3 | 4 | 2,295,344 | — | $27M |
| 2015-Q2 | 7 | 2,328,290 | — | $36M |
| 2015-Q1 | 8 | 2,641,199 | — | $54M |
| 2014-Q4 | 9 | 2,560,999 | — | $48M |
| 2014-Q3 | 10 | 2,595,091 | — | $44M |
| 2014-Q2 | 11 | 2,621,924 | — | $46M |
| 2014-Q1 | 11 | 2,688,020 | — | $45M |
| 2013-Q4 | 8 | 3,482,692 | — | $41M |
| 2013-Q3 | 8 | 3,458,692 | — | $43M |
| 2013-Q2 | 6 | 2,967,662 | — | $46M |
