% 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 BPTRX 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 | Redwood Wealth Management Group, LLC | 58,16558,165 | $14M | — | ADD 28% |
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 |
|---|---|---|---|---|---|---|---|
| Redwood Wealth Management Group, LLC | 20K | 21K | 42K | 43K | 46K | 58K | $14M |
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.
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 1 | 58,165 | — | $14M |
| 2025-Q4 | 2 | 45,652 | — | $12M |
| 2025-Q3 | 1 | 42,564 | — | $9M |
| 2025-Q2 | 1 |
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 | |
|---|---|---|---|
| Redwood Wealth Management Group, LLC | +12,643 | $3M | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Motiv8 Investments LLC | −130 | $31,090 | CLOSE |
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).
| 41,527 |
| — |
| $8M |
| 2025-Q1 | 1 | 20,768 | — | $4M |
| 2024-Q4 | 1 | 19,684 | — | $4M |
| 2024-Q3 | 1 | 10,014 | — | $2M |
| 2023-Q4 | 3 | 3,392 | — | $541,483 |
| 2023-Q3 | 2 | 73,238 | — | $11M |
| 2023-Q2 | 1 | 1,129 | — | $164,107 |
| 2023-Q1 | 1 | 1,129 | — | $155,340 |
| 2019-Q2 | 1 | 1,459 | — | $87,000 |
| 2019-Q1 | 1 | 1,459 | — | $87,000 |
| 2018-Q4 | 1 | 557 | — | $27,000 |
| 2015-Q1 | 1 | 26,500 | — | $998,000 |
