% 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 NTRP 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 | ARMISTICE CAPITAL, LLC | 675,117675,117 | $2M | — | TRIM -32% |
| 2 | HighTower Advisors, LLC | 191,755191,755 | $623,204 | — | NEW |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 127,318127,318 | $413,784 | — | NEW |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 122,635122,635 | $398,563 | — | ADD 208% |
| 5 | VANGUARD FIDUCIARY TRUST CO | 58,45958,459 | $189,992 | — | NEW |
| 6 | UBS Group AG | 12,86612,866 | $41,815 | — | ADD 5088% |
| 7 | NORTHERN TRUST CORP | 12,49312,493 | $40,602 | — | NEW |
| 8 | Tower Research Capital LLC (TRC) | 1,1091,109 | $3,604 | — | TRIM -35% |
| 9 | GROUP ONE TRADING LLC | 4747 | $153 | — | — |
| 10 | Physician Wealth Advisors, Inc. | 2020 | $65 | — | — |
| 11 | Wealth Preservation Advisors, LLC | 1515 | $49 | — | — |
| 12 | HARBOUR INVESTMENTS, INC. | 33 | $10 | — | — |
| 13 | Caitong International Asset Management Co., Ltd | 33 | $10 | — | NEW |
| 14 | SBI Securities Co., Ltd. | 22 | $7 | — | — |
| 15 | WELLS FARGO & COMPANY/MN | 11 | $3 | — | — |
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 |
|---|---|---|---|---|---|---|---|
| ARMISTICE CAPITAL, LLC | — | — | — | — | 1.0M | 675K | $2M |
| HighTower Advisors, LLC | — | — | — | — | — | 192K | $623,204 |
| VANGUARD CAPITAL MANAGEMENT LLC | — | — | — | — | — | 127K | $413,784 |
| GEODE CAPITAL MANAGEMENT, LLC | — | 13K | 14K | 33K | 40K | 123K | $398,563 |
| VANGUARD FIDUCIARY TRUST CO | — | — | — | — | — | 58K | $189,992 |
| UBS Group AG | 100 | 2K | 27K | 35K | 248 | 13K | $41,815 |
| NORTHERN TRUST CORP | — | — | — | — | — | 12K | $40,602 |
| Tower Research Capital LLC (TRC) | — | 527 | 159 | 689 | 2K | 1K | $3,604 |
| GROUP ONE TRADING LLC | 267 | 267 | 47 | 47 | 47 | 47 | $153 |
| Physician Wealth Advisors, Inc. | 20 | 20 | 20 | 20 | 20 | 20 | $65 |
| Wealth Preservation Advisors, LLC | — | 15 | 15 | 15 | 15 | 15 | $49 |
| HARBOUR INVESTMENTS, INC. | — | 3 | 3 | 3 | 3 | 3 | $10 |
| Caitong International Asset Management Co., Ltd | — | — | — | — | — | 3 | $10 |
| SBI Securities Co., Ltd. | 205 | 5 | 5 | 2 | 2 | 2 | $7 |
| WELLS FARGO & COMPANY/MN | — | — | — | 1 | 1 | 1 | $3 |
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 | 15 | 1,201,843 | — | $4M |
| 2025-Q4 | 15 | 1,117,705 | — | $4M |
| 2025-Q3 | 14 | 108,838 | — | $365,329 |
| 2025-Q2 | 10 | 41,298 | — | $145,926 |
| 2025-Q1 | 12 | 15,319 | — | $87,164 |
| 2024-Q4 | 7 | 609 | — | $3,673 |
| 2024-Q3 | 9 | 7,132 | — | $23,008 |
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 | |
|---|---|---|---|
| HighTower Advisors, LLC | +191,755 | — | OPEN |
| VANGUARD CAPITAL MANAGEMENT LLC | +127,318 | — | OPEN |
| GEODE CAPITAL MANAGEMENT, LLC | +82,783 | — | ADD |
| VANGUARD FIDUCIARY TRUST CO | +58,459 | — | OPEN |
| UBS Group AG | +12,618 | — | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| ARMISTICE CAPITAL, LLC | −324,883 | — | TRIM |
| VANGUARD GROUP INC | −43,709 | — | CLOSE |
| CITADEL ADVISORS LLC | −32,056 | — | CLOSE |
| Tower Research Capital LLC (TRC) | −593 | — | TRIM |
| BANK OF AMERICA CORP /DE/ | −43 | — | 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 quarter-end close — rather than differencing two filings' own reported values, which would mix the quarter's price move into the trade figure. No licensed quarter-end close is stored for this line, so the dollar columns are withheld; share counts stand.
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).
| 2024-Q2 | 7 | 5,092 | — | $10,133 |
| 2024-Q1 | 6 | 3,116 | — | $14,051 |
| 2023-Q4 | 9 | 29,709 | — | $88,660 |
| 2023-Q3 | 7 | 16,429 | — | $50,272 |
