% of shares outstanding is not shown for PRUFX: this is a fund line, and we hold no cover-page share count for it at any quarter — a fund's shares outstanding move with creations and redemptions rather than with issuance and buybacks, and it is not the SEC cover-page count this percentage is defined against. The figure is withheld rather than computed against a count that does not exist. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for PRUFX 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 | Sippican Capital Advisors | 12,01512,015 | $1M | — | TRIM -12% |
| 2 | Fulton Bank, N.A. | 3,2363,236 | $311,069 | — | — |
| 3 | Arvest Bank Trust Division | 3,1643,164 | $304,161 | — | NEW |
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 |
|---|---|---|---|---|---|---|---|
| Sippican Capital Advisors | — | — | 15K | 12K | 14K | 12K | $1M |
| Fulton Bank, N.A. | 2K | — | 3K | 3K | 3K | 3K | $311,069 |
| Arvest Bank Trust Division | — | — | — | — | — | 3K | $304,161 |
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 | |
|---|---|---|---|
| Arvest Bank Trust Division | +3,164 | $304,092 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Kohmann Bosshard Financial Services, LLC | −4,919 | $472,765 | CLOSE |
| Sippican Capital Advisors | −1,700 | $163,387 | TRIM |
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 | 3 | 18,415 | — | $2M |
| 2025-Q4 | 3 | 21,870 | — | $2M |
| 2025-Q3 | 2 | 15,603 | — | $2M |
| 2025-Q2 | 3 | 21,849 | — | $2M |
| 2025-Q1 | 3 | 7,176 | — | $688,143 |
| 2024-Q4 | 2 | 4,640 | — | $491,596 |
| 2024-Q3 | 2 | 4,250 | — | $453,649 |
| 2024-Q1 | 1 | 1,272 | — | $124,000 |
| 2023-Q4 | 1 | 172 | — | $14,932 |
| 2023-Q3 | 1 | 166 | — | $13,329 |
| 2023-Q2 | 1 | 166 | — | $13,579 |
| 2023-Q1 | 1 | 657 | — | $41,000 |
| 2022-Q4 | 1 | 657 | — | $41,000 |
| 2022-Q3 | 1 | 636 | — | $41,000 |
| 2022-Q2 | 1 | 636 | — | $43,000 |
| 2022-Q1 | 1 | 636 | — | $57,000 |
| 2021-Q4 | 2 | 829 | — | $89,000 |
| 2021-Q3 | 3 | 3,213 | — | $358,000 |
| 2021-Q2 | 3 | 3,213 | — | $361,000 |
| 2021-Q1 | 2 | 756 | — | $76,000 |
| 2020-Q4 | 2 | 756 | — | $73,000 |
| 2019-Q3 | 1 | 3,168 | — | $215,000 |
| 2019-Q1 | 1 | 4,135 | — | $274,000 |
| 2018-Q4 | 1 | 4,135 | — | $236,000 |
| 2018-Q3 | 1 | 7,030 | — | $509,000 |
| 2018-Q2 | 1 | 16,210 | — | $1M |
| 2018-Q1 | 1 | 16,210 | — | $1M |
| 2017-Q4 | 1 | 16,210 | — | $1M |
| 2017-Q3 | 1 | 16,210 | — | $1M |
