% 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 CZBT 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 | Cutler Capital Management, LLC | 28,52528,525 | $1M | — | ADD 13% |
| 2 | Main Street Group, LTD | 2,3352,335 | $87,563 | — | 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 |
|---|---|---|---|---|---|---|---|
| Cutler Capital Management, LLC | 20K | 20K | 20K | 25K | 25K | 29K | $1M |
| Main Street Group, LTD | 2K | 2K | 2K | 2K | — | 2K | $87,563 |
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 | |
|---|---|---|---|
| Cutler Capital Management, LLC | +3,275 | $122,813 | ADD |
| Main Street Group, LTD | +2,335 | $87,563 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| No filer reduced its position this quarter. | |||
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 | 2 | 30,860 | — | $1M |
| 2025-Q4 | 1 | 25,250 | — | $849,915 |
| 2025-Q3 | 2 | 26,885 | — | $856,288 |
| 2025-Q2 | 2 | 22,585 | — | $745,305 |
| 2025-Q1 | 2 | 22,585 | — | $616,571 |
| 2024-Q4 | 2 | 22,585 | — | $666,258 |
| 2024-Q3 | 2 | 22,585 | — | $663,999 |
| 2024-Q2 | 2 | 20,985 | — | $532,669 |
| 2024-Q1 | 3 | 25,191 | — | $650,421 |
| 2023-Q4 | 3 | 25,191 | — | $728,899 |
| 2023-Q3 | 2 | 20,429 | — | $584,474 |
| 2023-Q2 | 1 | 10,500 | — | $292,950 |
| 2023-Q1 | 1 | 20,000 | — | $590,000 |
| 2022-Q4 | 1 | 22,500 | — | $642,375 |
| 2022-Q3 | 1 | 22,500 | — | $626,000 |
| 2022-Q2 | 2 | 30,000 | — | $834,000 |
| 2022-Q1 | 1 | 22,160 | — | $622,000 |
| 2021-Q4 | 2 | 28,129 | — | $649,000 |
| 2021-Q3 | 2 | 27,600 | — | $755,000 |
| 2021-Q2 | 2 | 26,000 | — | $696,000 |
| 2021-Q1 | 2 | 26,000 | — | $663,000 |
| 2020-Q4 | 2 | 26,000 | — | $612,000 |
| 2020-Q3 | 1 | 18,000 | — | $414,000 |
| 2020-Q2 | 2 | 26,000 | — | $659,000 |
| 2020-Q1 | 2 | 26,000 | — | $487,000 |
| 2019-Q4 | 1 | 15,000 | — | $379,000 |
| 2019-Q3 | 2 | 23,000 | — | $560,000 |
| 2019-Q2 | 1 | 8,000 | — | $196,000 |
| 2019-Q1 | 1 | 8,000 | — | $204,000 |
| 2018-Q4 | 1 | 8,000 | — | $188,000 |
| 2018-Q3 | 1 | 8,000 | — | $210,000 |
| 2018-Q2 | 1 | 8,000 | — | $210,000 |
| 2018-Q1 | 1 | 8,000 | — | $194,000 |
| 2017-Q4 | 1 | 8,000 | — | $194,000 |
