% 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 MHVIY 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 | RHUMBLINE ADVISERS | 66,31066,310 | $2M | — | ADD 10% |
| 2 | SkyView Investment Advisors, LLC | 49,95649,956 | $1M | — | — |
| 3 | L & S Advisors Inc | 15,45015,450 | $425,802 | — | NEW |
| 4 | GAMMA Investing LLC | 3,3283,328 | $91,720 | — | — |
| 5 | Salomon & Ludwin, LLC | 1,9731,973 | $58,953 | — | ADD 79% |
| 6 | PNC FINANCIAL SERVICES GROUP, INC. | 1,3051,305 | $35,966 | — | TRIM -42% |
| 7 | NBC SECURITIES, INC. | 944944 | $25,058 | — | NEW |
| 8 | Ancora Advisors LLC | 381381 | $10,500 | — | ADD 281% |
| 9 | Financial Gravity Asset Management, Inc. | 342342 | $9,426 | — | NEW |
| 10 | IMA Advisory Services, Inc. | 7575 | $2,067 | — | ADD 7% |
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 |
|---|---|---|---|---|---|---|---|
| RHUMBLINE ADVISERS | 15K | 19K | 19K | 41K | 60K | 66K | $2M |
| SkyView Investment Advisors, LLC | — | 32K | 25K | 50K | 50K | 50K | $1M |
| L & S Advisors Inc | — | — | — | — | — | 15K | $425,802 |
| GAMMA Investing LLC | 1K | 2K | 2K | 3K | 3K | 3K | $91,720 |
| Salomon & Ludwin, LLC | — | — | 21 | 1K | 1K | 2K | $58,953 |
| PNC FINANCIAL SERVICES GROUP, INC. | 552 | 509 | 662 | 2K | 2K | 1K | $35,966 |
| NBC SECURITIES, INC. | — | — | — | — | — | 944 | $25,058 |
| Ancora Advisors LLC | — | — | 50 | 100 | 100 | 381 | $10,500 |
| Financial Gravity Asset Management, Inc. | — | — | — | — | — | 342 | $9,426 |
| IMA Advisory Services, Inc. | — | — | — | — | 70 | 75 | $2,067 |
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 | 10 | 140,064 | — | $4M |
| 2025-Q4 | 9 | 117,039 | — | $3M |
| 2025-Q3 | 9 | 152,053 | — | $4M |
| 2025-Q2 | 9 | 86,854 | — | $4M |
| 2025-Q1 | 6 | 66,284 | — | $2M |
| 2024-Q4 | 5 | 30,469 | — | $852,516 |
| 2024-Q3 | 5 | 100,714 | — | $3M |
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 | |
|---|---|---|---|
| L & S Advisors Inc | +15,450 | $425,802 | OPEN |
| RHUMBLINE ADVISERS | +6,113 | $168,474 | ADD |
| NBC SECURITIES, INC. | +944 | $26,017 | OPEN |
| Salomon & Ludwin, LLC | +871 | $24,005 | ADD |
| Financial Gravity Asset Management, Inc. | +342 | $9,426 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| PNC FINANCIAL SERVICES GROUP, INC. | −964 | $26,568 | TRIM |
| AMERIFLEX GROUP, INC. | −130 | $3,583 | CLOSE |
| Signature Equity Partners, LLC | −66 | $1,819 | 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).
