% 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 MDISX 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 | VSM Wealth Advisory, LLC | 1,3661,366 | $78,736 | — | 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 |
|---|---|---|---|---|---|---|---|
| VSM Wealth Advisory, LLC | — | — | — | — | — | 1K | $78,736 |
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 | |
|---|---|---|---|
| VSM Wealth Advisory, LLC | +1,366 | $42,756 | OPEN |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| Motiv8 Investments LLC | −3,192 | $99,910 | CLOSE |
| Garton & Associates Financial Advisors LLC | −1,805 | $56,497 | 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).
| Quarter | Holders | Shares held | % shares out | Value held |
|---|---|---|---|---|
| 2026-Q1 | 1 | 1,366 | — | $78,736 |
| 2025-Q4 | 2 | 4,997 | — | $159,912 |
| 2025-Q3 | 1 | 1,255 | — | $42,796 |
| 2025-Q1 | 1 | 1,255 | — | $39,130 |
| 2020-Q4 | 2 | 12,787 | — | $368,000 |
| 2020-Q3 | 1 | 3,080 | — | $77,000 |
| 2019-Q4 | 2 | 27,219 | — | $849,000 |
| 2019-Q3 | 3 | 2,594,907 | — | $81M |
| 2019-Q2 | 2 | 2,496,310 | — | $77M |
| 2019-Q1 | 4 | 2,422,718 | — | $72M |
| 2018-Q4 | 3 | 2,297,440 | — | $62M |
| 2018-Q3 | 3 | 2,270,024 | — | $75M |
| 2018-Q2 | 2 | 2,076,239 | — | $66M |
| 2018-Q1 | 2 | 2,049,355 | — | $65M |
| 2017-Q4 | 4 | 1,965,883 | — | $64M |
| 2017-Q3 | 4 | 2,983,745 | — | $63M |
| 2017-Q2 | 3 | 1,893,326 | — | $63M |
| 2017-Q1 | 3 | 1,894,402 | — | $62M |
| 2016-Q4 | 2 | 1,882,580 | — | $59M |
| 2016-Q3 | 5 | 1,932,981 | — | $59M |
| 2016-Q2 | 4 | 1,927,847 | — | $57M |
| 2016-Q1 | 3 | 1,906,704 | — | $55M |
| 2015-Q4 | 4 | 2,152,324 | — | $63M |
| 2015-Q3 | 3 | 2,145,046 | — | $66M |
| 2015-Q2 | 4 | 2,151,982 | — | $74M |
| 2015-Q1 | 5 | 2,315,224 | — | $80M |
| 2014-Q4 | 5 | 2,196,520 | — | $73M |
| 2014-Q3 | 5 | 2,121,012 | — | $74M |
| 2014-Q2 | 5 | 2,097,398 | — | $75M |
| 2014-Q1 | 5 | 2,093,721 | — | $72M |
| 2013-Q4 | 4 | 1,708,486 | — | $58M |
| 2013-Q3 | 3 | 1,709,256 | — | $57M |
| 2013-Q2 | 3 | 1,728,068 | — | $55M |
