% of shares outstanding not shown: this line files 20-F annual reports only — a foreign private issuer whose US listing trades as ADSs (depositary receipts), while its cover-page share count is in ORDINARY shares. The depositary ratio is not in our data. The count we hold for this line is 210,920,493 shares (as of 2025-12-31, source company_meta:diluted-was-fallback). Dividing one by the other is wrong by the whole ratio (a 5:1 ADR reads one fifth of the true percentage), so the percentage is withheld rather than served wrong. Holder share counts are shown as filed.
Crowding percentile withheld — no market cap for VIOT 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 | ACADIAN ASSET MANAGEMENT LLC | 1,353,7221.4M | $1M | — | ADD 19% |
| 2 | RENAISSANCE TECHNOLOGIES LLC | 703,480703,480 | $780,863 | — | ADD 111% |
| 3 | MORGAN STANLEY | 526,712526,712 | $584,650 | — | ADD 295% |
| 4 | Point72 Asset Management, L.P. | 493,500493,500 | $547,785 | — | TRIM -9% |
| 5 | TWO SIGMA INVESTMENTS, LP | 242,168242,168 | $268,806 | — | ADD 65% |
| 6 | Diametric Capital, LP | 224,543224,543 | $249,242 | — | NEW |
| 7 | JPMORGAN CHASE & CO | 176,134176,134 | $181,418 | — | TRIM -27% |
| 8 | Oasis Management Co Ltd. | 100,000100,000 | $111,000 | — | — |
| 9 | JANE STREET GROUP, LLC | 62,62862,628 | $69,517 | — | ADD 146% |
| 10 | PRELUDE CAPITAL MANAGEMENT, LLC | 34,17534,175 | $37,934 | — | NEW |
| 11 | Mandatum Life Insurance Co Ltd | 34,00034,000 | $37,740 | — | — |
| 12 | BANK OF AMERICA CORP /DE/ | 30,42830,428 | $33,775 | — | NEW |
| 13 | Verdad Advisers, LP | 29,69329,693 | $32,959 | — | TRIM -44% |
| 14 | XTX Topco Ltd | 27,35227,352 | $30,361 | — | NEW |
| 15 | PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 23,42323,423 | $26,000 | — | — |
| 16 | NOMURA HOLDINGS INC | 23,00023,000 | $25,530 | — | — |
| 17 | GEODE CAPITAL MANAGEMENT, LLC | 21,46721,467 | $23,828 | — | — |
| 18 | DIMENSIONAL FUND ADVISORS LP | 18,77918,779 | $20,844 | — | TRIM -71% |
| 19 | Police & Firemen's Retirement System of New Jersey | 15,09915,099 | $16,760 | — | — |
| 20 | BARCLAYS PLC | 14,99514,995 | $16,644 | — | TRIM -94% |
| 21 | Virtu Financial LLC | 12,54412,544 | $14,000 | — | NEW |
| 22 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 11,20511,205 | $12,438 | — | — |
| 23 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 11,02511,025 | $12,238 | — | NEW |
| 24 | Russell Investments Group, Ltd. | 7,8177,817 | $8,051 | — | — |
| 25 | UBS Group AG | 3,1703,170 | $3,518 | — | TRIM -66% |
| 26 | Tower Research Capital LLC (TRC) | 2,9852,985 | $3,313 | — | NEW |
| 27 | OSAIC HOLDINGS, INC. | 1,4691,469 | $1,631 | — | — |
| 28 | ROYAL BANK OF CANADA | 642642 | $1,000 | — | ADD 269% |
| 29 | RHUMBLINE ADVISERS | 189189 | $209 | — | — |
| 30 | BlackRock, Inc. | 7777 | $85 | — | — |
| 31 | BNP PARIBAS FINANCIAL MARKETS | 7070 | $78 | — | NEW |
| 32 | SBI Securities Co., Ltd. | 2020 | $22 | — | TRIM -5% |
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 |
|---|---|---|---|---|---|---|---|
| ACADIAN ASSET MANAGEMENT LLC | 680K | 697K | 865K | 1.0M | 1.1M | 1.4M | $1M |
| RENAISSANCE TECHNOLOGIES LLC | 144K | 160K | 397K | 378K | 334K | 703K | $780,863 |
| MORGAN STANLEY | 23K | 26K | 38K | 141K | 133K | 527K | $584,650 |
| Point72 Asset Management, L.P. | — | — | — | — | 544K | 494K | $547,785 |
| TWO SIGMA INVESTMENTS, LP | — | — | — | 157K | 147K | 242K | $268,806 |
| Diametric Capital, LP | — | — | — | — | — | 225K | $249,242 |
| JPMORGAN CHASE & CO | — | — | 304K | 480K | 241K | 176K | $181,418 |
| Oasis Management Co Ltd. | — | — | — | 100K | 100K | 100K | $111,000 |
| JANE STREET GROUP, LLC | — | — | — | — | 25K | 63K | $69,517 |
| PRELUDE CAPITAL MANAGEMENT, LLC | — | — | — | — | — | 34K | $37,934 |
| Mandatum Life Insurance Co Ltd | 34K | 34K | 34K | 34K | 34K | 34K | $37,740 |
| BANK OF AMERICA CORP /DE/ | — | — | — | 1K | — | 30K | $33,775 |
| Verdad Advisers, LP | — | — | — | — | 53K | 30K | $32,959 |
| XTX Topco Ltd | — | — | 15K | 50K | — | 27K | $30,361 |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | 32K | 32K | 32K | 32K | 23K | 23K | $26,000 |
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 | |
|---|---|---|---|
| MORGAN STANLEY | +393,403 | $436,677 | ADD |
| RENAISSANCE TECHNOLOGIES LLC | +369,616 | $410,274 | ADD |
| Diametric Capital, LP | +224,543 | $249,243 | OPEN |
| ACADIAN ASSET MANAGEMENT LLC | +220,872 | $245,168 | ADD |
| TWO SIGMA INVESTMENTS, LP | +95,106 | $105,568 | ADD |
| Biggest sellers | Δ shares | Δ value | |
|---|---|---|---|
| BARCLAYS PLC | −238,985 | $265,273 | TRIM |
| CITADEL ADVISORS LLC | −106,655 | $118,387 | CLOSE |
| JPMORGAN CHASE & CO | −64,859 | $71,993 | TRIM |
| Quadrature Capital Ltd | −63,827 | $70,848 | CLOSE |
| Point72 Asset Management, L.P. | −50,700 | $56,277 | 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 | 32 | 4,206,511 | — | $5M |
| 2025-Q4 | 31 | 3,421,667 | — | $6M |
| 2025-Q3 | 30 | 3,144,718 | — | $10M |
| 2025-Q2 | 17 | 1,990,194 | — | $3M |
| 2025-Q1 | 14 | 1,179,090 | — | $2M |
| 2024-Q4 | 14 | 1,186,310 | — | $2M |
| 2024-Q3 | 11 | 1,198,444 | — | $2M |
| 2024-Q2 | 14 | 912,404 | — | $1M |
| 2024-Q1 | 12 | 847,181 | — | $1M |
| 2023-Q4 | 12 | 863,935 | — | $854,682 |
| 2023-Q3 | 14 | 879,316 | — | $880,476 |
| 2023-Q2 | 14 | 1,012,360 | — | $882,622 |
| 2023-Q1 | 15 | 1,177,202 | — | $1M |
| 2022-Q4 | 11 | 1,166,788 | — | $1M |
| 2022-Q3 | 15 | 1,332,293 | — | $2M |
| 2022-Q2 | 19 | 1,470,998 | — | $3M |
| 2022-Q1 | 22 | 1,497,250 | — | $3M |
| 2021-Q4 | 25 | 1,994,457 | — | $5M |
| 2021-Q3 | 28 | 3,088,120 | — | $14M |
| 2021-Q2 | 32 | 3,420,955 | — | $29M |
| 2021-Q1 | 31 | 1,852,169 | — | $17M |
| 2020-Q4 | 26 | 8,950,660 | — | $46M |
| 2020-Q3 | 20 | 10,783,227 | — | $65M |
| 2020-Q2 | 24 | 10,118,813 | — | $54M |
| 2020-Q1 | 25 | 10,784,299 | — | $47M |
| 2019-Q4 | 36 | 12,343,807 | — | $99M |
| 2019-Q3 | 23 | 13,213,426 | — | $108M |
| 2019-Q2 | 24 | 11,527,941 | — | $94M |
| 2019-Q1 | 14 | 8,511,670 | — | $94M |
| 2018-Q4 | 12 | 8,511,725 | — | $66M |
| 2018-Q3 | 21 | 10,119,714 | — | $91M |
