21Vianet
- Market cap
- 1.54B
- P/E (TTM)i
- -4.24
- P/Bi
- 2.53
- EPSi
- -0.14
- Div yieldi
- 0.00%
- 52W posi
- 3%
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
- The number of reporting institutions decreased by 2 in the most recent period (2026/Q3).
- Total institutional ownership fell 0.3 percentage points.
Institutional ownership
- Held by institutions
- 96.75% -0.27pp
- Institutions
- 193 -2
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions trimmed shares last reporting period, and the stock has seen net inflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Top holders as of 2026-05-13
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
23 filings tracked · 7 buys · 5 sells
| Name | Role | Stake |
|---|---|---|
| Shandong Hi-Speed Holdings Group Limited | -- | 38.08% |
| Sheng Chen | Co-Founder & Executive Chairperson | 5.76% |
| Yoshihisa Ueno | Independent Director | 0.32% |
| Chung-Hou Tai | Independent Director | 0.07% |
| Xiaoheng Shao | Independent Director | 0.06% |
| Lifeng Chen | Independent Director | 0.03% |
| Zhenqing Zhang | Former Advisor | 0.00% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-07-30 | Lifeng Chen | Independent Director | Derivative Exercise and Retained | +13,924 | -- |
| 2026-05-31 | Xiaoheng Shao | Independent Director | Open Market Disposition | -10,000 | $10.28 |
| 2026-05-17 | Zhenqing Zhang | Former Advisor | Derivative Exercise and Sale | -9,072 | $1.69 |
| 2026-05-14 | Yoshihisa Ueno | Independent Director | Other Derivative Acquisition | +731,304 | -- |
| 2026-05-14 | Chung-Hou Tai | Independent Director | Other Derivative Acquisition | +243,768 | -- |
| 2026-05-14 | Xiaoheng Shao | Independent Director | Other Derivative Acquisition | +243,768 | -- |
| 2026-05-14 | Zhenqing Zhang | Former Advisor | Other Derivative Acquisition | +42,996 | -- |
| 2026-05-14 | Zhenqing Zhang | Former Advisor | Derivative Exercise and Retained | +33,924 | -- |
| 2026-04-29 | Lifeng Chen | Independent Director | Derivative Exercise and Retained | +13,924 | -- |
| 2026-03-22 | Lifeng Chen | Independent Director | Open Market Disposition | -13,924 | $9.03 |
| 2026-03-19 | Xiaoheng Shao | Independent Director | Intent to Sell (Form 144) | -150,000 | $9.33 |
| 2026-03-16 | Yoshihisa Ueno | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2026-03-16 | Chung-Hou Tai | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2026-03-16 | Sheng Chen | Co-Founder & Executive Chairperson | Initial Statement of Beneficial | 0 | -- |
| 2026-03-16 | Xiaoheng Shao | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2026-03-16 | Zhenqing Zhang | Former Advisor | Initial Statement of Beneficial | 0 | -- |
| 2026-03-16 | Lifeng Chen | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2025-09-29 | Xiaoheng Shao | Independent Director | Intent to Sell (Form 144) | -1,000 | $10.80 |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 06:35:06 · For reference only, not investment advice and not tailored to your situation.