Who owns 111, Inc.?
Institutional ownership of YI from SEC Form 13F filings across 7 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
7
13F holders
$442,307
value, 2026 filers
0.3%
of shares outstanding (23,587 sh)
1
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of YI's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLCNEW | 17,339 | $75,251 | 0.0% | 0.2% | new |
| 2 | Serenus Wealth Advisors, LLC | 4,320 | $358,699 | 0.1% | 0% | 0.0% |
| 3 | UBS Group AG | 1,597 | $6,931 | 0.0% | 0% | +1497.0% |
| 4 | SBI Securities Co., Ltd. | 149 | $647 | 0.0% | 0% | +3.5% |
| 5 | MORGAN STANLEY | 113 | $490 | 0.0% | 0% | 0.0% |
| 6 | JPMORGAN CHASE & CO | 47 | $194 | 0.0% | 0% | -9.6% |
| 7 | RHUMBLINE ADVISERS | 22 | $95 | 0.0% | 0% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.