Among active 13F managers last quarter, 1 opened and 2 added, while none reduced or exited; the largest holder to move was Renaissance Technologies LLC (+2.4%). Over the last 180 days, 3 insiders sold and none bought, a net -$301K in open-market trades.
The legs disagree, or only one of them leans.
9 tracked 13F filers disclose a position in YI as of the latest SEC 13F filings, a combined $523K in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Citadel Advisors LLC | 17K | $75K | ▲New +17K sh | Q2 2026 | |
| 2 | Renaissance Technologies LLC | 13K | $85K | ▲+2.4% Added · +300 sh | Q1 2026 | |
| 3 | Serenus Wealth Advisors, LLC | 4K | $359K | —Held | Q2 2026 | |
| 4 | Citigroup Inc | 207 | $1K | ▲New +207 sh | Q1 2026 | |
| 5 | SBI Securities Co., Ltd. | 149 | $647 | ▲+3.5% Added · +5 sh | Q2 2026 | |
| 6 | Morgan Stanley | 113 | $737 | ▼−19% Reduced · −27 sh | Q1 2026 | |
| 7 | UBS Group AG | 100 | $652 | ▼−67% Reduced · −203 sh | Q1 2026 | |
| 8 | JPMorgan Chase & Co | 52 | $334 | ▲+24% Added · +10 sh | Q1 2026 | |
| 9 | Rhumbline Advisers | 22 | $142 | —Held | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 1 fund opened a new position in YI and 2 added to an existing one, while none reduced or exited. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Nvidia CorpNVDA | 3 funds | $3.3B |
| Apple IncAAPL | 3 funds | $3.0B |
| Micron Technology IncMU | 3 funds | $1.6B |
| Microsoft CorpMSFT | 3 funds | $1.5B |
| Broadcom IncAVGO | 3 funds | $1.4B |
| Alphabet Inc-CL AGOOGL | 3 funds | $1.3B |
| Palantir Technologies Inc-APLTR | 3 funds | $1.3B |
| Warner Bros Discovery IncWBD | 3 funds | $1.3B |
| United Therapeutics CorpUTHR | 3 funds | $1.2B |
| Eli Lilly & CoLLY | 3 funds | $1.2B |
| Alphabet Inc-CL CGOOG | 3 funds | $1.0B |
| Advanced Micro DevicesAMD | 3 funds | $1.0B |
Ranked by how many of YI's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in YI.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 15, 2026 | Sun Jian David | Director | Sell (S) | 59K | $14K |
| Jun 15, 2026 | Chen Yang Luke | Director | Sell (S) | 44K | $10K |
| Jun 12, 2026 | Chen Yang Luke | Director | Sell (S) | 50K | $11K |
| Jun 11, 2026 | Sun Jian David | Director | Sell (S) 2 lots, same day | 222K | $51K |
| Jun 10, 2026 | Sun Jian David | Director | Sell (S) 3 lots, same day | 346K | $76K |
| Jun 9, 2026 | Sun Jian David | Director | Sell (S) 3 lots, same day | 36K | $8K |
| May 27, 2026 | Sun Jian David | Director | Sell (S) 4 lots, same day | 282K | $70K |
| May 27, 2026 | Chen Yang Luke | Director | Sell (S) 2 lots, same day | 7K | $2K |
| May 27, 2026 | Luo Jun Justin | Director | Sell (S) | 70K | $18K |
| May 26, 2026 | Sun Jian David | Director | Sell (S) 4 lots, same day | 117K | $32K |
| May 26, 2026 | Chen Yang Luke | Director | Sell (S) 2 lots, same day | 3K | $778 |
| May 26, 2026 | Luo Jun Justin | Director | Sell (S) | 29K | $8K |
One row per insider, day and transaction code; shares and value are summed across the lots. Every lot is on the full insider page and in the filing.
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 3 | 2 | – |
Insiders Form 4 open-market | 0 | 3 | -$301K |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
Connected entities for YI
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/YI/capital-change-brief"
Use Arkolith's capital_change_brief for YI. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for YI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.