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/BZUN/capital-change-brief"
Use Arkolith's capital_change_brief for BZUN. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | SCHRODER INVESTMENT MANAGEMENT GROUP | $5.8M | 2.4M | —Held | Q1 2026 | |
| 2 | TWO SIGMA INVESTMENTS, LP | $2.3M | 964K | ▲+804% Added · +857K sh | Q1 2026 | |
| 3 | DIMENSIONAL FUND ADVISORS LP | $1.4M | 594K | ▲+3.1% Added · +18K sh | Q1 2026 | |
| 4 | MARSHALL WACE, LLP | $1.3M | 548K | ▲+58% Added · +202K sh | Q1 2026 | |
| 5 | MORGAN STANLEY | $1.3M | 534K | ▼−8.4% Reduced · −49K sh | Q1 2026 | |
| 6 | First Beijing Investment Ltd | $1.1M | 444K | ▲New +444K sh | Q1 2026 | |
| 7 | AIA Group Ltd | $954K | 399K | —Held | Q1 2026 | |
| 8 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $905K | 379K | ▼−16% Reduced · −73K sh | Q1 2026 | |
| 9 | D. E. Shaw & Co., Inc. | $644K | 269K | ▲+97% Added · +133K sh | Q1 2026 | |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $521K | 218K | ▼−8.1% Reduced · −19K sh | Q1 2026 | |
| 11 | RENAISSANCE TECHNOLOGIES LLC | $468K | 196K | ▼−15% Reduced · −34K sh | Q1 2026 | |
| 12 | Qube Research & Technologies Ltd | $467K | 196K | ▲+11% Added · +20K sh | Q1 2026 | |
| 13 | JANE STREET GROUP, LLC | $451K | 189K | ▲+247% Added · +134K sh | Q1 2026 | |
| 14 | JPMORGAN CHASE & CO | $433K | 185K | ▲+1.0% Added · +2K sh | Q1 2026 | |
| 15 | UBS Group AG | $371K | 155K | ▼−29% Reduced · −63K sh | Q1 2026 | |
| 16 | Marex Group plc | $285K | 119K | ▼−8.8% Reduced · −12K sh | Q1 2026 | |
| 17 | XTX Topco Ltd | $269K | 113K | ▲+37% Added · +30K sh | Q1 2026 | |
| 18 | CITADEL ADVISORS LLC | $268K | 112K | ▲+16% Added · +16K sh | Q1 2026 | |
| 19 | SIMPLEX TRADING, LLC | $265K | 111K | ▲29× Added · +107K sh | Q1 2026 | |
| 20 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $221K | 93K | —Held | Q1 2026 | |
| 21 | MILLENNIUM MANAGEMENT LLC | $196K | 82K | ▼−43% Reduced · −62K sh | Q1 2026 | |
| 22 | GROUP ONE TRADING LLC | $178K | 75K | ▲+455% Added · +61K sh | Q1 2026 | |
| 23 | NANO CAP NEW MILLENNIUM GROWTH FUND L P | $120K | 50K | —Held | Q1 2026 | |
| 24 | BNP PARIBAS FINANCIAL MARKETS | $109K | 45K | ▲+8.9% Added · +4K sh | Q1 2026 | |
| 25 | Jump Financial, LLC | $108K | 45K | ▼−24% Reduced · −14K sh | 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.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 30, 2026 | Ye Changqing | Director | Option exercise (M) | 17K | $0 |
| Jun 30, 2026 | Ye Changqing | Director | Option exercise (M) | 52K | $0 |
| Jun 24, 2026 | Wu Junhua | Chief Strategy Officer, Director | Buy (P) | 29K | $83K |
| Jun 22, 2026 | Qiu Wenbin | Chief Executive Officer, Director | Buy (P) | 10K | $28K |
| Jun 18, 2026 | Qiu Wenbin | Chief Executive Officer, Director | Buy (P) | 10K | $28K |
| Jun 17, 2026 | Wu Junhua | Chief Strategy Officer, Director | Buy (P) | 19K | $53K |
| Jun 17, 2026 | Qiu Wenbin | Chief Executive Officer, Director | Buy (P) | 10K | $28K |
| Jun 16, 2026 | Qiu Wenbin | Chief Executive Officer, Director | Buy (P) | 10K | $27K |
| Jun 15, 2026 | Qiu Wenbin | Chief Executive Officer, Director | Buy (P) | 10K | $28K |
| Jun 12, 2026 | Qiu Wenbin | Chief Executive Officer, Director | Buy (P) | 10K | $27K |
| Jun 11, 2026 | Wu Junhua | Chief Strategy Officer, Director | Buy (P) | 18K | $48K |
| Jun 11, 2026 | Qiu Wenbin | Chief Executive Officer, Director | Buy (P) | 10K | $27K |
| Company | Co-held by | Combined value |
|---|---|---|
| SEA LTD-ADRSE | 20 funds | $388.3M |
| MICROSOFT CORPMSFT | 19 funds | $9.2B |
| AMAZON.COM INCAMZN | 19 funds | $8.3B |
| BROADCOM INCAVGO | 19 funds | $6.0B |
| MICRON TECHNOLOGY INCMU | 19 funds | $2.7B |
| VISA INC-CLASS A SHARESV | 19 funds | $2.7B |
| ELI LILLY & COLLY | 19 funds | $2.6B |
| COSTCO WHOLESALE CORPCOST | 19 funds | $2.2B |
| MASTERCARD INC - AMA | 19 funds | $1.7B |
| UNITEDHEALTH GROUP INCUNH | 19 funds | $1.6B |
| CHEVRON CORPCVX | 19 funds | $1.5B |
| CITIGROUP INCC | 19 funds | $1.5B |
Ranked by how many of BZUN's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for BZUN. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.