The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query AMBA owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/AMBA"
Use Arkolith to show who owns AMBA, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD PORTFOLIO MANAGEMENT LLC | $191.3M | 3.7M | ▲New +3.7M sh | Q1 2026 | |
| 2 | STATE STREET CORP | $101.7M | 2.0M | ▲+16% Added · +274K sh | Q1 2026 | |
| 3 | CITADEL ADVISORS LLC | $48.0M | 932K | ▲+74% Added · +396K sh | Q1 2026 | |
| 4 | Connor, Clark & Lunn Investment Management Ltd. | $30.9M | 601K | ▲+7.8% Added · +43K sh | Q1 2026 | |
| 5 | EXCHANGE TRADED CONCEPTS, LLC | $29.4M | 572K | ▲+62% Added · +218K sh | Q1 2026 | |
| 6 | Point72 Asset Management, L.P. | $26.8M | 521K | ▼−32% Reduced · −251K sh | Q1 2026 | |
| 7 | Stephens Investment Management Group LLC | $24.5M | 475K | ▼−0.4% Reduced · −2K sh | Q1 2026 | |
| 8 | PINNACLE ASSOCIATES LTD | $22.1M | 430K | ▲+20% Added · +71K sh | Q1 2026 | |
| 9 | JACOBS LEVY EQUITY MANAGEMENT, INC | $18.8M | 364K | ▲+14% Added · +46K sh | Q1 2026 | |
| 10 | Woodline Partners LP | $18.0M | 349K | ▲New +349K sh | Q1 2026 | |
| 11 | OBERWEIS ASSET MANAGEMENT INC/ | $15.2M | 295K | ▼−52% Reduced · −323K sh | Q1 2026 | |
| 12 | VANGUARD FIDUCIARY TRUST CO | $14.6M | 284K | ▲New +284K sh | Q1 2026 | |
| 13 | HAWK RIDGE CAPITAL MANAGEMENT LP | $14.2M | 276K | ▲New +276K sh | Q1 2026 | |
| 14 | Walleye Capital LLC | $10.9M | 211K | ▲23× Added · +202K sh | Q1 2026 | |
| 15 | MAIRS & POWER INC | $6.1M | 118K | ▲New +118K sh | Q1 2026 | |
| 16 | Portolan Capital Management, LLC | $5.6M | 109K | ▲+100% Added · +55K sh | Q1 2026 | |
| 17 | Robeco Schweiz AG | $5.4M | 104K | ▼−36% Reduced · −58K sh | Q1 2026 | |
| 18 | Engineers Gate Manager LP | $4.8M | 94K | ▼−25% Reduced · −31K sh | Q1 2026 | |
| 19 | ArrowMark Colorado Holdings LLC | $4.6M | 89K | ▲+62% Added · +34K sh | Q1 2026 | |
| 20 | PANAGORA ASSET MANAGEMENT INC | $4.5M | 87K | ▲New +87K sh | Q1 2026 | |
| 21 | Trexquant Investment LP | $2.5M | 49K | ▼−66% Reduced · −96K sh | Q1 2026 | |
| 22 | Y-Intercept (Hong Kong) Ltd | $2.2M | 43K | ▲+0.6% Added · +264 sh | Q1 2026 | |
| 23 | Holocene Advisors, LP | $1.8M | 35K | ▲New +35K sh | Q1 2026 | |
| 24 | OCCUDO QUANTITATIVE STRATEGIES LP | $1.7M | 25K | ▲+442% Added · +21K sh | Q1 2026 | |
| 25 | IEQ CAPITAL, LLC | $1.7M | 32K | ▲+186% Added · +21K 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 17, 2026 | Young John Alexander | CFO | Sell (S) | 2K | $124K |
| Jun 17, 2026 | Lee Chan W | Chief Operations Officer | Sell (S) | 3K | $200K |
| Jun 17, 2026 | Ju Chi-Hong | Senior VP, Systems & GM | Sell (S) | 2K | $137K |
| Jun 17, 2026 | Young John Alexander | CFO | Sell (S) | 3K | $216K |
| Jun 17, 2026 | Wang Feng-Ming | CEO, Director | Sell (S) | 6K | $421K |
| Jun 17, 2026 | Wang Feng-Ming | CEO, Director | Gift (G) | 10K | $0 |
| Jun 12, 2026 | Chen Yun-Lung | VP, Business Development and | Sell (S) | 10K | $661K |
| Mar 19, 2026 | Lee Chan W | Chief Operations Officer | Sell (S) | 4K | $197K |
| Mar 19, 2026 | Ju Chi-Hong | Senior VP, Systems & GM, Asia | Sell (S) | 2K | $117K |
| Mar 19, 2026 | Young John Alexander | CFO | Sell (S) | 3K | $164K |
| Mar 19, 2026 | Wang Feng-Ming | CEO, Director | Sell (S) | 8K | $438K |
| Mar 18, 2026 | Young John Alexander | CFO | Grant (A) | 6K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 108 funds | $44.5B |
| META PLATFORMS INC-CLASS AMETA | 107 funds | $21.2B |
| ALPHABET INC-CL AGOOGL | 106 funds | $29.2B |
| NVIDIA CORPNVDA | 105 funds | $66.6B |
| AMAZON.COM INCAMZN | 104 funds | $36.8B |
| APPLE INCAAPL | 103 funds | $51.6B |
| ELI LILLY & COLLY | 103 funds | $11.5B |
| BROADCOM INCAVGO | 102 funds | $23.7B |
| TESLA INCTSLA | 102 funds | $15.1B |
| JPMORGAN CHASE & COJPM | 101 funds | $13.7B |
| MICRON TECHNOLOGY INCMU | 101 funds | $9.3B |
| COSTCO WHOLESALE CORPCOST | 101 funds | $7.4B |
Ranked by how many of AMBA'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 AMBA. 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.