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 ONON 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/ONON"
Use Arkolith to show who owns ONON, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Ilex Capital Partners (UK) LLP | $224.1M | 6.6M | ▲New +6.6M sh | Q1 2026 | |
| 2 | SANDS CAPITAL MANAGEMENT, LLC | $215.2M | 6.3M | ▼−4.7% Reduced · −310K sh | Q1 2026 | |
| 3 | CITADEL ADVISORS LLC | $130.9M | 3.8M | ▲+25% Added · +769K sh | Q1 2026 | |
| 4 | STATE STREET CORP | $86.0M | 2.5M | ▲+4.2% Added · +102K sh | Q1 2026 | |
| 5 | Holocene Advisors, LP | $71.9M | 2.1M | ▼−12% Reduced · −286K sh | Q1 2026 | |
| 6 | Fiera Capital Corp | $31.9M | 938K | ▲+1.9% Added · +17K sh | Q1 2026 | |
| 7 | Zurcher Kantonalbank (Zurich Cantonalbank) | $29.7M | 872K | ▲+4.7% Added · +39K sh | Q1 2026 | |
| 8 | Alyeska Investment Group, L.P. | $23.8M | 700K | ▲New +700K sh | Q1 2026 | |
| 9 | Impax Asset Management Group plc | $22.9M | 672K | ▲+629% Added · +580K sh | Q1 2026 | |
| 10 | OSSIAM | $22.8M | 672K | ▲+108% Added · +348K sh | Q1 2026 | |
| 11 | Bridgewater Associates, LP | $20.8M | 610K | ▲10× Added · +552K sh | Q1 2026 | |
| 12 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | $20.0M | 589K | ▼−19% Reduced · −140K sh | Q1 2026 | |
| 13 | GATES FOUNDATION TRUST | $17.0M | 500K | —Held | Q1 2026 | |
| 14 | TUDOR INVESTMENT CORP ET AL | $16.2M | 475K | ▲28× Added · +458K sh | Q1 2026 | |
| 15 | VANGUARD PORTFOLIO MANAGEMENT LLC | $16.1M | 474K | ▲New +474K sh | Q1 2026 | |
| 16 | Junto Capital Management LP | $16.0M | 470K | ▼−44% Reduced · −362K sh | Q1 2026 | |
| 17 | Woodline Partners LP | $14.0M | 413K | ▼−20% Reduced · −104K sh | Q1 2026 | |
| 18 | ZEVENBERGEN CAPITAL INVESTMENTS LLC | $13.7M | 403K | ▼−16% Reduced · −80K sh | Q1 2026 | |
| 19 | &PARTNERS | $13.1M | 386K | ▲+9.2% Added · +33K sh | Q1 2026 | |
| 20 | Point72 Asset Management, L.P. | $12.4M | 364K | ▲Added Added · +364K sh | Q1 2026 | |
| 21 | Baltimore-Washington Financial Advisors, Inc. | $11.8M | 346K | ▲+2.7% Added · +9K sh | Q1 2026 | |
| 22 | Eurizon Capital SGR S.p.A. | $11.1M | 326K | ▲New +326K sh | Q1 2026 | |
| 23 | Verition Fund Management LLC | $10.9M | 321K | ▲+22% Added · +59K sh | Q1 2026 | |
| 24 | PEREGRINE CAPITAL MANAGEMENT LLC | $10.1M | 297K | ▲+5.9% Added · +16K sh | Q1 2026 | |
| 25 | AVIVA PLC | $9.5M | 280K | ▼−3.2% Reduced · −9K 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 8, 2026 | Maguire Scott Andrew | COO | Sell (S) | 2K | $55K |
| Jun 5, 2026 | Maguire Scott Andrew | COO | Option exercise (M) | 2K | $0 |
| Jun 5, 2026 | Maguire Scott Andrew | COO | Option exercise (M) | 2K | $0 |
| Jun 5, 2026 | Maguire Scott Andrew | COO | Option exercise (M) | 4K | $0 |
| Jun 5, 2026 | Maguire Scott Andrew | COO | Option exercise (M) | 521 | $0 |
| Mar 30, 2026 | Hoffmann Martin | CEO | Sell (S) | 4K | $134K |
| Mar 27, 2026 | Hoffmann Martin | CEO | Option exercise (M) | 13K | $409K |
| Mar 27, 2026 | Hoffmann Martin | CEO | Option exercise (M) | 13K | $0 |
| Mar 27, 2026 | Hoffmann Martin | CEO | Option exercise (M) | 11K | $370K |
| Mar 27, 2026 | Hoffmann Martin | CEO | Option exercise (M) | 11K | $0 |
| Mar 26, 2026 | Miele Laura | Director | Tax withholding (F) | 423 | $15K |
| Mar 26, 2026 | Helmersson Helena | Director | Tax withholding (F) | 440 | $15K |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 173 funds | $63.4B |
| META PLATFORMS INC-CLASS AMETA | 172 funds | $27.3B |
| ALPHABET INC-CL AGOOGL | 171 funds | $43.2B |
| NVIDIA CORPNVDA | 170 funds | $83.6B |
| AMAZON.COM INCAMZN | 169 funds | $51.2B |
| ELI LILLY & COLLY | 169 funds | $16.2B |
| APPLE INCAAPL | 167 funds | $67.4B |
| BROADCOM INCAVGO | 167 funds | $31.6B |
| VISA INC-CLASS A SHARESV | 166 funds | $14.8B |
| SERVICENOW INCNOW | 166 funds | $4.9B |
| TESLA INCTSLA | 165 funds | $16.8B |
| MASTERCARD INC - AMA | 164 funds | $13.2B |
Ranked by how many of ONON'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 ONON. 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.