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 UPB 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/UPB"
Use Arkolith to show who owns UPB, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | NORGES BANK | $78.3M | 2.9M | ▲+197% Added · +1.9M sh | Q4 2025 | |
| 2 | FMR LLC | $72.9M | 8.1M | ▲+7.8% Added · +583K sh | Q1 2026 | |
| 3 | VANGUARD GROUP INC | $64.8M | 2.4M | ▼−2.2% Reduced · −54K sh | Q4 2025 | |
| 4 | ORBIMED ADVISORS LLC | $51.2M | 5.7M | —Held | Q1 2026 | |
| 5 | BlackRock, Inc. | $30.3M | 3.4M | ▲+0.8% Added · +26K sh | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $16.9M | 1.9M | ▲New +1.9M sh | Q1 2026 | |
| 7 | Y-Intercept (Hong Kong) Ltd | $9.0M | 1.0M | ▲21× Added · +954K sh | Q1 2026 | |
| 8 | FEDERATED HERMES, INC. | $8.8M | 980K | ▲2k× Added · +979K sh | Q1 2026 | |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | $8.6M | 951K | ▲+12% Added · +99K sh | Q1 2026 | |
| 10 | MILLENNIUM MANAGEMENT LLC | $8.4M | 937K | ▲+81% Added · +420K sh | Q1 2026 | |
| 11 | SEB Asset Management AB | $7.9M | 878K | ▲New +878K sh | Q1 2026 | |
| 12 | Bain Capital Life Sciences Investors, LLC | $7.8M | 867K | ▼−35% Reduced · −462K sh | Q1 2026 | |
| 13 | Woodline Partners LP | $7.5M | 831K | ▲+9.4% Added · +71K sh | Q1 2026 | |
| 14 | D. E. Shaw & Co., Inc. | $7.4M | 820K | ▲30× Added · +793K sh | Q1 2026 | |
| 15 | Pictet Asset Management Holding SA | $6.6M | 733K | ▼−5.1% Reduced · −40K sh | Q1 2026 | |
| 16 | VANGUARD PORTFOLIO MANAGEMENT LLC | $6.5M | 728K | ▲New +728K sh | Q1 2026 | |
| 17 | STATE STREET CORP | $6.3M | 705K | ▼−47% Reduced · −614K sh | Q1 2026 | |
| 18 | HSBC HOLDINGS PLC | $5.8M | 640K | ▲New +640K sh | Q1 2026 | |
| 19 | Qube Research & Technologies Ltd | $5.6M | 619K | ▲New +619K sh | Q1 2026 | |
| 20 | MORGAN STANLEY | $5.0M | 553K | ▲+353% Added · +431K sh | Q1 2026 | |
| 21 | JPMORGAN CHASE & CO | $4.1M | 463K | ▲+320% Added · +353K sh | Q1 2026 | |
| 22 | Nantahala Capital Management, LLC | $3.6M | 400K | ▼−19% Reduced · −95K sh | Q1 2026 | |
| 23 | Altshuler Shaham Ltd | $3.4M | 380K | ▼−72% Reduced · −961K sh | Q1 2026 | |
| 24 | Jump Financial, LLC | $2.9M | 319K | ▲New +319K sh | Q1 2026 | |
| 25 | GOLDMAN SACHS GROUP INC | $2.8M | 317K | ▼−5.1% Reduced · −17K 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 9, 2026 | Fleming Harold Edward | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Beckman Daniella | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Renaud Ronald C JR | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Ratcliffe Liam | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Ruddy Marcella K. | Director | Grant (A) | 17K | $0 |
| Jun 9, 2026 | Chimovits Erez | Director | Grant (A) | 17K | $0 |
| Mar 16, 2026 | Ambrose Allison | General Counsel | Sell (S) | 475 | $4K |
| Mar 16, 2026 | Sutherland Everett Rand | Chief Executive Officer, Director | Sell (S) | 2K | $19K |
| Mar 16, 2026 | Deykin Aaron | Chief Medical Officer | Sell (S) | 894 | $8K |
| Mar 16, 2026 | GRAY MICHAEL | CFO and COO | Sell (S) | 852 | $8K |
| Mar 16, 2026 | Houghton Adam | Chief Business Officer | Sell (S) | 699 | $6K |
| Jan 2, 2026 | Deykin Aaron | Chief Medical Officer | Grant (A) | 96K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| ELI LILLY & COLLY | 41 funds | $3.6B |
| BOSTON SCIENTIFIC CORPBSX | 41 funds | $1.4B |
| INTUITIVE SURGICAL INCISRG | 40 funds | $1.5B |
| NVIDIA CORPNVDA | 39 funds | $22.5B |
| MICROSOFT CORPMSFT | 39 funds | $13.7B |
| BROADCOM INCAVGO | 39 funds | $8.8B |
| META PLATFORMS INC-CLASS AMETA | 39 funds | $7.1B |
| MICRON TECHNOLOGY INCMU | 39 funds | $4.6B |
| UNITEDHEALTH GROUP INCUNH | 39 funds | $1.3B |
| GILEAD SCIENCES INCGILD | 39 funds | $1.0B |
| SERVICENOW INCNOW | 39 funds | $840.0M |
| AMAZON.COM INCAMZN | 38 funds | $10.7B |
Ranked by how many of UPB'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 UPB. 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.