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 PSO 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/PSO"
Use Arkolith to show who owns PSO, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | MORGAN STANLEY | $52.5M | 4.0M | ▲+0.7% Added · +27K sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $35.2M | 2.7M | ▲+8.2% Added · +203K sh | Q1 2026 | |
| 3 | GOLDMAN SACHS GROUP INC | $31.7M | 2.4M | ▲+7.2% Added · +161K sh | Q1 2026 | |
| 4 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $21.6M | 1.6M | ▲+72% Added · +691K sh | Q1 2026 | |
| 5 | LMR Partners LLP | $18.0M | 1.4M | ▲+70% Added · +567K sh | Q1 2026 | |
| 6 | DIMENSIONAL FUND ADVISORS LP | $13.3M | 1.0M | ▼~0% Reduced · −370 sh | Q1 2026 | |
| 7 | D. E. Shaw & Co., Inc. | $10.9M | 829K | ▲+164% Added · +515K sh | Q1 2026 | |
| 8 | NORTHERN TRUST CORP | $10.4M | 794K | ▲+7.5% Added · +56K sh | Q1 2026 | |
| 9 | Optiver Holding B.V. | $8.1M | 615K | ▼−22% Reduced · −172K sh | Q1 2026 | |
| 10 | ALLIANCEBERNSTEIN L.P. | $7.6M | 544K | ▲+0.1% Added · +765 sh | Q1 2026 | |
| 11 | BNP PARIBAS FINANCIAL MARKETS | $6.9M | 527K | ▲+0.6% Added · +3K sh | Q1 2026 | |
| 12 | Quantinno Capital Management LP | $6.7M | 513K | ▲+17% Added · +74K sh | Q1 2026 | |
| 13 | JANE STREET GROUP, LLC | $6.4M | 484K | ▲+185% Added · +315K sh | Q1 2026 | |
| 14 | FMR LLC | $5.7M | 434K | ▲+18% Added · +66K sh | Q1 2026 | |
| 15 | RENAISSANCE GROUP LLC | $4.9M | 370K | ▼−1.6% Reduced · −6K sh | Q1 2026 | |
| 16 | Connor, Clark & Lunn Investment Management Ltd. | $4.5M | 342K | ▲New +342K sh | Q1 2026 | |
| 17 | Point72 Asset Management, L.P. | $4.1M | 309K | ▲+22% Added · +56K sh | Q1 2026 | |
| 18 | Creative Planning | $3.5M | 266K | ▲+41% Added · +77K sh | Q1 2026 | |
| 19 | QRG CAPITAL MANAGEMENT, INC. | $2.3M | 178K | ▲+13% Added · +21K sh | Q1 2026 | |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $2.3M | 175K | ▼−11% Reduced · −21K sh | Q1 2026 | |
| 21 | BANK OF MONTREAL /CAN/ | $2.3M | 173K | ▼−22% Reduced · −48K sh | Q1 2026 | |
| 22 | Aquatic Capital Management LLC | $2.1M | 161K | ▲+491% Added · +134K sh | Q1 2026 | |
| 23 | Tower Research Capital LLC (TRC) | $2.0M | 153K | ▼−1.6% Reduced · −2K sh | Q1 2026 | |
| 24 | Mariner, LLC | $1.9M | 142K | ▼−2.5% Reduced · −4K sh | Q1 2026 | |
| 25 | Campbell & CO Investment Adviser LLC | $1.9M | 142K | ▲+110% Added · +74K 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.
No Form 4 insider transactions on file yet.
| Company | Co-held by | Combined value |
|---|---|---|
| NVIDIA CORPNVDA | 66 funds | $24.4B |
| MICROSOFT CORPMSFT | 66 funds | $17.4B |
| BROADCOM INCAVGO | 66 funds | $9.7B |
| META PLATFORMS INC-CLASS AMETA | 66 funds | $8.3B |
| VISA INC-CLASS A SHARESV | 66 funds | $4.1B |
| COSTCO WHOLESALE CORPCOST | 66 funds | $4.0B |
| MASTERCARD INC - AMA | 66 funds | $3.6B |
| NETFLIX INCNFLX | 66 funds | $2.6B |
| LAM RESEARCH CORPLRCX | 66 funds | $2.0B |
| LINDE PLCLIN | 66 funds | $1.4B |
| UBER TECHNOLOGIES INCUBER | 66 funds | $1.1B |
| CARDINAL HEALTH INCCAH | 66 funds | $952.7M |
Ranked by how many of PSO's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PSO. 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.