Boston Partners holds a diversified book of 767 stocks worth $95.5B as of Q1 2026 (disclosed May 11, 2026, a ~45-day 13F lag). This quarter they opened Marvell Technology Inc and trimmed JPMorgan Chase & Co. Their largest long position is JPMorgan Chase & Co at 2% of the equity book.
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 fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1386060/holdings"
Use Arkolith to show Boston Partners's latest holdings, largest changes, and filing provenance.
Top-heavy: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
99% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | JPMorgan Chase & Co COM | $2.1B | 7.05M | 2.2% | ▼−2.5% Reduced · −179K sh | |
| 2 | US Foods Hldg Corp COM | $1.5B | 16.39M | 1.6% | ▲+1.2% Added · +191K sh | |
| 3 | Cencora Inc COM | $1.4B | 4.48M | 1.5% | ▲+6.8% Added · +286K sh | |
| 4 | Marathon Pete Corp COM | $1.4B | 5.65M | 1.4% | ▼−7.7% Reduced · −471K sh | |
| 5 | LPL Finl Hldgs Inc COM | $1.2B | 4.13M | 1.3% | ▲+16% Added · +581K sh | |
| 6 | Diamondback Energy Inc COM | $1.1B | 5.77M | 1.2% | ▲+3.4% Added · +190K sh | |
| 7 | Amazon Com Inc COM | $1.1B | 5.45M | 1.2% | ▲+9.9% Added · +493K sh | |
| 8 | Kinross Gold Corp COM | $1.1B | 34.85M | 1.2% | ▼−8.4% Reduced · −3.2M sh | |
| 9 | McKesson Corp COM | $1.0B | 1.16M | 1.0% | ▼−6.1% Reduced · −75K sh | |
| 10 | Microchip Technology Inc. COM | $953.4M | 14.75M | 1.0% | ▼−3.0% Reduced · −461K sh | |
| 11 | Philip Morris Intl Inc COM | $953.2M | 5.78M | 1.0% | ▼−8.6% Reduced · −543K sh | |
| 12 | Micron Technology Inc COM | $951.4M | 2.80M | 1.0% | ▼−21% Reduced · −727K sh | |
| 13 | CRH PLC ORD | $946.3M | 9.00M | 1.0% | ▲+2.9% Added · +253K sh | |
| 14 | Applied Matls Inc COM | $933.6M | 2.73M | 1.0% | ▼−1.6% Reduced · −46K sh | |
| 15 | Firstenergy Corp COM | $892.8M | 17.61M | 0.9% | ▼−1.0% Reduced · −174K sh | |
| 16 | ConocoPhillips COM | $892.7M | 6.77M | 0.9% | ▲+2.5% Added · +163K sh | |
| 17 | Meta Platforms Inc CL A | $855.8M | 1.50M | 0.9% | ▲+34% Added · +382K sh | |
| 18 | Flextronics Intl Ltd ORD | $851.9M | 12.99M | 0.9% | ▲+7.3% Added · +889K sh | |
| 19 | Wells Fargo & Co COM | $835.0M | 10.48M | 0.9% | ▲+9.1% Added · +876K sh | |
| 20 | Disney Walt Co COM | $815.7M | 8.46M | 0.9% | ▲+4.7% Added · +378K sh | |
| 21 | Keysight Technologies Inc COM | $794.1M | 2.81M | 0.8% | ▼−30% Reduced · −1.2M sh | |
| 22 | Quest Diagnostics Inc COM | $786.7M | 4.01M | 0.8% | ▲+2.5% Added · +99K sh | |
| 23 | Huntington Bancshares Inc COM | $785.1M | 50.15M | 0.8% | ▼−15% Reduced · −8.7M sh | |
| 24 | L3harris Technologies Inc COM | $782.9M | 2.27M | 0.8% | ▼−5.7% Reduced · −137K sh | |
| 25 | Old Dominion Freight Line In COM | $780.3M | 3.99M | 0.8% | ▼−3.2% Reduced · −131K sh | |
| 26 | Goldman Sachs Group Inc COM | $773.5M | 913.5K | 0.8% | ▲+3.6% Added · +32K sh | |
| 27 | Sysco Corp COM | $754.9M | 10.58M | 0.8% | ▼−1.4% Reduced · −149K sh | |
| 28 | Abbvie Inc COM | $746.1M | 3.43M | 0.8% | ▲+1.0% Added · +34K sh | |
| 29 | Uber Technologies Inc COM | $738.2M | 10.26M | 0.8% | ▲+13% Added · +1.2M sh | |
| 30 | Morgan Stanley COM NEW | $729.3M | 4.43M | 0.8% | ▲+16% Added · +622K sh | |
| 31 | Tenet Healthcare Corp COM NEW | $723.7M | 3.83M | 0.8% | ▲+5.3% Added · +193K sh | |
| 32 | Iqvia Hldgs Inc COM | $723.3M | 4.24M | 0.8% | ▲+3.7% Added · +152K sh | |
| 33 | Honeywell Intl Inc COM | $718.8M | 3.18M | 0.8% | ▼−6.6% Reduced · −225K sh | |
| 34 | Corpay Inc COM SHS | $704.6M | 2.42M | 0.7% | ▲+32% Added · +584K sh | |
| 35 | Fedex Corp COM | $704.0M | 1.97M | 0.7% | ▼−3.2% Reduced · −66K sh | |
| 36 | SLB Limited COM STK | $689.2M | 13.43M | 0.7% | ▲+60% Added · +5.0M sh | |
| 37 | Entergy Corp New COM | $688.6M | 6.12M | 0.7% | ▼−8.0% Reduced · −535K sh | |
| 38 | United Rentals Inc COM | $666.8M | 915.0K | 0.7% | ▲+18% Added · +141K sh | |
| 39 | Allegion PLC ORD SHS | $645.7M | 4.45M | 0.7% | ▼−3.6% Reduced · −166K sh | |
| 40 | Reliance Inc COM | $641.7M | 2.11M | 0.7% | ▼−3.5% Reduced · −77K sh | |
| 41 | Labcorp Holdings Inc COM SHS | $632.4M | 2.37M | 0.7% | ▲+24% Added · +455K sh | |
| 42 | Aon PLC SHS CL A | $631.1M | 1.96M | 0.7% | ▲+20% Added · +320K sh | |
| 43 | Dell Technologies Inc CL C | $624.5M | 3.79M | 0.7% | ▼−19% Reduced · −863K sh | |
| 44 | American Express Co COM | $621.7M | 2.06M | 0.7% | ▼−1.3% Reduced · −27K sh | |
| 45 | NXP Semiconductors N V COM | $617.9M | 3.14M | 0.6% | ▲+10% Added · +295K sh | |
| 46 | Marvell Technology Inc COM | $612.6M | 6.17M | 0.6% | ▲New New position | |
| 47 | Gilead Sciences Inc COM | $593.1M | 4.26M | 0.6% | ▲+0.8% Added · +35K sh | |
| 48 | Booking Holdings Inc COM | $575.0M | 278.0K | 0.6% | ▲+189% Added · +182K sh | |
| 49 | Cummins Inc COM | $573.6M | 1.06M | 0.6% | ▼−3.2% Reduced · −36K sh | |
| 50 | Technipfmc PLC COM | $572.7M | 8.28M | 0.6% | ▼−15% Reduced · −1.5M sh |
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 11, 2026 | 1,772 | $95.5B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 13, 2026 | 1,747 | $96.6B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 13, 2025 | 1,840 | $97.4B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 12, 2025 | 1,708 | $90.0B | 13F-HR/A |
| Q1 2025 | Mar 31, 2025 | May 13, 2025 | 1,694 | $82.7B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 11, 2025 | 1,704 | $82.2B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 12, 2024 | 1,745 | $84.7B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 14, 2024 | 1,825 | $80.5B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 28, 2024 | 1,879 | $84.0B | 13F-HR/A |
| Q4 2023 | Dec 31, 2023 | Feb 7, 2024 | 1,835 | $75.5B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 8, 2023 | 1,804 | $72.2B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 10, 2023 | 1,759 | $74.3B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 9, 2023 | 1,727 | $72.7B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 8, 2023 | 1,708 | $73.9B | 13F-HR |
| Q3 2022 | Sep 30, 2022 | Nov 9, 2022 | 1,777 | $68.3B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 10, 2022 | 1,752 | $71.6B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 10, 2022 | 1,771 | $82.5B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 4, 2022 | 1,737 | $83.0B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Nov 5, 2021 | 1,721 | $78.9B | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Aug 12, 2021 | 1,702 | $78.4B | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 10, 2021 | 1,704 | $74.6B | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 10, 2021 | 1,624 | $64.3B | 13F-HR/A |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.