Filing Flows › 13F managers › Boston Partners
Boston Partners: 13F portfolio Q2 2026 and what copying it returned
Boston Partners' 13F for the quarter ended 2026-06-30 (filed Aug 4, 2026): 400 common-share positions, $112.6B reported. Copying each 13F the day after it was filed returned +28.9% from May 15, 2025 to Nov 6, 2026, against +25.1% for SPY.
Copying the 13F
Each 13F bought at the close of the first trading day after it was filed and held, drifting, until the next one; value-weighted over the common-share positions with a price (88.4% of the portfolio on average); 6 filings since May 13, 2025. Price returns for the clone and SPY alike (no dividends, no costs). A 13F lists only US long positions at quarter end, reported up to 45 days later.
Largest holdings (2026-06-30)
| Ticker | Company | Weight | Value | Change in the quarter |
|---|---|---|---|---|
| AMZN | Amazon.com | 2.7% | $3.1B | +136.0% |
| JPM | JPMorgan Chase | 2.1% | $2.4B | +4.4% |
| USFD | US Foods Holding | 1.7% | $1.9B | +13.5% |
| AMAT | Applied Materials | 1.7% | $1.9B | -3.4% |
| COR | Cencora | 1.2% | $1.4B | +8.6% |
| MU | Micron Technology | 1.2% | $1.4B | -57.1% |
| DELL | Dell Technologies | 1.2% | $1.4B | -16.3% |
| MCHP | Microchip Technology | 1.2% | $1.3B | -1.5% |
| LPLA | LPL Financial Holdings | 1.1% | $1.2B | +2.9% |
| ABBV | AbbVie | 1.1% | $1.2B | +39.3% |
| PM | Philip Morris International | 1.0% | $1.1B | +5.5% |
| FANG | Diamondback Energy | 0.9% | $1.0B | +1.4% |
| DIS | Walt Disney | 0.9% | $1.0B | +25.2% |
| META | Meta Platforms | 0.9% | $1.0B | +19.9% |
| URI | United Rentals | 0.9% | $1.0B | -1.5% |
| DGX | Quest Diagnostics | 0.9% | $1.0B | +18.3% |
| COP | ConocoPhillips | 0.9% | $992M | +40.5% |
| MS | Morgan Stanley | 0.9% | $985M | +5.8% |
| GS | Goldman Sachs Group | 0.9% | $965M | +3.9% |
| CPAY | Corpay | 0.8% | $939M | +16.1% |
| HBAN | Huntington Bancshares | 0.8% | $937M | +5.4% |
| MPC | Marathon Petroleum | 0.8% | $906M | -37.8% |
Biggest adds
- TPR new
- HON new
- HONA new
- SPGI new
- WHD new
- SIRI new
- CHE new
- GMED new
- MRSH new
- LNG new
- DCI new
- DD new
Biggest cuts
- CPRT exit
- MBC exit
- AGG exit
- PFSI exit
- OII exit
- NATL exit
- ASH exit
- PRMB exit
- HBM exit
Track record
Of 338 position changes scored in 338 separate decisions, 49.7% were on the right side of SPY over the next three months (Disclosures → Smart money).
Open in Disclosures → every quarter, the clone month by month, the smart-money record
Source: SEC Form 13F-HR, filer CIK 1386060. Not investment advice.