Filing Flows › 13F managers › Marshall Wace, LLP
Marshall Wace, LLP: 13F portfolio Q2 2026 and what copying it returned
Marshall Wace, LLP's 13F for the quarter ended 2026-06-30 (filed Aug 13, 2026): 400 common-share positions, $126.7B reported. Copying each 13F the day after it was filed returned +21.3% from May 19, 2025 to Nov 6, 2026, against +23.7% 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 (94.2% of the portfolio on average); 6 filings since May 15, 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 |
|---|---|---|---|---|
| IVV | iShares Core S&P 500 ETF | 23.5% | $29.8B | +51.5% |
| SPYM | STE STR SPDR PT S&P 500 ETF | 3.2% | $4.1B | -5.6% |
| AAPL | Apple | 2.1% | $2.6B | +8.4% |
| AMZN | Amazon.com | 1.8% | $2.3B | +7.5% |
| AMD | Advanced Micro Devices | 1.8% | $2.3B | +2.8% |
| NVDA | NVIDIA | 1.4% | $1.7B | -36.8% |
| MU | Micron Technology | 1.2% | $1.6B | +49.6% |
| MSFT | Microsoft | 1.0% | $1.2B | unchanged |
| COST | Costco Wholesale | 0.9% | $1.1B | +345.3% |
| MS | Morgan Stanley | 0.8% | $972M | +10.8% |
| TSLA | Tesla | 0.7% | $920M | +4.8% |
| TSM | Taiwan Semiconductor Manufacturing | 0.7% | $865M | -19.2% |
| GOOGL | Alphabet | 0.6% | $790M | -30.2% |
| HLT | Hilton Worldwide Holdings | 0.6% | $766M | unchanged |
| UNH | UnitedHealth Group | 0.6% | $762M | +30.0% |
| JNJ | Johnson & Johnson | 0.6% | $759M | +25.7% |
| ABBV | AbbVie | 0.6% | $753M | +281757.9% |
| BAC | Bank of America | 0.6% | $711M | +581.8% |
| KO | Coca Cola | 0.5% | $670M | +47.3% |
| JPM | JPMorgan Chase | 0.5% | $647M | +11481.2% |
| ABT | Abbott Laboratories | 0.4% | $503M | +175.6% |
| META | Meta Platforms | 0.4% | $502M | -7.9% |
| CME | CME Group | 0.4% | $495M | +178.7% |
| BE | Bloom Energy | 0.4% | $490M | +56.9% |
| AXP | American Express | 0.4% | $483M | +1033.9% |
Biggest adds
- LPLA new
- HUM new
- RSG new
- WING new
- RSP new
- BLK new
- RJF new
- COR new
- TRGP new
- CPNG new
Biggest cuts
- MRK exit
- SRE exit
- PODD exit
- RKLB exit
- KMB exit
- XLB exit
- JBL exit
- CHWY exit
- WMB exit
- CE exit
- HEI exit
Track record
Of 624 position changes scored in 624 separate decisions, 51.1% 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 1318757. Not investment advice.