Marshall Wace 13F holdings
The latest 13F-HR filed by Marshall Wace covers the period ending 2026-06-30, with 2,748 reported positions. The largest positions by reported value are below, as filed.
Portfolio shape
Marshall Wace's largest reported position at June 30, 2026 was ISHARES-S&P 500 at 23.6% of the $127B it reported, followed by SPDR PORTFOLIO L (3.3%).
The 10 largest positions shown make up 38.5% of reported value across 2,748 positions, so the rest of the portfolio holds 61.5%.
| # | Issuer | Class | CUSIP | Value | Shares | Weight |
|---|---|---|---|---|---|---|
| 1 | ISHARES-S&P 500 | EQUITY OPTION | 464287200 | $29,961,984,288 | 40,008,525 | 23.6% |
| 2 | SPDR PORTFOLIO L | ETP | 78464A854 | $4,118,876,193 | 46,869,324 | 3.3% |
| 3 | APPLE INC | COMMON STOCK | 037833100 | $2,747,437,632 | 9,494,903 | 2.2% |
| 4 | ADV MICRO DEVICE | COMMON STOCK | 007903107 | $2,406,475,026 | 4,142,810 | 1.9% |
| 5 | AMAZON.COM INC | COMMON STOCK | 023135106 | $2,311,135,582 | 9,696,751 | 1.8% |
| 6 | NVIDIA CORP | COMMON STOCK | 67066G104 | $1,823,303,633 | 9,113,159 | 1.4% |
| 7 | MICRON TECH | COMMON STOCK | 595112103 | $1,781,199,022 | 1,543,118 | 1.4% |
| 8 | MICROSOFT CORP | COMMON STOCK | 594918104 | $1,534,093,617 | 4,112,631 | 1.2% |
| 9 | COSTCO WHOLESALE | COMMON STOCK | 22160K105 | $1,098,958,352 | 1,174,766 | 0.9% |
| 10 | TAIWAN SEMIC-ADR | ADR | 874039100 | $1,055,179,456 | 2,209,476 | 0.8% |
What Marshall Wace bought, added, trimmed and exited
The free view above is the top of one quarter's filing. The paid report diffs the two most recent 13F filings, so you see new positions, adds, trims and exits with the size of each move, a cited write-up, and the full holdings plus changes table to download.
Generated from public SEC EDGAR filings. Filing data is shown as filed. This is information, not investment advice.