Marshall Wace LLP 13F, Q2 2026
Marshall Wace · quarter ending 30 June 2026 · filed 13 August 2026 · SEC CIK 1318757
Common stock only: shares the fund reported owning at the quarter end, valued as filed. The filing also lists 384 put and call lines, reported at the value of the underlying shares; they are not ownership and are not in these totals.
Largest positions, Q2 2026
The 25 largest of 2,719 positions. Weights are against the whole filed book. Changes are in shares held, against the Q1 2026 filing.
| Company | Ticker | Value | % of book | vs Q1 2026 |
|---|---|---|---|---|
| ISHARES-S&P 500 | IVV | $29.83B | 25.2% | +52% shares |
| SPDR PORTFOLIO L | SPYM | $4.12B | 3.5% | -6% shares |
| APPLE INC | AAPL | $2.63B | 2.2% | +8% shares |
| AMAZON.COM INC | AMZN | $2.27B | 1.9% | +8% shares |
| ADV MICRO DEVICE | AMD | $2.26B | 1.9% | +3% shares |
| NVIDIA CORP | NVDA | $1.73B | 1.5% | -37% shares |
| MICRON TECH | MU | $1.56B | 1.3% | +50% shares |
| MICROSOFT CORP | MSFT | $1.25B | 1.1% | unchanged |
| COSTCO WHOLESALE | COST | $1.10B | 0.9% | +345% shares |
| MORGAN STANLEY | MS | $971.79M | 0.8% | +11% shares |
| TESLA INC | TSLA | $920.45M | 0.8% | +5% shares |
| TAIWAN SEMIC-ADR | TSM | $864.63M | 0.7% | -19% shares |
| ALPHABET INC-A | GOOGL | $790.12M | 0.7% | -30% shares |
| HILTON WORLDWIDE | HLT | $766.44M | 0.7% | -8% shares |
| UNITEDHEALTH GRP | UNH | $761.87M | 0.6% | +30% shares |
| JOHNSON&JOHNSON | JNJ | $759.25M | 0.6% | +26% shares |
| ABBVIE INC | ABBV | $752.53M | 0.6% | +281758% shares |
| BANK OF AMERICA | BAC | $711.31M | 0.6% | +582% shares |
| COCA-COLA CO/THE | KO | $669.72M | 0.6% | +47% shares |
| JP MORGAN CHASE | JPM | $647.48M | 0.6% | +11481% shares |
| ABBOTT LABS | ABT | $502.92M | 0.4% | +176% shares |
| META PLATFORMS-A | META | $502.19M | 0.4% | -8% shares |
| CME GROUP INC | CME | $494.95M | 0.4% | +179% shares |
| BLOOM ENERGY C-A | BE | $490.05M | 0.4% | +57% shares |
| AMERICAN EXPRESS | AXP | $483.41M | 0.4% | +1034% shares |
What changed since Q1 2026
Against the Q1 2026 filing, Marshall Wace LLP opened 687 new positions, added to 955, trimmed 1,014, left 63 unchanged and exited 648. Every position is compared, matched on its CUSIP; a change of 2% or less in shares counts as unchanged.
Other quarters
Source: SEC Form 13F-HR, accession 0001318757-26-000010, filed by MARSHALL WACE, LLP. Values are as filed and cover US-listed positions only; a 13F does not show short positions or holdings outside the US. A 13F may be filed up to 45 days after the quarter ends, so the fund may have traded since. Educational information, not financial advice.