MARSHALL WACE, LLP

Marshall Wace, the London-based systematic and long/short manager, reported $109.9B across 6,074 positions for the December 2025 quarter — but the book is dominated by a single line: the iShares Core S&P 500 ETF (IVV) at 20.2% of assets, with Vanguard's VOO adding another 2.6%. That ETF overlay sits atop a diversified single-name book led by NVIDIA, Amazon, Apple and Microsoft. The largest add was IVV itself (+$3.8B), with Alphabet (+$609M) and Broadcom (+$604M) also increased; new positions included VOO, Eli Lilly, Coca-Cola and UnitedHealth. Microsoft (-$1.6B) and Apple (-$951M) were the largest trims. Assets grew from $98.6B to $109.9B.