Marshall Wace, LLP — 13F Holdings & Portfolio
CIK 1318757 · latest 13F-HR filed 2026-08-13
Marshall Wace, LLP manages $126.70B in 13F-reported U.S. long-equity assets across 6,550 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are IVV (13.43%), IVV (9.06%), SPYM (1.79%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 687 new positions and exited 649; 1,041 existing positions rose in reported value and 897 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Loading holdings…
AUM
$126.70B
Long-equity book
Holdings
6,550
Distinct positions
Period
2026-06-30
Filed 2026-08-13
Q/Q Activity
+687 / −649 / ↑1041 / ↓897
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Firm Profile & Key People
As of the firm’s regulatory filing dated May 29, 2026.
Address
GEORGE HOUSE, 131 SLOANE STREET
LONDON SW1X 9AT
United Kingdom
LONDON SW1X 9AT
United Kingdom
Phone
+44 207-316-2280
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| ANDERSON, DESMOND, JOHN Control | COO since Oct 2017 | Less than 5% | Individual |
| CLAKE, ANTHONY, PETER Control | PARTNER since Sep 2004 | 10–25% | Individual |
| Jones, Sven Control | CHIEF COMPLIANCE OFFICER since Jun 2018 | Less than 5% | Individual |
| MARSHALL WACE ASSET MANAGEMENT LIMITED Control | PARTNER, MARSHALL WACE LLP since Jul 2011 | 75% or more | Foreign Entity |
| MARSHALL, PAUL, R Control | CIO since Nov 1997 | 10–25% | Individual |
| MAY, JONATHAN, EDWARD Control | GENERAL COUNSEL since Sep 2005 | Less than 5% | Individual |
| Musgrave, Claire, Jayne Control | FINANCE DIRECTOR since Jan 2021 | Less than 5% | Individual |
| WACE, IAN, GERALD Control | CEO since Nov 1997 | 10–25% | Individual |
| KAPPA HOLDINGS LTD. Control Indirect owner via MW GROUP (GP) LTD | SHAREHOLDER since Oct 2015 | 25–50% | Foreign Entity |
| KKR & CO. INC. Control Indirect owner via KKR GROUP CO. INC. | SHAREHOLDER since May 2022 | 75% or more | Domestic Entity |
| KKR GROUP CO. INC. Control Indirect owner via KKR GROUP HOLDINGS CORP. | SHAREHOLDER since May 2022 | 75% or more | Domestic Entity |
| KKR GROUP HOLDINGS CORP. Control Indirect owner via KKR GROUP PARTNERSHIP L.P. | SHAREHOLDER & GENERAL PARTNER since Jul 2018 | 50–75% | Domestic Entity |
| KKR GROUP PARTNERSHIP L.P. Control Indirect owner via KAPPA HOLDINGS LTD. | SHAREHOLDER since Oct 2009 | 75% or more | Foreign Entity |
| KKR MANAGEMENT LLP Control Indirect owner via KKR & CO. INC. | SHAREHOLDER since May 2022 | 75% or more | Domestic Entity |
| MW GROUP (GP) LTD Control Indirect owner via MW GROUP LP | SHAREHOLDER & GENERAL PARTNER since Oct 2015 | 25–50% | Foreign Entity |
| MW GROUP LP Control Indirect owner via MW LTD | SHAREHOLDER since Oct 2015 | 75% or more | Foreign Entity |
| MW LTD Control Indirect owner via MARSHALL WACE ASSET MANAGEMENT LIMITED | MANAGING MEMBER since Mar 2020 | 75% or more | Foreign Entity |
Ownership & leadership changes · 15 filings with changes since Apr 2, 2012
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
Dec 22, 2023 filing
- No longer listedSARGENT, MICHAEL, MANNING · CFO · Less than 5% · control person · listed since Jul 2008
- ChangedMusgrave, Claire, Jayne · title CFO → FINANCE DIRECTOR
May 30, 2023 filing
- No longer listedFORD, DUNCAN, EDWARD · COO · 5–10% · control person · listed since May 2000
- ChangedANDERSON, DESMOND, JOHN · title PARTNER → COO
Jul 27, 2022 filing
- No longer listedKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP LP · control person · listed since Oct 2015
- Listed againKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP (GP) LTD · control person
Jun 29, 2022 filing
- No longer listedKKR & CO. INC. · SHAREHOLDER · 75% or more · indirect via KKR GROUP HOLDINGS CORP. · control person · listed since Jul 2018
- AddedKKR & CO. INC. · SHAREHOLDER · 75% or more · indirect via KKR GROUP CO. INC. · control person
- AddedKKR GROUP CO. INC. · SHAREHOLDER · 75% or more · indirect via KKR GROUP HOLDINGS CORP. · control person
May 26, 2022 filing
- No longer listedFRAGOMENI, ERNESTO · PARTNER · Less than 5% · control person · listed since Sep 2006
- No longer listedHofmeyr, Alan · PARTNER · Less than 5% · listed since May 2016
- No longer listedKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP (GP) LTD · control person · listed since Oct 2015
- AddedMusgrave, Claire, Jayne · CFO · Less than 5% · control person
- Listed againKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP LP · control person
May 28, 2021 filing
- AddedHofmeyr, Alan · PARTNER · Less than 5%
- AddedKKR MANAGEMENT LLP · SHAREHOLDER · 75% or more · indirect via KKR & CO. INC. · control person
- AddedMW LTD · MANAGING MEMBER · 75% or more · indirect via MARSHALL WACE ASSET MANAGEMENT LIMITED · control person
Jul 24, 2020 filing
- No longer listedKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP LP · control person · listed since Oct 2015
- No longer listedKKR FUND HOLDINGS GP LIMITED · GENERAL PARTNER · General partner, trustee or manager · indirect via KKR FUND HOLDINGS L.P. · control person · listed since Jul 2008
- No longer listedKKR FUND HOLDINGS L.P. · SHAREHOLDER · 75% or more · indirect via KAPPA HOLDINGS LTD. · control person · listed since Oct 2009
- No longer listedKKR GROUP HOLDINGS CORP. · GENERAL PARTNER · 50–75% · indirect via KKR FUND HOLDINGS L.P. · control person · listed since Jul 2018
- No longer listedKKR GROUP HOLDINGS CORP. · SHAREHOLDER · 75% or more · indirect via KKR FUND HOLDINGS GP LIMITED · control person · listed since Jul 2018
- No longer listedMW LTD · SHAREHOLDER · 75% or more · indirect via MWAM UK LIMITED · control person · listed since Oct 2015
- AddedKKR GROUP HOLDINGS CORP. · SHAREHOLDER & GENERAL PARTNER · 50–75% · indirect via KKR GROUP PARTNERSHIP L.P. · control person
- AddedKKR GROUP PARTNERSHIP L.P. · SHAREHOLDER · 75% or more · indirect via KAPPA HOLDINGS LTD. · control person
- Listed againKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP (GP) LTD · control person
- ChangedMW GROUP (GP) LTD · indirect via MW GROUP LP: title GENERAL PARTNER → SHAREHOLDER & GENERAL PARTNER; ownership General partner, trustee or manager → 25–50%
May 28, 2020 filing
- ChangedMW GROUP (GP) LTD · indirect via MW GROUP LP: ownership 25–50% → General partner, trustee or manager
Mar 6, 2020 filing
- No longer listedKKR GROUP LIMITED · GENERAL PARTNER · General partner, trustee or manager · indirect via KKR GROUP HOLDINGS CORP. · control person · listed since Jul 2009
May 29, 2019 filing
- No longer listedKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP (GP) LTD · control person · listed since Oct 2015
- No longer listedKKR & CO. L.P. · SHAREHOLDER · 75% or more · indirect via KKR GROUP LIMITED · control person · listed since Jul 2009
- No longer listedKKR & CO. L.P. · LIMITED PARTNER · 75% or more · indirect via KKR GROUP HOLDINGS L.P. · control person · listed since Jul 2010
- No longer listedKKR GROUP HOLDINGS L.P. · GENERAL PARTNER · 25–50% · indirect via KKR FUND HOLDINGS L.P. · control person · listed since Jul 2009
- No longer listedKKR GROUP LIMITED · GENERAL PARTNER · General partner, trustee or manager · indirect via KKR GROUP HOLDINGS L.P. · control person · listed since Jul 2009
- AddedJones, Sven · CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- AddedKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP LP · control person
- AddedKKR & CO. INC. · SHAREHOLDER · 75% or more · indirect via KKR GROUP HOLDINGS CORP. · control person
- AddedKKR GROUP HOLDINGS CORP. · GENERAL PARTNER · 50–75% · indirect via KKR FUND HOLDINGS L.P. · control person
- AddedKKR GROUP HOLDINGS CORP. · SHAREHOLDER · 75% or more · indirect via KKR FUND HOLDINGS GP LIMITED · control person
- AddedKKR GROUP LIMITED · GENERAL PARTNER · General partner, trustee or manager · indirect via KKR GROUP HOLDINGS CORP. · control person
Older changes (6 more filings)
May 17, 2018 filing
- Listed againANDERSON, DESMOND, JOHN · PARTNER · Less than 5% · control person
Jan 19, 2018 filing
- No longer listedMWAM UK LIMITED · SHAREHOLDER · 75% or more · indirect via MARSHALL WACE ASSET MANAGEMENT LIMITED · control person · listed since Jul 2011
- AddedKAPPA HOLDINGS LTD. · SHAREHOLDER · 25–50% · indirect via MW GROUP (GP) LTD · control person
- AddedKKR & CO. L.P. · SHAREHOLDER · 75% or more · indirect via KKR GROUP LIMITED · control person
- AddedKKR & CO. L.P. · LIMITED PARTNER · 75% or more · indirect via KKR GROUP HOLDINGS L.P. · control person
- AddedKKR FUND HOLDINGS GP LIMITED · GENERAL PARTNER · General partner, trustee or manager · indirect via KKR FUND HOLDINGS L.P. · control person
- AddedKKR FUND HOLDINGS L.P. · SHAREHOLDER · 75% or more · indirect via KAPPA HOLDINGS LTD. · control person
- AddedKKR GROUP HOLDINGS L.P. · GENERAL PARTNER · 25–50% · indirect via KKR FUND HOLDINGS L.P. · control person
- AddedKKR GROUP LIMITED · GENERAL PARTNER · General partner, trustee or manager · indirect via KKR GROUP HOLDINGS L.P. · control person
- ChangedMARSHALL, PAUL, R · ownership 25–50% → 10–25%
- ChangedMW GROUP (GP) LTD · indirect via MW GROUP LP: ownership General partner, trustee or manager → 25–50%
- ChangedWACE, IAN, GERALD · ownership 25–50% → 10–25%
Nov 30, 2015 filing
- No longer listedANDERSON, DESMOND, JOHN · PARTNER · Less than 5% · control person · listed since Dec 2010
- No longer listedMARSHALL WACE HOLDINGS LIMITED · SHAREHOLDER · 75% or more · indirect via MWAM UK LIMITED · control person · listed since Jul 2011
- No longer listedMARSHALL, PAUL, R · PARTNER · 25–50% · indirect via MW PARTNERS LP · control person · listed since Jul 2011
- No longer listedMW PARTNERS (GP) LIMITED · PARTNER · General partner, trustee or manager · indirect via MW PARTNERS LP · control person · listed since Jul 2011
- No longer listedMW PARTNERS LP · SHAREHOLDER · 75% or more · indirect via MARSHALL WACE HOLDINGS LIMITED · control person · listed since Jul 2011
- No longer listedSEVER, FEHIM, CAN · PARTNER · Less than 5% · control person · listed since Nov 2013
- No longer listedWACE, IAN, GERALD · PARTNER · 25–50% · indirect via MW PARTNERS LP · control person · listed since Jul 2011
- AddedMW GROUP (GP) LTD · GENERAL PARTNER · General partner, trustee or manager · indirect via MW GROUP LP · control person
- AddedMW GROUP LP · SHAREHOLDER · 75% or more · indirect via MW LTD · control person
- AddedMW LTD · SHAREHOLDER · 75% or more · indirect via MWAM UK LIMITED · control person
May 29, 2014 filing
- AddedMW PARTNERS (GP) LIMITED · PARTNER · General partner, trustee or manager · indirect via MW PARTNERS LP · control person
- ChangedMARSHALL WACE ASSET MANAGEMENT LIMITED · title BENEFICIAL OWNER, MARSHALL WACE LLP → PARTNER, MARSHALL WACE LLP
- ChangedMARSHALL WACE HOLDINGS LIMITED · indirect via MWAM UK LIMITED: title BENEFICIAL OWNER → SHAREHOLDER
- ChangedMW PARTNERS LP · indirect via MARSHALL WACE HOLDINGS LIMITED: title BENEFICIAL OWNER → SHAREHOLDER
- ChangedMWAM UK LIMITED · indirect via MARSHALL WACE ASSET MANAGEMENT LIMITED: title BENEFICIAL OWNER → SHAREHOLDER
May 28, 2014 filing
- AddedSEVER, FEHIM, CAN · PARTNER · Less than 5% · control person
- ChangedANDERSON, DESMOND, JOHN · now a control person
- ChangedFRAGOMENI, ERNESTO · now a control person
Apr 2, 2012 filing (earliest on record)
- ListedANDERSON, DESMOND, JOHN · PARTNER · Less than 5%
- ListedCLAKE, ANTHONY, PETER · PARTNER · 10–25% · control person
- ListedFORD, DUNCAN, EDWARD · COO · 5–10% · control person
- ListedFRAGOMENI, ERNESTO · PARTNER · Less than 5%
- ListedMARSHALL WACE ASSET MANAGEMENT LIMITED · BENEFICIAL OWNER, MARSHALL WACE LLP · 75% or more · control person
- ListedMARSHALL WACE HOLDINGS LIMITED · BENEFICIAL OWNER · 75% or more · indirect via MWAM UK LIMITED · control person
- ListedMARSHALL, PAUL, R · CIO · 25–50% · control person
- ListedMARSHALL, PAUL, R · PARTNER · 25–50% · indirect via MW PARTNERS LP · control person
- ListedMAY, JONATHAN, EDWARD · GENERAL COUNSEL · Less than 5% · control person
- ListedMW PARTNERS LP · BENEFICIAL OWNER · 75% or more · indirect via MARSHALL WACE HOLDINGS LIMITED · control person
- ListedMWAM UK LIMITED · BENEFICIAL OWNER · 75% or more · indirect via MARSHALL WACE ASSET MANAGEMENT LIMITED · control person
- ListedSARGENT, MICHAEL, MANNING · CFO · Less than 5% · control person
- ListedWACE, IAN, GERALD · CEO · 25–50% · control person
- ListedWACE, IAN, GERALD · PARTNER · 25–50% · indirect via MW PARTNERS LP · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- ISHARES-S&P 500$12.66B +73.7%
- ADV MICRO DEVICE$1.49B +193.5%
- MICRON TECH$1.25B +411.2%
- COSTCO WHOLESALE$835.9M +318.1%
- ABBVIE INC$752.3M +326014.7%
Top Trims
- NVIDIA CORP-$654.2M -27.5%
- MERCADOLIBRE INC-$534.9M -98.3%
- CHEVRON CORP-$443.5M -51.3%
- PFIZER INC-$432.3M -95.7%
- CIRCLE INTERNET-$371.7M -67.2%
New Positions
- LPL FINANCIAL HO$274.8M
- HUMANA INC$216.9M
- REPUBLIC SVCS$196.0M
- WINGSTOP INC$166.7M
- INVESCO S&P 500$149.7M
Exited Positions
- MERCK & CO$334.2M
- SEMPRA$132.0M
- INSULET CORP$127.3M
- ROCKET LAB CORP$120.8M
- KIMBERLY-CLARK$114.1M
Marshall Wace, LLP Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ISHARES-S&P 500 | IVV | 464287200 | $17.01B | 13.43% | 22,714,278 | SH |
| 2 | ISHARES-S&P 500 | IVV | 464287200 | $11.48B | 9.06% | 15,324,187 | SH |
| 3 | SPDR PORTFOLIO L | SPYM | 78464A854 | $2.26B | 1.79% | 25,770,487 | SH |
| 4 | SPDR PORTFOLIO L | SPYM | 78464A854 | $1.81B | 1.43% | 20,545,659 | SH |
| 5 | ADV MICRO DEVICE | AMD | 007903107 | $1.44B | 1.14% | 2,482,700 | SH |
| 6 | ISHARES-S&P 500 | IVV | 464287200 | $1.29B | 1.01% | 1,716,119 | SH |
| 7 | APPLE INC | AAPL | 037833100 | $1.21B | 0.95% | 4,170,171 | SH |
| 8 | NVIDIA CORP | NVDA | 67066G104 | $1.08B | 0.85% | 5,399,013 | SH |
| 9 | AMAZON.COM INC | AMZN | 023135106 | $1.08B | 0.85% | 4,524,462 | SH |
| 10 | MICRON TECH | MU | 595112103 | $973.9M | 0.77% | 843,719 | SH |
| 11 | APPLE INC | AAPL | 037833100 | $755.8M | 0.60% | 2,611,988 | SH |
| 12 | TESLA INC | TSLA | 88160R101 | $659.6M | 0.52% | 1,568,192 | SH |
| 13 | COSTCO WHOLESALE | COST | 22160K105 | $586.3M | 0.46% | 626,759 | SH |
| 14 | MICROSOFT CORP | MSFT | 594918104 | $575.6M | 0.45% | 1,543,158 | SH |
| 15 | NVIDIA CORP | NVDA | 67066G104 | $531.9M | 0.42% | 2,658,089 | SH |
| 16 | AMAZON.COM INC | AMZN | 023135106 | $520.3M | 0.41% | 2,183,139 | SH |
| 17 | TAIWAN SEMIC-ADR | TSM | 874039100 | $477.8M | 0.38% | 1,000,493 | SH |
| 18 | AMAZON.COM INC | AMZN | 023135106 | $465.2M | 0.37% | 1,951,878 | SH |
| 19 | ALPHABET INC-A | GOOGL | 02079K305 | $445.2M | 0.35% | 1,245,695 | SH |
| 20 | APPLE INC | AAPL | 037833100 | $445.2M | 0.35% | 1,538,440 | SH |
| 21 | ADV MICRO DEVICE | AMD | 007903107 | $399.0M | 0.31% | 686,911 | SH |
| 22 | UNITEDHEALTH GRP | UNH | 91324P102 | $396.9M | 0.31% | 954,967 | SH |
| 23 | MORGAN STANLEY | MS | 617446448 | $392.0M | 0.31% | 1,875,270 | SH |
| 24 | JOHNSON&JOHNSON | JNJ | 478160104 | $388.2M | 0.31% | 1,528,568 | SH |
| 25 | COCA-COLA CO/THE | KO | 191216100 | $381.4M | 0.30% | 4,693,364 | SH |
| 26 | BLOOM ENERGY C-A | BE | 093712107 | $362.5M | 0.29% | 1,197,624 | SH |
| 27 | MORGAN STANLEY | MS | 617446448 | $361.8M | 0.29% | 1,730,598 | SH |
| 28 | JP MORGAN CHASE | JPM | 46625H100 | $359.6M | 0.28% | 1,098,618 | SH |
| 29 | MICROSOFT CORP | MSFT | 594918104 | $354.4M | 0.28% | 950,000 | SH |
| 30 | ABBVIE INC | ABBV | 00287Y109 | $349.3M | 0.28% | 1,388,205 | SH |
| 31 | MARKET VECTORS S Put | SMH | 92189F676 | $348.7M | 0.28% | 531,700 | SH |
| 32 | ABBVIE INC | ABBV | 00287Y109 | $348.3M | 0.27% | 1,384,122 | SH |
| 33 | JOHNSON&JOHNSON | JNJ | 478160104 | $344.5M | 0.27% | 1,356,534 | SH |
| 34 | EXXON MOBIL CORP | XOM | 30231G102 | $327.7M | 0.26% | 2,397,198 | SH |
| 35 | ABBOTT LABS | ABT | 002824100 | $324.5M | 0.26% | 3,576,090 | SH |
| 36 | IBM | IBM | 459200101 | $320.7M | 0.25% | 1,140,488 | SH |
| 37 | AMERICAN EXPRESS | AXP | 025816109 | $318.0M | 0.25% | 940,238 | SH |
| 38 | META PLATFORMS-A | META | 30303M102 | $316.9M | 0.25% | 562,527 | SH |
| 39 | CISCO SYSTEMS | CSCO | 17275R102 | $313.1M | 0.25% | 2,665,600 | SH |
| 40 | CME GROUP INC | CME | 12572Q105 | $310.7M | 0.25% | 1,406,838 | SH |
| 41 | BANK OF AMERICA | BAC | 060505104 | $301.1M | 0.24% | 5,283,644 | SH |
| 42 | CHEVRON CORP | CVX | 166764100 | $297.6M | 0.23% | 1,795,354 | SH |
| 43 | HILTON WORLDWIDE | HLT | 43300A203 | $296.6M | 0.23% | 897,604 | SH |
| 44 | MICRON TECH | MU | 595112103 | $288.5M | 0.23% | 249,945 | SH |
| 45 | UNITEDHEALTH GRP | UNH | 91324P102 | $286.9M | 0.23% | 690,324 | SH |
| 46 | ALPHABET INC-A | GOOGL | 02079K305 | $283.6M | 0.22% | 793,523 | SH |
| 47 | TEXAS INSTRUMENT | TXN | 882508104 | $280.8M | 0.22% | 942,132 | SH |
| 48 | AUTOMATIC DATA | ADP | 053015103 | $278.7M | 0.22% | 1,244,497 | SH |
| 49 | ELI LILLY & CO | LLY | 532457108 | $275.8M | 0.22% | 229,925 | SH |
| 50 | MICRON TECH | MU | 595112103 | $269.5M | 0.21% | 233,480 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $126.70B | 6,550 | 0001318757-26-000010 |
| 2026-03-31 | 2026-05-15 | $100.41B | 6,623 | 0001318757-26-000005 |
| 2025-12-31 | 2026-02-13 | $109.85B | 6,074 | 0001318757-26-000003 |
| 2025-09-30 | 2025-11-13 | $98.60B | 5,977 | 0001318757-25-000046 |
Filer Information
Address
GEORGE HOUSE131 SLOANE STREET
LONDON, X0 SW1X 9AT
Phone
44-207-316-2251
Filing Manager
MARSHALL WACE, LLP
LONDON, X0
Signatory
Eric Siegel
Operations Manager