Mawer Investment Management Ltd. holds a diversified book of 126 stocks worth $15.4B as of Q1 2026 (disclosed May 6, 2026, a ~36-day 13F lag). This quarter they opened Tower Semiconductor Ltd and trimmed Alphabet Inc-CL C. Their largest long position is Alphabet Inc-CL C at 6% of the equity book. Cloning the disclosed picks since 2013 would be +173% (+8.2%/yr). That is a simulation of the disclosed long book, not audited returns.
The reported book (valued from quarter-end) returned +220.1%, a 46.9-point gap that is the cost of the ~36-day 13F disclosure lag a real follower can't avoid.
Growth of $10,000 cloning Mawer Investment Management Ltd.'s disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~36 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% mapped to company sectors
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices, no cost basis
Other tracked managers holding the same core names as Mawer Investment Management Ltd.
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| BlackRock, Inc. | 80 / 80 | $1.5T |
| FMR LLC | 80 / 80 | $592.5B |
| JPMORGAN CHASE & CO | 80 / 80 | $362.6B |
| MORGAN STANLEY | 80 / 80 | $342.8B |
| BANK OF AMERICA CORP /DE/ | 80 / 80 | $195.6B |
| GOLDMAN SACHS GROUP INC | 80 / 80 | $152.6B |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME | 80 / 80 | $147.5B |
| ROYAL BANK OF CANADA | 80 / 80 | $100.0B |
Ranked by how many of Mawer Investment Management Ltd.'s top 80 disclosed names each fund also holds: a cross-fund conviction signal from the latest 13F of every tracked manager.
Bars show each stock's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Alphabet Inc CAP STK CL C | $937.0M | 3.27M | 6.1% | ▼−11% Reduced · −403K sh | |
| 2 | Microsoft Corp COM | $857.0M | 2.32M | 5.5% | ▼−12% Reduced · −311K sh | |
| 3 | Amazon Com Inc COM | $760.2M | 3.65M | 4.9% | ▼−10% Reduced · −420K sh | |
| 4 | Shell PLC SPON ADS | $662.2M | 7.12M | 4.3% | ▼−12% Reduced · −955K sh | |
| 5 | Marsh & McLennan Cos Inc COM | $602.8M | 3.48M | 3.9% | ▼−11% Reduced · −430K sh | |
| 6 | Visa Inc COM CL A | $585.4M | 1.94M | 3.8% | ▼−4.8% Reduced · −98K sh | |
| 7 | Amphenol Corp CL A | $503.7M | 3.99M | 3.3% | ▼−22% Reduced · −1.1M sh | |
| 8 | Northrop Grumman Corp COM | $466.2M | 683.4K | 3.0% | ▼−19% Reduced · −163K sh | |
| 9 | Waters Corp COM | $418.0M | 1.40M | 2.7% | ▲+8.1% Added · +105K sh | |
| 10 | Aon PLC SHS CL A | $412.2M | 1.28M | 2.7% | ▼−14% Reduced · −201K sh | |
| 11 | Wells Fargo & Co COM | $371.8M | 4.67M | 2.4% | ▼−4.2% Reduced · −206K sh | |
| 12 | Aercap Holdings NV SHS | $367.6M | 2.68M | 2.4% | ▼−18% Reduced · −593K sh | |
| 13 | Berkshire Hathaway Inc Del CL A | $365.5M | 509 | 2.4% | ▼−13% Reduced · −78 sh | |
| 14 | Meta Platforms Inc CL A | $350.6M | 612.8K | 2.3% | ▼−11% Reduced · −75K sh | |
| 15 | Southern Co COM | $330.3M | 3.42M | 2.1% | ▲+94% Added · +1.7M sh | |
| 16 | JPMorgan Chase & Co COM | $327.6M | 1.11M | 2.1% | ▲+9.7% Added · +98K sh | |
| 17 | Intercontinental Exchange In COM | $327.2M | 2.08M | 2.1% | ▼−14% Reduced · −350K sh | |
| 18 | Cencora Inc COM | $323.9M | 1.03M | 2.1% | ▲+67% Added · +413K sh | |
| 19 | Cme Group Inc COM | $304.6M | 1.03M | 2.0% | ▼−9.6% Reduced · −109K sh | |
| 20 | Booking Holdings Inc COM | $238.7M | 56.7K | 1.5% | ▼−49% Reduced · −56K sh | |
| 21 | Fti Consulting Inc COM | $231.7M | 1.31M | 1.5% | ▼−43% Reduced · −995K sh | |
| 22 | Mastercard Incorporated CL A | $226.0M | 452.2K | 1.5% | ▼−2.4% Reduced · −11K sh | |
| 23 | Medpace Hldgs Inc COM | $214.2M | 446.1K | 1.4% | ▲+9.5% Added · +39K sh | |
| 24 | Sprott Inc COM NEW | $193.1M | 1.35M | 1.3% | ▼−11% Reduced · −164K sh | |
| 25 | Osi Systems Inc COM | $175.9M | 662.6K | 1.1% | ▼−18% Reduced · −141K sh | |
| 26 | American Elec PWR Co Inc COM | $174.9M | 1.33M | 1.1% | ▲+37% Added · +358K sh | |
| 27 | Tower Semiconductor Ltd SHS NEW | $169.3M | 965.0K | 1.1% | ▲New New position | |
| 28 | Nvidia Corporation COM | $165.9M | 951.5K | 1.1% | ▲+167% Added · +595K sh | |
| 29 | S&P Global Inc COM | $163.0M | 383.1K | 1.1% | ▲+86% Added · +177K sh | |
| 30 | Uber Technologies Inc COM | $159.2M | 2.21M | 1.0% | ▼−12% Reduced · −290K sh | |
| 31 | Ferguson Enterprises Inc COMMON STOCK NEW | $156.8M | 672.0K | 1.0% | ▼−21% Reduced · −175K sh | |
| 32 | Martin Marietta Matls Inc COM | $150.5M | 255.7K | 1.0% | ▼−3.5% Reduced · −9K sh | |
| 33 | BWX Technologies Inc COM | $150.1M | 734.2K | 1.0% | ▼−5.0% Reduced · −39K sh | |
| 34 | Corpay Inc COM SHS | $149.4M | 513.5K | 1.0% | ▼−19% Reduced · −117K sh | |
| 35 | Verizon Communications Inc COM | $137.1M | 2.73M | 0.9% | ▼−8.5% Reduced · −254K sh | |
| 36 | Abbott Laboratories COM | $128.7M | 1.25M | 0.8% | ▲+0.7% Added · +8K sh | |
| 37 | CDW Corp COM | $127.3M | 1.05M | 0.8% | ▼−41% Reduced · −735K sh | |
| 38 | Gallagher Arthur J & Co COM | $125.9M | 581.3K | 0.8% | ▼−5.2% Reduced · −32K sh | |
| 39 | Procter & Gamble Co COM | $123.0M | 851.2K | 0.8% | ▼−5.1% Reduced · −45K sh | |
| 40 | Caci Intl Inc CL A | $121.9M | 224.2K | 0.8% | ▼−8.9% Reduced · −22K sh | |
| 41 | Nu Hldgs Ltd ORD SHS CL A | $110.7M | 7.70M | 0.7% | ▲+68% Added · +3.1M sh | |
| 42 | Airbnb Inc COM CL A | $108.1M | 855.7K | 0.7% | ▲+28% Added · +188K sh | |
| 43 | Zoetis Inc CL A | $89.0M | 753.3K | 0.6% | ▲+113% Added · +399K sh | |
| 44 | Johnson & Johnson COM | $88.5M | 362.1K | 0.6% | ▼−13% Reduced · −54K sh | |
| 45 | Itt Inc COM | $86.5M | 454.2K | 0.6% | ▲+7.4% Added · +31K sh | |
| 46 | Texas Instrs Inc COM | $85.0M | 437.6K | 0.6% | ▼−4.2% Reduced · −19K sh | |
| 47 | Aptargroup Inc COM | $82.8M | 657.3K | 0.5% | ▼−68% Reduced · −1.4M sh | |
| 48 | Esquire Finl Hldgs Inc COM | $78.0M | 725.2K | 0.5% | ▼−9.4% Reduced · −75K sh | |
| 49 | McKesson Corp COM | $74.1M | 85.7K | 0.5% | ▲New New position | |
| 50 | Tradeweb MKTS Inc CL A | $73.7M | 626.6K | 0.5% | ▲+18% Added · +95K sh |
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/funds/1538449/holdings"
Use Arkolith to show Mawer Investment Management Ltd.'s latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
| Quarter | As of | Filed | Positions | Value | Form |
|---|---|---|---|---|---|
| Q1 2026 | Mar 31, 2026 | May 6, 2026 | 126 | $15.4B | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Feb 10, 2026 | 125 | $17.9B | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Nov 4, 2025 | 141 | $19.3B | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Aug 7, 2025 | 138 | $19.7B | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 7, 2025 | 132 | $20.7B | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Feb 12, 2025 | 127 | $22.0B | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Nov 7, 2024 | 128 | $21.9B | 13F-HR |
| Q2 2024 | Jun 30, 2024 | Aug 7, 2024 | 130 | $21.1B | 13F-HR |
| Q1 2024 | Mar 31, 2024 | May 6, 2024 | 130 | $21.6B | 13F-HR |
| Q4 2023 | Dec 31, 2023 | Feb 7, 2024 | 132 | $19.5B | 13F-HR |
| Q3 2023 | Sep 30, 2023 | Nov 6, 2023 | 132 | $18.7B | 13F-HR |
| Q2 2023 | Jun 30, 2023 | Aug 9, 2023 | 128 | $19.1B | 13F-HR |
| Q1 2023 | Mar 31, 2023 | May 5, 2023 | 130 | $18.3B | 13F-HR |
| Q4 2022 | Dec 31, 2022 | Feb 8, 2023 | 139 | $17.7B | 13F-HR/A |
| Q3 2022 | Sep 30, 2022 | Nov 9, 2022 | 133 | $16.5B | 13F-HR |
| Q2 2022 | Jun 30, 2022 | Aug 9, 2022 | 131 | $17.6B | 13F-HR |
| Q1 2022 | Mar 31, 2022 | May 6, 2022 | 111 | $21.1B | 13F-HR |
| Q4 2021 | Dec 31, 2021 | Feb 9, 2022 | 119 | $22.2B | 13F-HR |
| Q3 2021 | Sep 30, 2021 | Nov 10, 2021 | 110 | $20.9B | 13F-HR |
| Q2 2021 | Jun 30, 2021 | Aug 11, 2021 | 98 | $20.2B | 13F-HR |
| Q1 2021 | Mar 31, 2021 | May 14, 2021 | 95 | $18.4B | 13F-HR |
| Q4 2020 | Dec 31, 2020 | Feb 9, 2021 | 94 | $17.0B | 13F-HR |
| Q3 2020 | Sep 30, 2020 | Nov 13, 2020 | 94 | $15.3B | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.