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Super Investors / Mawer Investment Management Ltd.
MI

Mawer Investment Management Ltd.

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$14.7B
Positions
142
Quarter ended
June 30, 2026
Filed
August 07, 2026

Reported portfolio value by quarter (53 quarters reported)

$22.2B $2.68B
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q2 26

$2.68B in Q2 2013 → $14.7B now. Hover for any quarter.

Holdings

As reported for the quarter ended June 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Alphabet Inc 6.4% Trimmed 18% 2,682,081 $948M
Amazon Com Inc 4.9% Trimmed 17% 3,028,097 $722M
Microsoft Corp 4.3% Trimmed 27% 1,679,876 $627M
Shell PLC 4.2% Added 13% 8,013,792 $621M
Nvidia Corporation 4.2% Added 224% 3,078,576 $616M
Visa Inc 4.0% Trimmed 11% 1,730,185 $594M
Waters Corp 3.1% Trimmed 13% 1,216,947 $456M
Cencora Inc 2.9% Added 44% 1,488,843 $421M
Amphenol Corp 2.8% Trimmed 41% 2,358,285 $416M
Aon PLC 2.6% Trimmed 8.3% 1,171,624 $389M
Aercap Holdings Nv 2.4% Trimmed 9.7% 2,420,238 $353M
WF Wells Fargo & Co 2.4% Trimmed 10% 4,195,116 $347M
NG Northrop Grumman Corp 2.3% Trimmed 2.4% 667,069 $340M
AE American Elec Pwr Co Inc 2.1% Added 71% 2,283,858 $312M
M& Marsh & Mclennan Cos Inc 2.1% Trimmed 46% 1,871,159 $312M
BH Berkshire Hathaway Inc Del 2.1% Trimmed 18% 415 $311M
Meta Platforms Inc 2.1% Trimmed 11% 545,687 $307M
Jpmorgan Chase & Co 2.1% Trimmed 17% 927,802 $304M
Southern Co 2.0% Trimmed 12% 3,023,312 $289M
Tower Semiconductor Ltd 1.8% Added 7.6% 1,038,086 $271M
IE Intercontinental Exchange In 1.7% Trimmed 2.4% 2,031,582 $250M
Mastercard Incorporated 1.5% Trimmed 4.0% 434,186 $223M
Cme Group Inc 1.4% Trimmed 7.3% 955,942 $211M
S&P Global Inc 1.2% Added 12% 428,573 $175M
Sprott Inc 1.0% Trimmed 2.3% 1,320,706 $148M
Uber Technologies Inc 1.0% Trimmed 10% 1,983,808 $143M
MH Medpace Hldgs Inc 1.0% Trimmed 40% 267,175 $141M
MM Martin Marietta Matls Inc 0.9% Trimmed 5.5% 241,545 $139M
Mckesson Corp 0.9% Added 111% 180,449 $136M
Bwx Technologies Inc 0.9% Trimmed 6.0% 689,750 $134M
Cdw Corp 0.9% Trimmed 9.7% 949,381 $134M
TI Texas Instrs Inc 0.9% Added 2.2% 447,181 $133M
Booking Holdings Inc 0.9% Added 1206% 740,483 $132M
Corpay Inc 0.8% Trimmed 28% 367,757 $123M
GA Gallagher Arthur J & Co 0.8% Trimmed 12% 510,025 $117M
Procter & Gamble Co 0.8% Trimmed 7.8% 784,529 $115M
Fti Consulting Inc 0.7% Trimmed 44% 736,868 $110M
Abbvie Inc 0.7% Added 39% 431,246 $109M
Aaon Inc 0.7% Added 0.8% 855,173 $108M
Abbott Laboratories 0.7% Trimmed 5.3% 1,186,677 $108M
Airbnb Inc 0.7% Trimmed 13% 746,819 $107M
CI Caci Intl Inc 0.7% Added 0.2% 224,720 $104M
Novanta Inc 0.7% Added 22% 589,573 $95.7M
NH Nu Hldgs Ltd 0.6% Trimmed 7.1% 7,155,847 $95.6M
Cognex Corp 0.6% Added 10.0% 1,305,175 $94.5M
Itt Inc 0.6% Trimmed 6.9% 422,873 $83.6M
Verisk Analytics Inc 0.6% Added 63% 464,286 $83.4M
Johnson & Johnson 0.6% Trimmed 11% 322,477 $81.9M
EH Elevance Health Inc Formerly 0.5% Trimmed 0.9% 187,293 $72.4M
Verizon Communications Inc 0.5% Trimmed 39% 1,676,590 $71M
EF Esquire Finl Hldgs Inc 0.5% Trimmed 19% 583,871 $69.5M
Hdfc Bank Ltd 0.5% Trimmed 2.2% 2,624,709 $67.8M
VI Valmont Inds Inc 0.4% New 114,118 $65.9M
VS Veeva Sys Inc 0.4% Added 6369% 355,389 $63.1M
DD Danaher Corp Del 0.4% Trimmed 5.7% 319,583 $60.9M
TM Tradeweb Mkts Inc 0.4% Trimmed 7.5% 579,425 $57.7M
TS Taiwan Semiconductor Manufac 0.4% Trimmed 10% 120,328 $57.5M
Sk Telecom Co Ltd 0.4% New 1,708,146 $54.9M
Unitedhealth Group Inc 0.4% Trimmed 11% 129,954 $54M
TM Tencent Music Entmt Group 0.4% Trimmed 14% 6,202,845 $51.8M

Showing top 60 of 142 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q2 2026

quarter ended June 30, 2026 · filed August 07, 2026

Company Action Shares changed Value of change % of portfolio
Nvidia Corporation Added +2,127,064 +$426M 4.2%
Amphenol Corp Trimmed −1,628,476 −$287M 2.8%
M& Marsh & Mclennan Cos Inc Trimmed −1,604,431 −$267M 2.1%
Microsoft Corp Trimmed −635,352 −$237M 4.3%
Alphabet Inc Trimmed −584,251 −$206M 6.4%
Osi Systems Inc Exited −662,634 −$176M
Amazon Com Inc Trimmed −621,944 −$148M 4.9%
AE American Elec Pwr Co Inc Added +949,366 +$130M 2.1%
Cencora Inc Added +457,680 +$130M 2.9%
FE Ferguson Enterprises Inc Trimmed −527,249 −$125M 0.2%

Showing the 10 largest of 153 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 06, 2026

Company Action Shares changed Value of change % of portfolio
Booking Holdings Inc Trimmed −55,503 −$234M 1.5%
Deere & Co Exited −382,487 −$178M
Aptargroup Inc Trimmed −1,399,951 −$176M 0.5%
Fti Consulting Inc Trimmed −994,723 −$176M 1.5%
Tower Semiconductor Ltd New +965,035 +$169M 1.1%
Southern Co Added +1,653,984 +$160M 2.1%
Amphenol Corp Trimmed −1,098,785 −$139M 3.3%
Cencora Inc Added +412,879 +$130M 2.1%
Alphabet Inc Trimmed −402,727 −$116M 6.1%
Microsoft Corp Trimmed −311,338 −$115M 5.5%

Showing the 10 largest of 138 changes.

Q4 2025

quarter ended December 31, 2025 · filed February 10, 2026

Company Action Shares changed Value of change % of portfolio
Aon PLC Trimmed −1,020,396 −$360M 2.9%
WF Wells Fargo Co New Added +3,120,399 +$291M 2.5%
Shell PLC Added +3,574,353 +$263M 3.3%
Fti Consulting Inc Trimmed −1,039,907 −$178M 2.2%
Aercap Holdings Nv Added +1,179,241 +$170M 2.6%
Alphabet Inc Trimmed −534,777 −$168M 6.4%
Booking Holdings Inc Trimmed −31,029 −$166M 3.4%
Uber Technologies Inc Added +1,747,252 +$143M 1.1%
MH Medpace Hldgs Inc Trimmed −239,472 −$134M 1.3%
Pool Corp Exited −424,570 −$132M

Showing the 10 largest of 134 changes.

Q3 2025

quarter ended September 30, 2025 · filed November 04, 2025

Company Action Shares changed Value of change % of portfolio
Lululemon Athletica Inc Exited −1,359,440 −$323M
Waters Corp Added +1,074,449 +$322M 2.4%
Unitedhealth Group Inc Trimmed −907,064 −$313M 0.3%
IE Intercontinental Exchange In Added +1,586,620 +$267M 2.2%
Alphabet Inc Trimmed −1,003,189 −$244M 5.3%
Warner Music Group Corp Trimmed −7,058,998 −$240M 0.1%
Cme Group Inc Added +777,571 +$210M 2.1%
Trinet Group Inc Exited −2,806,573 −$205M
AN Amphenol Corp New Trimmed −1,517,720 −$188M 3.8%
Aptargroup Inc Added +1,358,269 +$182M 1.9%

Showing the 10 largest of 115 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 07, 2025

Company Action Shares changed Value of change % of portfolio
Fedex Corp Exited −2,274,767 −$555M
Meta Platforms Inc New +735,898 +$543M 2.8%
NG Northrop Grumman Corp New +984,009 +$492M 2.5%
Xp Inc Exited −24,589,426 −$338M
Unitedhealth Group Inc Trimmed −1,014,563 −$317M 1.7%
Jpmorgan Chase & Co. Added +809,976 +$235M 1.8%
Snap On Inc Trimmed −597,328 −$186M 0.2%
Aercap Holdings Nv New +1,550,229 +$181M 0.9%
Robert Half Inc. Trimmed −3,863,211 −$159M 0.8%
Alphabet Inc Trimmed −869,492 −$154M 4.7%

Showing the 10 largest of 113 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 07, 2025

Company Action Shares changed Value of change % of portfolio
BH Berkshire Hathaway Inc Del New +684 +$546M 2.6%
Aon PLC Trimmed −629,153 −$251M 6.3%
IE Intercontinental Exchange In Trimmed −1,428,583 −$246M 1.1%
S&P Global Inc Trimmed −463,983 −$236M 0.4%
MH Medpace Hldgs Inc New +696,219 +$212M 1.0%
MG Match Group Inc New Exited −5,254,933 −$172M
Pool Corp New +530,029 +$169M 0.8%
Xp Inc Trimmed −12,090,798 −$166M 1.6%
AN Amphenol Corp New Trimmed −2,483,941 −$163M 2.8%
PA Procter And Gamble Co Trimmed −907,432 −$155M 0.9%

Showing the 10 largest of 109 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 12, 2025

Company Action Shares changed Value of change % of portfolio
Lululemon Athletica Inc New +1,369,003 +$524M 2.4%
Johnson & Johnson Trimmed −1,992,838 −$288M 0.3%
Robert Half Inc. Added +3,398,257 +$239M 2.6%
YC Yum China Hldgs Inc New +4,217,960 +$203M 0.9%
FE Ferguson Enterprises Inc Added +1,028,440 +$179M 0.8%
MG Match Group Inc New Added +4,611,598 +$151M 0.8%
M& Marsh & Mclennan Cos Inc Trimmed −696,894 −$148M 6.0%
Southern Copper Corp Trimmed −1,605,738 −$146M
Amazon Com Inc Added +603,084 +$132M 4.1%
Aon PLC Trimmed −366,738 −$132M 6.4%

Showing the 10 largest of 106 changes.

Q3 2024

quarter ended September 30, 2024 · filed November 07, 2024

Company Action Shares changed Value of change % of portfolio
Warner Music Group Corp Added +7,923,926 +$248M 1.2%
IE Intercontinental Exchange In Trimmed −1,415,746 −$227M 2.3%
AN Amphenol Corp New Trimmed −2,453,325 −$160M 3.9%
Xp Inc Added +6,712,366 +$120M 2.1%
Robert Half Inc. Added +1,049,005 +$70.7M 1.4%
Icon PLC Added +235,926 +$67.8M 0.8%
TM Tencent Music Entmt Group Added +4,178,636 +$50.4M 0.2%
BB Barrett Business Svcs Inc Added +1,289,147 +$48.4M 0.3%
Aon PLC Trimmed −136,315 −$47.2M 6.7%
Verizon Communications Inc Added +994,036 +$44.6M 1.0%

Showing the 10 largest of 104 changes.

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