Largest positions
| Issuer | Class | Value | Share |
|---|---|---|---|
| Alphabet Inc.CAP STK CL C | CAP STK CL C | $947,659,680 | 6.4% |
| Amazon Com Inc.COM | COM | $721,716,639 | 4.9% |
| Microsoft Corp.COM | COM | $626,627,346 | 4.3% |
| Shell PLCSPON ADS | SPON ADS | $621,389,432 | 4.2% |
| Nvidia CorporationCOM | COM | $615,992,272 | 4.2% |
| Visa Inc.COM CL A | COM CL A | $593,609,172 | 4.0% |
| Waters Corp.COM | COM | $456,403,803 | 3.1% |
| Cencora Inc.COM | COM | $421,312,792 | 2.9% |
| Amphenol Corp.CL A | CL A | $415,812,811 | 2.8% |
| Aon PLCSHS CL A | SHS CL A | $388,615,965 | 2.6% |
| Aercap Holdings NVSHS | SHS | $352,822,296 | 2.4% |
| Wells Fargo & COCOM | COM | $346,684,386 | 2.4% |
| Northrop Grumman Corp.COM | COM | $339,744,912 | 2.3% |
| American Elec Pwr CO Inc.COM | COM | $312,454,613 | 2.1% |
| Marsh & Mclennan Cos Inc.COM | COM | $311,866,071 | 2.1% |
| Berkshire Hathaway Inc. DelCL A | CL A | $310,772,750 | 2.1% |
| Meta Platforms Inc.CL A | CL A | $307,380,030 | 2.1% |
| JPMORGAN Chase & COCOM | COM | $303,697,429 | 2.1% |
| Southern COCOM | COM | $289,361,192 | 2.0% |
| Tower Semiconductor LtdSHS NEW | SHS NEW | $270,566,735 | 1.8% |
| Intercontinental Exchange INCOM | COM | $250,108,060 | 1.7% |
| Mastercard IncorporatedCL A | CL A | $222,997,930 | 1.5% |
| CME Group Inc.COM | COM | $211,100,672 | 1.4% |
| S&P Global Inc.COM | COM | $174,540,640 | 1.2% |
| Sprott Inc.COM NEW | COM NEW | $148,381,319 | 1.0% |
| Uber Technologies Inc.COM | COM | $143,151,585 | 1.0% |
| Medpace Hldgs Inc.COM | COM | $141,493,208 | 1.0% |
| Martin Marietta Matls Inc.COM | COM | $139,299,002 | 0.9% |
| Mckesson Corp.COM | COM | $136,347,264 | 0.9% |
| Bwx Technologies Inc.COM | COM | $134,259,838 | 0.9% |
| Cdw Corp.COM | COM | $133,520,944 | 0.9% |
| Texas Instrs Inc.COM | COM | $133,291,241 | 0.9% |
| Booking Holdings Inc.COM | COM | $131,983,690 | 0.9% |
| Corpay Inc.COM SHS | COM SHS | $122,562,375 | 0.8% |
| Gallagher Arthur J & COCOM | COM | $117,086,439 | 0.8% |
| Procter & Gamble COCOM | COM | $115,043,333 | 0.8% |
| Fti Consulting Inc.COM | COM | $109,800,701 | 0.7% |
| Abbvie Inc.COM | COM | $108,518,743 | 0.7% |
| Aaon Inc.COM PAR $0.004 | COM PAR $0.004 | $108,487,247 | 0.7% |
| Abbott LaboratoriesCOM | COM | $107,679,071 | 0.7% |
| Airbnb Inc.COM CL A | COM CL A | $106,869,799 | 0.7% |
| Caci Intl Inc.CL A | CL A | $104,103,787 | 0.7% |
| Novanta Inc.COM | COM | $95,652,324 | 0.7% |
| NU Hldgs LtdORD SHS CL A | ORD SHS CL A | $95,602,116 | 0.6% |
| Cognex Corp.COM | COM | $94,520,774 | 0.6% |
| Itt Inc.COM | COM | $83,627,364 | 0.6% |
| Verisk Analytics Inc.COM | COM | $83,353,266 | 0.6% |
| Johnson & JohnsonCOM | COM | $81,899,484 | 0.6% |
| Elevance Health Inc. FormerlyCOM | COM | $72,431,822 | 0.5% |
| Verizon Communications Inc.COM | COM | $70,986,821 | 0.5% |
Alphabet Inc.CAP STK CL C$947,659,680
- Class
- CAP STK CL C
- Share
- 6.4%
Amazon Com Inc.COM$721,716,639
- Class
- COM
- Share
- 4.9%
Microsoft Corp.COM$626,627,346
- Class
- COM
- Share
- 4.3%
Shell PLCSPON ADS$621,389,432
- Class
- SPON ADS
- Share
- 4.2%
Nvidia CorporationCOM$615,992,272
- Class
- COM
- Share
- 4.2%
Visa Inc.COM CL A$593,609,172
- Class
- COM CL A
- Share
- 4.0%
Waters Corp.COM$456,403,803
- Class
- COM
- Share
- 3.1%
Cencora Inc.COM$421,312,792
- Class
- COM
- Share
- 2.9%
Amphenol Corp.CL A$415,812,811
- Class
- CL A
- Share
- 2.8%
Aon PLCSHS CL A$388,615,965
- Class
- SHS CL A
- Share
- 2.6%
Aercap Holdings NVSHS$352,822,296
- Class
- SHS
- Share
- 2.4%
Wells Fargo & COCOM$346,684,386
- Class
- COM
- Share
- 2.4%
Northrop Grumman Corp.COM$339,744,912
- Class
- COM
- Share
- 2.3%
American Elec Pwr CO Inc.COM$312,454,613
- Class
- COM
- Share
- 2.1%
Marsh & Mclennan Cos Inc.COM$311,866,071
- Class
- COM
- Share
- 2.1%
Berkshire Hathaway Inc. DelCL A$310,772,750
- Class
- CL A
- Share
- 2.1%
Meta Platforms Inc.CL A$307,380,030
- Class
- CL A
- Share
- 2.1%
JPMORGAN Chase & COCOM$303,697,429
- Class
- COM
- Share
- 2.1%
Southern COCOM$289,361,192
- Class
- COM
- Share
- 2.0%
Tower Semiconductor LtdSHS NEW$270,566,735
- Class
- SHS NEW
- Share
- 1.8%
Intercontinental Exchange INCOM$250,108,060
- Class
- COM
- Share
- 1.7%
Mastercard IncorporatedCL A$222,997,930
- Class
- CL A
- Share
- 1.5%
CME Group Inc.COM$211,100,672
- Class
- COM
- Share
- 1.4%
S&P Global Inc.COM$174,540,640
- Class
- COM
- Share
- 1.2%
Sprott Inc.COM NEW$148,381,319
- Class
- COM NEW
- Share
- 1.0%
Uber Technologies Inc.COM$143,151,585
- Class
- COM
- Share
- 1.0%
Medpace Hldgs Inc.COM$141,493,208
- Class
- COM
- Share
- 1.0%
Martin Marietta Matls Inc.COM$139,299,002
- Class
- COM
- Share
- 0.9%
Mckesson Corp.COM$136,347,264
- Class
- COM
- Share
- 0.9%
Bwx Technologies Inc.COM$134,259,838
- Class
- COM
- Share
- 0.9%
Cdw Corp.COM$133,520,944
- Class
- COM
- Share
- 0.9%
Texas Instrs Inc.COM$133,291,241
- Class
- COM
- Share
- 0.9%
Booking Holdings Inc.COM$131,983,690
- Class
- COM
- Share
- 0.9%
Corpay Inc.COM SHS$122,562,375
- Class
- COM SHS
- Share
- 0.8%
Gallagher Arthur J & COCOM$117,086,439
- Class
- COM
- Share
- 0.8%
Procter & Gamble COCOM$115,043,333
- Class
- COM
- Share
- 0.8%
Fti Consulting Inc.COM$109,800,701
- Class
- COM
- Share
- 0.7%
Abbvie Inc.COM$108,518,743
- Class
- COM
- Share
- 0.7%
Aaon Inc.COM PAR $0.004$108,487,247
- Class
- COM PAR $0.004
- Share
- 0.7%
Abbott LaboratoriesCOM$107,679,071
- Class
- COM
- Share
- 0.7%
Airbnb Inc.COM CL A$106,869,799
- Class
- COM CL A
- Share
- 0.7%
Caci Intl Inc.CL A$104,103,787
- Class
- CL A
- Share
- 0.7%
Novanta Inc.COM$95,652,324
- Class
- COM
- Share
- 0.7%
NU Hldgs LtdORD SHS CL A$95,602,116
- Class
- ORD SHS CL A
- Share
- 0.6%
Cognex Corp.COM$94,520,774
- Class
- COM
- Share
- 0.6%
Itt Inc.COM$83,627,364
- Class
- COM
- Share
- 0.6%
Verisk Analytics Inc.COM$83,353,266
- Class
- COM
- Share
- 0.6%
Johnson & JohnsonCOM$81,899,484
- Class
- COM
- Share
- 0.6%
Elevance Health Inc. FormerlyCOM$72,431,822
- Class
- COM
- Share
- 0.5%
Verizon Communications Inc.COM$70,986,821
- Class
- COM
- Share
- 0.5%
The share class is shown on a wider screen.
The 50 largest of 142 positions by value, with holdings of the same security combined. The 142 largest are in this firm's machine-readable record. Share counts and quarter-on-quarter changes for each position are on EDGAR. View the full information table on EDGAR
This filing
- Form
- 13F-HR
- CIK
- 1538449
- File number
- 028-14623
- Options
- 0 call, 0 put
- In the 25 largest
- 67.7%
- Prior quarter
- $15,445,748,560 at 31 March 2026
- Positions opened
- 28
- Positions closed
- 12
Common questions
What are Mawer Investment Management’s 13F holdings worth?
$14,708,570,389 across 142 positions for the quarter ended 30 June 2026.
What is Mawer Investment Management’s largest 13F holding?
ALPHABET INC (CAP STK CL C) was the largest position at $947,659,680, or 6.4% of reported 13F value, as of 30 June 2026.
How concentrated is Mawer Investment Management’s 13F portfolio?
The ten largest positions accounted for 39.5% of reported value and the twenty-five largest for 67.7%, across 142 positions as of 30 June 2026.
Does Form 13F show everything Mawer Investment Management manages?
No. Form 13F covers only long positions in exchange-traded securities over which the manager has investment discretion, valued at quarter end. It excludes cash, most bonds, private funds, and any assets the firm does not have discretion over, so it is neither the firm's total assets nor any individual client's portfolio.
How often does Mawer Investment Management file its 13F?
Every quarter. Managers file within 45 days of each quarter's end, so the figures are a snapshot that changes between filings. This page shows the quarter ended 30 June 2026.
Answered from this filing and the prior quarter's.