Filed: 11/4/2025ACC: 0000945621-25-001010
📋 What this filing means
MAWER INVESTMENT MANAGEMENT LTD. filed this quarterly 13F‑HR report disclosing 110 equity positions with a total reported market value of $19.26B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
110
Positions
$19.26B
Total AUM (reported)
108.84M
Total Shares
Allocation by class
COM$11.98B62.2%
CL A$2.41B12.5%
CAP STK CL C$1.02B5.3%
COM CL A$913.21M4.7%
SHS CL A$890.77M4.6%
SPON ADS$517.58M2.7%
SPONSORED ADS$342.40M1.8%
Portfolio Concentration
Top 3$3.38B17.6%
4–10$5.25B27.3%
11–25$5.30B27.5%
Rest$5.33B27.7%
Top 3 weight
17.6%
Top 10 weight
44.8%
Voting Authority Distribution
Total shares with voting rights: 108.84M
Sole
Full voting authority
107.55M
shares
% of voting shares98.8%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
1.28M
shares
% of voting shares1.2%
Investment Discretion (by position count)
Sole78
Shared0
Other32
Dominant voting typeSole · 98.8% of voting shares
Institutional Holdings110
Rows:
MICROSOFT CORP
OTRShares2.65M
TypeSH
Market value$1.37B
7.12%
Sole
2.61M
Shared
0.00
None
38.93K
ALPHABET INC
OTRShares4.20M
TypeSH
Market value$1.02B
5.32%
Sole
4.14M
Shared
0.00
None
63.10K
AMAZON COM INC
OTRShares4.49M
TypeSH
Market value$984.99M
5.11%
Sole
4.42M
Shared
0.00
None
66.30K
MARSH & MCLENNAN COS INC
OTRShares4.57M
TypeSH
Market value$921.52M
4.79%
Sole
4.50M
Shared
0.00
None
71.99K
AON PLC
OTRShares2.50M
TypeSH
Market value$890.77M
4.63%
Sole
2.46M
Shared
0.00
None
41.71K
VISA INC
OTRShares2.35M
TypeSH
Market value$803.19M
4.17%
Sole
2.32M
Shared
0.00
None
32.84K
BOOKING HOLDINGS INC
OTRShares143.23K
TypeSH
Market value$773.36M
4.02%
Sole
140.60K
Shared
0.00
None
2.64K
AMPHENOL CORP NEW
OTRShares5.91M
TypeSH
Market value$731.41M
3.80%
Sole
5.85M
Shared
0.00
None
62.80K
NORTHROP GRUMMAN CORP
OTRShares964.79K
TypeSH
Market value$587.86M
3.05%
Sole
950.09K
Shared
0.00
None
14.70K
FTI CONSULTING INC
OTRShares3.35M
TypeSH
Market value$540.83M
2.81%
Sole
3.30M
Shared
0.00
None
46.17K
BERKSHIRE HATHAWAY INC DEL
SOLEShares711.00
TypeSH
Market value$536.24M
2.78%
Sole
711.00
Shared
0.00
None
0.00
META PLATFORMS INC
OTRShares686.77K
TypeSH
Market value$504.35M
2.62%
Sole
673.57K
Shared
0.00
None
13.20K
WATERS CORP
OTRShares1.55M
TypeSH
Market value$465.01M
2.41%
Sole
1.53M
Shared
0.00
None
17.24K
INTERCONTINENTAL EXCHANGE IN
OTRShares2.47M
TypeSH
Market value$416.54M
2.16%
Sole
2.44M
Shared
0.00
None
31.13K
CME GROUP INC
OTRShares1.50M
TypeSH
Market value$406.03M
2.11%
Sole
1.49M
Shared
0.00
None
16.30K
CDW CORP
OTRShares2.36M
TypeSH
Market value$375.95M
1.95%
Sole
2.32M
Shared
0.00
None
44.75K
JPMORGAN CHASE & CO.
OTRShares1.17M
TypeSH
Market value$370.39M
1.92%
Sole
1.16M
Shared
0.00
None
15.26K
APTARGROUP INC
OTRShares2.76M
TypeSH
Market value$368.77M
1.91%
Sole
2.73M
Shared
0.00
None
27.55K
MEDPACE HLDGS INC
OTRShares646.77K
TypeSH
Market value$332.55M
1.73%
Sole
635.97K
Shared
0.00
None
10.81K
SHELL PLC
SOLEShares4.50M
TypeSH
Market value$321.94M
1.67%
Sole
4.44M
Shared
0.00
None
63.38K
MASTERCARD INCORPORATED
OTRShares512.18K
TypeSH
Market value$291.33M
1.51%
Sole
507.48K
Shared
0.00
None
4.70K
AERCAP HOLDINGS NV
SOLEShares2.09M
TypeSH
Market value$253.34M
1.32%
Sole
2.06M
Shared
0.00
None
29.56K
DEERE & CO
OTRShares502.30K
TypeSH
Market value$229.68M
1.19%
Sole
492.54K
Shared
0.00
None
9.76K
CORPAY INC
OTRShares742.33K
TypeSH
Market value$213.84M
1.11%
Sole
729.67K
Shared
0.00
None
12.66K
OSI SYSTEMS INC
SOLEShares856.38K
TypeSH
Market value$213.44M
1.11%
Sole
856.38K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MICROSOFT CORPOTR | COM | 2.65M | SH | $1.37B 7.12% | 2.61M | 0.00 | 38.93K |
ALPHABET INCOTR | CAP STK CL C | 4.20M | SH | $1.02B 5.32% | 4.14M | 0.00 | 63.10K |
AMAZON COM INCOTR | COM | 4.49M | SH | $984.99M 5.11% | 4.42M | 0.00 | 66.30K |
MARSH & MCLENNAN COS INCOTR | COM | 4.57M | SH | $921.52M 4.79% | 4.50M | 0.00 | 71.99K |
AON PLCOTR | SHS CL A | 2.50M | SH | $890.77M 4.63% | 2.46M | 0.00 | 41.71K |
VISA INCOTR | COM CL A | 2.35M | SH | $803.19M 4.17% | 2.32M | 0.00 | 32.84K |
BOOKING HOLDINGS INCOTR | COM | 143.23K | SH | $773.36M 4.02% | 140.60K | 0.00 | 2.64K |
AMPHENOL CORP NEWOTR | CL A | 5.91M | SH | $731.41M 3.80% | 5.85M | 0.00 | 62.80K |
NORTHROP GRUMMAN CORPOTR | COM | 964.79K | SH | $587.86M 3.05% | 950.09K | 0.00 | 14.70K |
FTI CONSULTING INCOTR | COM | 3.35M | SH | $540.83M 2.81% | 3.30M | 0.00 | 46.17K |
BERKSHIRE HATHAWAY INC DELSOLE | CL A | 711.00 | SH | $536.24M 2.78% | 711.00 | 0.00 | 0.00 |
META PLATFORMS INCOTR | CL A | 686.77K | SH | $504.35M 2.62% | 673.57K | 0.00 | 13.20K |
WATERS CORPOTR | COM | 1.55M | SH | $465.01M 2.41% | 1.53M | 0.00 | 17.24K |
INTERCONTINENTAL EXCHANGE INOTR | COM | 2.47M | SH | $416.54M 2.16% | 2.44M | 0.00 | 31.13K |
CME GROUP INCOTR | COM | 1.50M | SH | $406.03M 2.11% | 1.49M | 0.00 | 16.30K |
CDW CORPOTR | COM | 2.36M | SH | $375.95M 1.95% | 2.32M | 0.00 | 44.75K |
JPMORGAN CHASE & CO.OTR | COM | 1.17M | SH | $370.39M 1.92% | 1.16M | 0.00 | 15.26K |
APTARGROUP INCOTR | COM | 2.76M | SH | $368.77M 1.91% | 2.73M | 0.00 | 27.55K |
MEDPACE HLDGS INCOTR | COM | 646.77K | SH | $332.55M 1.73% | 635.97K | 0.00 | 10.81K |
SHELL PLCSOLE | SPON ADS | 4.50M | SH | $321.94M 1.67% | 4.44M | 0.00 | 63.38K |
MASTERCARD INCORPORATEDOTR | CL A | 512.18K | SH | $291.33M 1.51% | 507.48K | 0.00 | 4.70K |
AERCAP HOLDINGS NVSOLE | SHS | 2.09M | SH | $253.34M 1.32% | 2.06M | 0.00 | 29.56K |
DEERE & COOTR | COM | 502.30K | SH | $229.68M 1.19% | 492.54K | 0.00 | 9.76K |
CORPAY INCOTR | COM SHS | 742.33K | SH | $213.84M 1.11% | 729.67K | 0.00 | 12.66K |
OSI SYSTEMS INCSOLE | COM | 856.38K | SH | $213.44M 1.11% | 856.38K | 0.00 | 0.00 |
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