Filed: 11/12/2025ACC: 0001104659-25-109927
📋 What this filing means
BLAIR WILLIAM & CO/IL filed this quarterly 13F‑HR report disclosing 1844 equity positions with a total reported market value of $37.57B. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
1844
Positions
$37.57B
Total AUM (reported)
266.95M
Total Shares
Allocation by class
COM$24.34B64.8%
CL A$3.11B8.3%
COM CL A$1.16B3.1%
CAP STK CL C$766.20M2.0%
CAP STK CL A$614.06M1.6%
COM NEW$603.67M1.6%
TR UNIT$572.48M1.5%
Portfolio Concentration
Top 3$4.71B12.5%
4–10$5.06B13.5%
11–25$5.72B15.2%
Rest$22.07B58.7%
Top 3 weight
12.5%
Top 10 weight
26.0%
Voting Authority Distribution
Total shares with voting rights: 266.95M
Sole
Full voting authority
214.83M
shares
% of voting shares80.5%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
52.13M
shares
% of voting shares19.5%
Investment Discretion (by position count)
Sole1844
Shared0
Other0
Dominant voting typeSole · 80.5% of voting shares
Institutional Holdings1844
Rows:
MICROSOFT CORP
SOLEShares3.61M
TypeSH
Market value$1.87B
4.97%
Sole
2.78M
Shared
0.00
None
822.48K
APPLE INC
SOLEShares5.99M
TypeSH
Market value$1.53B
4.06%
Sole
4.57M
Shared
0.00
None
1.42M
AMAZON COM INC
SOLEShares6.01M
TypeSH
Market value$1.32B
3.51%
Sole
4.68M
Shared
0.00
None
1.33M
NVIDIA CORPORATION
SOLEShares5.65M
TypeSH
Market value$1.05B
2.80%
Sole
4.46M
Shared
0.00
None
1.19M
ALPHABET INC
SOLEShares3.15M
TypeSH
Market value$766.20M
2.04%
Sole
2.62M
Shared
0.00
None
529.67K
JPMORGAN CHASE & CO.
SOLEShares2.31M
TypeSH
Market value$727.67M
1.94%
Sole
1.58M
Shared
0.00
None
726.53K
VISA INC
SOLEShares1.96M
TypeSH
Market value$669.84M
1.78%
Sole
1.67M
Shared
0.00
None
288.63K
IDEXX LABS INC
SOLEShares1.03M
TypeSH
Market value$659.20M
1.75%
Sole
853.18K
Shared
0.00
None
178.61K
ALPHABET INC
SOLEShares2.53M
TypeSH
Market value$614.06M
1.63%
Sole
1.94M
Shared
0.00
None
587.69K
SPDR S&P 500 ETF TR
SOLEShares859.34K
TypeSH
Market value$572.48M
1.52%
Sole
741.80K
Shared
0.00
None
117.54K
MASTERCARD INCORPORATED
SOLEShares976.60K
TypeSH
Market value$555.50M
1.48%
Sole
765.03K
Shared
0.00
None
211.56K
COSTCO WHSL CORP NEW
SOLEShares551.56K
TypeSH
Market value$510.54M
1.36%
Sole
440.62K
Shared
0.00
None
110.94K
META PLATFORMS INC
SOLEShares678.86K
TypeSH
Market value$498.54M
1.33%
Sole
577.04K
Shared
0.00
None
101.81K
UBER TECHNOLOGIES INC
SOLEShares4.25M
TypeSH
Market value$416.13M
1.11%
Sole
3.18M
Shared
0.00
None
1.07M
GE VERNOVA INC
SOLEShares628.12K
TypeSH
Market value$386.23M
1.03%
Sole
505.10K
Shared
0.00
None
123.02K
VEEVA SYS INC
SOLEShares1.29M
TypeSH
Market value$384.08M
1.02%
Sole
1.05M
Shared
0.00
None
236.94K
SERVICENOW INC
SOLEShares399.08K
TypeSH
Market value$367.27M
0.98%
Sole
328.27K
Shared
0.00
None
70.81K
PROGRESSIVE CORP
SOLEShares1.44M
TypeSH
Market value$355.40M
0.95%
Sole
1.28M
Shared
0.00
None
154.20K
FASTENAL CO
SOLEShares6.97M
TypeSH
Market value$341.59M
0.91%
Sole
4.03M
Shared
0.00
None
2.94M
AMPHENOL CORP NEW
SOLEShares2.75M
TypeSH
Market value$340.50M
0.91%
Sole
2.38M
Shared
0.00
None
375.57K
STRYKER CORPORATION
SOLEShares919.50K
TypeSH
Market value$339.91M
0.90%
Sole
639.81K
Shared
0.00
None
279.69K
WATSCO INC
SOLEShares799.96K
TypeSH
Market value$323.42M
0.86%
Sole
633.87K
Shared
0.00
None
166.08K
HOME DEPOT INC
SOLEShares765.89K
TypeSH
Market value$310.33M
0.83%
Sole
567.63K
Shared
0.00
None
198.26K
ISHARES TR
SOLEShares446.31K
TypeSH
Market value$298.72M
0.80%
Sole
374.18K
Shared
0.00
None
72.13K
BROADCOM INC
SOLEShares889.72K
TypeSH
Market value$293.53M
0.78%
Sole
789.29K
Shared
0.00
None
100.42K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
MICROSOFT CORPSOLE | COM | 3.61M | SH | $1.87B 4.97% | 2.78M | 0.00 | 822.48K |
APPLE INCSOLE | COM | 5.99M | SH | $1.53B 4.06% | 4.57M | 0.00 | 1.42M |
AMAZON COM INCSOLE | COM | 6.01M | SH | $1.32B 3.51% | 4.68M | 0.00 | 1.33M |
NVIDIA CORPORATIONSOLE | COM | 5.65M | SH | $1.05B 2.80% | 4.46M | 0.00 | 1.19M |
ALPHABET INCSOLE | CAP STK CL C | 3.15M | SH | $766.20M 2.04% | 2.62M | 0.00 | 529.67K |
JPMORGAN CHASE & CO.SOLE | COM | 2.31M | SH | $727.67M 1.94% | 1.58M | 0.00 | 726.53K |
VISA INCSOLE | COM CL A | 1.96M | SH | $669.84M 1.78% | 1.67M | 0.00 | 288.63K |
IDEXX LABS INCSOLE | COM | 1.03M | SH | $659.20M 1.75% | 853.18K | 0.00 | 178.61K |
ALPHABET INCSOLE | CAP STK CL A | 2.53M | SH | $614.06M 1.63% | 1.94M | 0.00 | 587.69K |
SPDR S&P 500 ETF TRSOLE | TR UNIT | 859.34K | SH | $572.48M 1.52% | 741.80K | 0.00 | 117.54K |
MASTERCARD INCORPORATEDSOLE | CL A | 976.60K | SH | $555.50M 1.48% | 765.03K | 0.00 | 211.56K |
COSTCO WHSL CORP NEWSOLE | COM | 551.56K | SH | $510.54M 1.36% | 440.62K | 0.00 | 110.94K |
META PLATFORMS INCSOLE | CL A | 678.86K | SH | $498.54M 1.33% | 577.04K | 0.00 | 101.81K |
UBER TECHNOLOGIES INCSOLE | COM | 4.25M | SH | $416.13M 1.11% | 3.18M | 0.00 | 1.07M |
GE VERNOVA INCSOLE | COM | 628.12K | SH | $386.23M 1.03% | 505.10K | 0.00 | 123.02K |
VEEVA SYS INCSOLE | CL A COM | 1.29M | SH | $384.08M 1.02% | 1.05M | 0.00 | 236.94K |
SERVICENOW INCSOLE | COM | 399.08K | SH | $367.27M 0.98% | 328.27K | 0.00 | 70.81K |
PROGRESSIVE CORPSOLE | COM | 1.44M | SH | $355.40M 0.95% | 1.28M | 0.00 | 154.20K |
FASTENAL COSOLE | COM | 6.97M | SH | $341.59M 0.91% | 4.03M | 0.00 | 2.94M |
AMPHENOL CORP NEWSOLE | CL A | 2.75M | SH | $340.50M 0.91% | 2.38M | 0.00 | 375.57K |
STRYKER CORPORATIONSOLE | COM | 919.50K | SH | $339.91M 0.90% | 639.81K | 0.00 | 279.69K |
WATSCO INCSOLE | COM | 799.96K | SH | $323.42M 0.86% | 633.87K | 0.00 | 166.08K |
HOME DEPOT INCSOLE | COM | 765.89K | SH | $310.33M 0.83% | 567.63K | 0.00 | 198.26K |
ISHARES TRSOLE | CORE S&P500 ETF | 446.31K | SH | $298.72M 0.80% | 374.18K | 0.00 | 72.13K |
BROADCOM INCSOLE | COM | 889.72K | SH | $293.53M 0.78% | 789.29K | 0.00 | 100.42K |
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