Blair William & Co/Il Top Holdings and 13F Report (2026)

About Blair William & Co/Il

Investment Activity

Blair William & Co/Il has $38.59 billion in total holdings as of September 30, 2026.
Blair William & Co/Il owns shares of 1,971 different stocks, but just 142 companies or ETFs make up 80% of its holdings.
Approximately 4.13% of the portfolio was purchased this quarter.
About 3.76% of the portfolio was sold this quarter.
This quarter, Blair William & Co/Il has purchased 1,998 new stocks and bought additional shares in 667 stocks.
Blair William & Co/Il sold shares of 957 stocks and completely divested from 129 stocks this quarter.

Largest Holdings

Apple: $1,898,743,382
Microsoft: $1,747,127,216
Amazon.com: $1,427,683,418
NVIDIA: $1,234,730,872
Alphabet: $988,733,208

Largest New Holdings this Quarter

30233Q108 - EXXONMOBIL HOLDINGS CORP: $147,697,772 Holding
34631F102 - FORGENT POWER SOLUTIONS INC: $36,015,221 Holding
78392B206 - SK HYNIX INC: $13,888,099 Holding
30609A109 - ONEOK INC NEW: $11,382,168 Holding
25239Y220 - DFA INVT DIMENSIONS GROUP IN: $5,130,872 Holding

Largest Purchases this Quarter

Amphenol: 2,375,783 shares (about $200.28M)
CrowdStrike: 735,210 shares (about $194.65M)
EXXONMOBIL HOLDINGS CORP: 907,513 shares (about $147.70M)
Vanguard Total Stock Market ETF: 127,715 shares (about $47.80M)
SPACE EXPLORATION TECHN CORP: 307,573 shares (about $46.40M)

Largest Sales this Quarter

Meta Platforms: 112,623 shares (about $81.67M)
Palo Alto Networks: 105,540 shares (about $41.93M)
Watsco: 126,008 shares (about $38.14M)
IDEXX Laboratories: 71,238 shares (about $37.20M)
Amazon.com: 144,908 shares (about $36.10M)

Sector Allocation Over Time

Selling

Neutral

Buying

Latest 13F Holdings and Changes Since Previous Quarterly Filing

Issuer Name	Holdings Value	Approximate Purchase/Sale	Change in Shares	Shares Held	% of Portfolio	Sector
AAPL Apple	$1,898,743,382	$9,968,953 ▼	-0.5%	5,701,590	4.9%	Technology
MSFT Microsoft	$1,747,127,216	$18,569,032 ▼	-1.1%	3,406,370	4.5%	Technology
AMZN Amazon.com	$1,427,683,418	$36,103,831 ▼	-2.5%	5,730,216	3.7%	Consumer Discretionary
NVDA NVIDIA	$1,234,730,872	$7,319,808 ▲	0.6%	5,406,475	3.2%	Technology
GOOG Alphabet	$988,733,208	$17,718,823 ▼	-1.8%	2,901,723	2.6%	Communication Services
GOOGL Alphabet	$808,469,516	$18,224,194 ▼	-2.2%	2,349,656	2.1%	Communication Services
JPM JPMorgan Chase & Co.	$750,171,457	$931,617 ▼	-0.1%	2,267,544	1.9%	Finance
V Visa	$649,718,726	$12,024,981 ▼	-1.8%	1,808,139	1.7%	Finance
SPY SPDR S&P 500 ETF Trust	$642,931,154	$3,804,760 ▼	-0.6%	843,045	1.7%	ETF
GE VERNOVA INC	$610,369,547	$16,643,081 ▼	-2.7%	642,163	1.6%	COM
COST Costco Wholesale	$464,761,904	$12,885,853 ▼	-2.7%	510,537	1.2%	Consumer Staples
MA Mastercard	$449,751,226	$14,779,392 ▼	-3.2%	815,550	1.2%	Finance
PANW Palo Alto Networks	$445,376,337	$41,932,113 ▼	-8.6%	1,120,979	1.2%	Technology
IDXX IDEXX Laboratories	$442,461,156	$37,199,785 ▼	-7.8%	847,318	1.1%	Healthcare
RSP Invesco S&P 500 Equal Weight ETF	$441,289,690	$28,912,493 ▲	7.0%	2,121,381	1.1%	ETF
LLY Eli Lilly and Company	$419,737,332	$18,117,542 ▲	4.5%	362,756	1.1%	Healthcare
APH Amphenol	$411,400,192	$200,278,510 ▲	94.9%	4,880,192	1.1%	Technology
META Meta Platforms	$404,837,673	$81,671,975 ▼	-16.8%	558,258	1.0%	Communication Services
EVERPURE INC	$402,744,827	$4,115,123 ▲	1.0%	3,079,560	1.0%	CL A
VEU Vanguard FTSE All-World ex-US ETF	$376,453,681	$4,812,924 ▲	1.3%	4,537,226	1.0%	ETF
IVV iShares Core S&P 500 ETF	$368,286,546	$2,924,015 ▼	-0.8%	480,886	1.0%	ETF
FAST Fastenal	$363,436,467	$3,435,153 ▼	-0.9%	7,337,704	0.9%	Industrials
AVGO Broadcom	$353,186,542	$26,679,555 ▲	8.2%	1,005,685	0.9%	Technology
ARISTA NETWORKS INC	$337,557,238	$10,853,177 ▲	3.3%	1,658,025	0.9%	COM SHS
MU Micron Technology	$334,056,058	$2,389,044 ▼	-0.7%	313,635	0.9%	Technology
ABBV AbbVie	$333,910,162	$2,980,294 ▼	-0.9%	1,276,464	0.9%	Healthcare
VOO Vanguard S&P 500 ETF	$319,138,433	$25,217,622 ▲	8.6%	455,353	0.8%	ETF
VEA Vanguard FTSE Developed Markets ETF	$302,235,864	$753,267 ▼	-0.2%	4,280,355	0.8%	ETF
NOW ServiceNow	$291,020,956	$9,165,480 ▼	-3.1%	2,171,636	0.8%	Technology
QQQ Invesco QQQ	$285,030,083	$19,290,959 ▲	7.3%	385,296	0.7%	ETF
VTV Vanguard Value ETF	$274,102,614	$7,784,713 ▲	2.9%	1,268,524	0.7%	ETF
CRWD CrowdStrike	$266,721,019	$194,646,815 ▲	270.1%	1,007,445	0.7%	Technology
JNJ Johnson & Johnson	$253,521,305	$360,576 ▲	0.1%	957,624	0.7%	Healthcare
VTI Vanguard Total Stock Market ETF	$245,591,426	$47,796,094 ▲	24.2%	656,240	0.6%	ETF
WALMART INC	$238,562,797	$2,573,059 ▲	1.1%	2,295,639	0.6%	COM
BRK.B Berkshire Hathaway	$238,363,454	$2,437,961 ▼	-1.0%	478,690	0.6%	Finance
ECL Ecolab	$231,675,449	$2,896,544 ▼	-1.2%	843,745	0.6%	Materials
AXP American Express	$205,687,484	$1,198,154 ▼	-0.6%	676,381	0.5%	Finance
VEEV Veeva Systems	$204,848,267	$9,479,791 ▼	-4.4%	717,633	0.5%	Healthcare
IWM iShares Russell 2000 ETF	$203,044,939	$8,229,986 ▲	4.2%	730,667	0.5%	ETF
CTAS Cintas	$202,955,805	$4,496,327 ▼	-2.2%	1,040,479	0.5%	Industrials
DHR Danaher	$199,619,134	$15,526,883 ▼	-7.2%	901,012	0.5%	Healthcare
PGR Progressive	$196,276,034	$18,103,959 ▼	-8.4%	946,776	0.5%	Finance
HD Home Depot	$194,542,585	$3,914,868 ▼	-2.0%	683,829	0.5%	Consumer Discretionary
BWXT BWX Technologies	$191,457,816	$21,771,360 ▼	-10.2%	1,397,502	0.5%	Industrials
SYK Stryker	$176,323,576	$12,151,026 ▼	-6.4%	640,269	0.5%	Healthcare
TDG Transdigm Group	$170,248,961	$8,337,121 ▼	-4.7%	157,259	0.4%	Industrials
VIG Vanguard Dividend Appreciation ETF	$168,644,804	$996,000 ▲	0.6%	722,836	0.4%	ETF
ISRG Intuitive Surgical	$165,984,917	$4,292,391 ▲	2.7%	408,196	0.4%	Healthcare
ICE Intercontinental Exchange	$165,293,528	$29,875,563 ▼	-15.3%	1,087,243	0.4%	Finance
UBER Uber Technologies	$156,785,653	$34,671,671 ▼	-18.1%	2,288,508	0.4%	Industrials
CVX Chevron	$149,750,169	$1,261,813 ▲	0.8%	733,315	0.4%	Energy
EXXONMOBIL HOLDINGS CORP	$147,697,772	$147,697,772 ▲	New Holding	907,513	0.4%	COM SHS
AMD Advanced Micro Devices	$146,249,792	$2,355,276 ▲	1.6%	239,064	0.4%	Technology
BA Boeing	$141,193,217	$22,232,426 ▼	-13.6%	758,899	0.4%	Industrials
PWR Quanta Services	$140,943,654	$3,405,948 ▼	-2.4%	219,364	0.4%	Industrials
MRVL Marvell Technology	$139,870,812	$305,427 ▼	-0.2%	529,393	0.4%	Technology
VUG Vanguard Growth ETF	$139,337,765	$1,771,293 ▲	1.3%	1,546,307	0.4%	ETF
MRK Merck & Co., Inc.	$138,294,180	$4,505,047 ▲	3.4%	951,718	0.4%	Healthcare
DXCM DexCom	$133,899,128	$9,831,106 ▼	-6.8%	1,551,734	0.3%	Healthcare
WSO Watsco	$132,582,987	$38,141,340 ▼	-22.3%	438,016	0.3%	Industrials
GLD SPDR Gold Shares	$132,478,646	$5,626,150 ▼	-4.1%	347,859	0.3%	ETF
UNP Union Pacific	$131,983,712	$755,434 ▼	-0.6%	485,002	0.3%	Industrials
GS The Goldman Sachs Group	$130,319,711	$2,228,388 ▼	-1.7%	144,742	0.3%	Finance
IUSV iShares Core S&P U.S. Value ETF	$129,868,530	$1,324,904 ▼	-1.0%	1,177,625	0.3%	ETF
IWF iShares Russell 1000 Growth ETF	$122,222,587	$269,309 ▲	0.2%	975,751	0.3%	ETF
AAON AAON	$120,757,443	$6,149,565 ▼	-4.8%	1,459,128	0.3%	Industrials
ROK Rockwell Automation	$120,290,584	$2,617,208 ▼	-2.1%	276,320	0.3%	Industrials
CW Curtiss-Wright	$119,866,418	$18,928,709 ▲	18.8%	220,416	0.3%	Industrials
PG Procter & Gamble	$118,203,483	$10,822,056 ▼	-8.4%	813,625	0.3%	Consumer Staples
RDVY First Trust Rising Dividend Achievers ETF	$115,331,717	$3,297,104 ▲	2.9%	1,473,135	0.3%	ETF
RBC RBC Bearings	$113,313,228	$5,539,456 ▲	5.1%	226,976	0.3%	Industrials
HEI Heico	$111,750,119	$3,313,457 ▲	3.1%	368,593	0.3%	Industrials
KO Coca-Cola	$110,014,514	$10,251,695 ▼	-8.5%	1,278,050	0.3%	Consumer Staples
LINDE PLC	$108,151,364	$2,116,939 ▼	-1.9%	227,855	0.3%	SHS
TMO Thermo Fisher Scientific	$107,727,904	$305,798 ▼	-0.3%	159,585	0.3%	Healthcare
DE Deere & Company	$105,771,163	$3,189,863 ▲	3.1%	157,503	0.3%	Industrials
JLL Jones Lang LaSalle	$105,492,665	$1,508,963 ▲	1.5%	345,289	0.3%	Real Estate
IUSG iShares Core S&P U.S. Growth ETF	$104,317,930	$7,182,120 ▲	7.4%	538,415	0.3%	ETF
AME AMETEK	$103,581,806	$4,472,020 ▼	-4.1%	418,124	0.3%	Technology
TWLO Twilio	$101,645,460	$8,445,377 ▼	-7.7%	347,553	0.3%	Technology
EFA iShares MSCI EAFE ETF	$101,405,696	$1,945,029 ▼	-1.9%	976,087	0.3%	ETF
IBM International Business Machines	$100,376,712	$6,511,028 ▼	-6.1%	456,403	0.3%	Technology
LYV Live Nation Entertainment	$100,139,441	$6,183,345 ▼	-5.8%	591,491	0.3%	Communication Services
BX Blackstone	$99,411,376	$13,912,161 ▼	-12.3%	886,889	0.3%	Finance
CAT Caterpillar	$98,989,707	$460,530 ▲	0.5%	122,090	0.3%	Industrials
GWRE Guidewire Software	$97,644,915	$5,923,344 ▼	-5.7%	684,843	0.3%	Technology
ABT Abbott Laboratories	$96,695,179	$8,381,970 ▼	-8.0%	978,399	0.3%	Healthcare
HONEYWELL INTL INC	$95,699,864	$147,869 ▼	-0.2%	453,683	0.2%	COM
ITOT iShares Core S&P Total U.S. Stock Market ETF	$94,410,644	$1,862,170 ▲	2.0%	567,781	0.2%	ETF
CSCO Cisco Systems	$94,120,834	$1,814,212 ▲	2.0%	874,485	0.2%	Technology
TSLA Tesla	$90,820,897	$6,110,526 ▼	-6.3%	255,971	0.2%	Consumer Discretionary
SBUX Starbucks	$89,866,527	$990,902 ▲	1.1%	956,434	0.2%	Consumer Discretionary
AXON Axon Enterprise	$89,094,665	$38,268,053 ▲	75.3%	210,865	0.2%	Industrials
WM Waste Management	$87,999,248	$12,192,379 ▼	-12.2%	431,538	0.2%	Industrials
GD General Dynamics	$87,906,553	$4,638,327 ▼	-5.0%	264,914	0.2%	Industrials
ITW Illinois Tool Works	$87,584,173	$4,734,460 ▼	-5.1%	340,424	0.2%	Industrials
AON AON	$87,482,413	$12,322,925 ▼	-12.3%	316,083	0.2%	Finance
TSM Taiwan Semiconductor Manufacturing	$86,706,555	$727,622 ▼	-0.8%	190,067	0.2%	Technology
ORLY O'Reilly Automotive	$86,051,068	$3,971,650 ▼	-4.4%	1,007,506	0.2%	Consumer Discretionary

Showing largest 100 holdings. View all holdings.

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Blair William & Co/Il Top Holdings and 13F Report (2026)

About Blair William & Co/Il

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools

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Blair William & Co/Il Top Holdings and 13F Report (2026)

About Blair William & Co/Il

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Map of 500 Largest Holdings ofBlair William & Co/Il

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

MarketBeat All Access Features

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools