Blair William & Co.

In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 9, 2025), Blair William & Co. reported 1,780 stock positions worth $33.2 billion. Its top holding was Microsoft (MSFT) at 4.3% of the portfolio, followed by Apple (AAPL, 4.1%) and Amazon.com (AMZN, 3.5%). Compared with Q4 2024, it opened 79 new positions, sold out of 93, added to 630 and reduced 803. The biggest buy was Meta Platforms Class A (META, shares +46%) and the biggest sale Apple (AAPL, shares −2%).

Most Recent 13F
Q2 2026
Location
CHICAGO, IL
CIK
0000902367
Portfolio Value
$33.2B (Q1 2025)
SEC Filing
0001104659-25-046545 ↗ filed May 9, 2025

Holdings Value

0$10.0B$20.0B$30.0B$40.0B Q1 2024: $31.8B Q1 2024 Q2 2024: $32.4B Q2 2024 Q3 2024: $34.0B Q3 2024 Q4 2024: $34.4B Q4 2024 Q1 2025: $33.2B $33.2B Q1 2025 Q2 2025: $36.0B Q2 2025 Q3 2025: $37.6B Q3 2025 Q4 2025: $37.3B Q4 2025 Q1 2026: $34.9B Q1 2026 Q2 2026: $38.4B Q2 2026

Holdings 1,780 stocks · $33.2B

MSFT Microsoft Corp. 4.26% 3,766,202 $1.4B Reduce -1.2%
AAPL Apple Inc. 4.14% 6,174,270 $1.4B Reduce -1.6%
AMZN Amazon.com Inc. 3.53% 6,150,856 $1.2B Reduce -0.2%
V Visa Inc. Class A 2.15% 2,036,756 $713.8M Reduce -2.5%
NVDA Nvidia Corp. 1.76% 5,380,574 $583.1M Add +6.7%
JPM JPMorgan Chase & Co. 1.72% 2,319,136 $568.9M Reduce -2.8%
MA Mastercard Inc. Class A 1.69% 1,020,695 $559.5M Reduce -1.8%
COST Costco Wholesale Corp. 1.57% 548,899 $519.1M Reduce -6.7%
GOOG Alphabet Inc. Class C 1.52% 3,215,678 $502.4M Reduce -1.2%
SPY SS SPDR S&P 500 ETF Trust-US 1.44% 854,383 $477.9M Add +4.2%
IDXX Idexx Laboratories Inc. 1.38% 1,090,770 $458.1M Reduce -1.3%
FISV Fiserv Inc. 1.33% 1,990,011 $439.5M Reduce -4.1%
PGR Progressive Corp. 1.30% 1,523,058 $431.0M Reduce -4.0%
WSO Watsco Inc. 1.25% 814,712 $414.1M Add +5.7%
GOOGL Alphabet Inc. Class A 1.21% 2,584,203 $399.6M Reduce -0.3%
SYK Stryker Corp. 1.04% 926,375 $344.8M Reduce -0.6%
META Meta Platforms Inc. Class A 0.96% 551,158 $317.7M Add +46.1%
ZTS Zoetis Inc. 0.94% 1,892,280 $311.6M Reduce -15.5%
UBER Uber Technologies Inc. 0.93% 4,248,809 $309.6M Add +5.6%
ICE Intercontinental Exchange Inc. 0.92% 1,774,295 $306.1M Reduce -1.4%
VEEV Veeva Systems Inc. Class A 0.91% 1,298,921 $300.9M Add +6.8%
DHR Danaher Corp. 0.89% 1,443,780 $296.0M Reduce -16.0%
CPRT Copart Inc. 0.88% 5,152,588 $291.6M Reduce -0.4%
HD Home Depot Inc. 0.84% 761,909 $279.2M Add +0.8%
LLY Eli Lilly & Co. 0.83% 331,821 $274.1M Reduce -0.8%
ABBV Abbvie Inc. 0.79% 1,243,105 $260.5M Add +3.5%
NOW ServiceNow Inc. 0.78% 326,111 $259.6M Add +5.8%
WDAY Workday Inc. Class A 0.78% 1,110,590 $259.4M Reduce -1.1%
FAST Fastenal Co. 0.77% 3,292,634 $255.3M Add +1.1%
TYL Tyler Technologies Inc. 0.74% 420,874 $244.7M Reduce -3.0%
TDG Transdigm Group Inc. 0.73% 175,221 $242.4M Reduce -1.8%
ISRG Intuitive Surgical Inc. 0.71% 473,416 $234.5M Add +1.0%
IVV iShares Core S&P 500 ETF 0.71% 417,229 $234.4M Add +1.6%
ADBE Adobe Inc. 0.70% 603,925 $231.6M Reduce -2.8%
CSGP Costar Group Inc. 0.69% 2,903,518 $230.0M Reduce -14.4%
ACN Accenture PLC Class A 0.68% 721,493 $225.1M Reduce -1.4%
BRK.B Berkshire Hathaway Inc. Class B 0.68% 420,754 $224.1M Add +0.4%
AON Aon PLC Class A 0.67% 554,750 $221.4M Reduce -1.7%
GWRE Guidewire Software Inc. 0.67% 1,179,878 $221.1M Reduce -2.8%
WMT Walmart Inc. 0.65% 2,444,485 $214.6M Reduce -2.5%
ABT Abbott Laboratories 0.63% 1,579,024 $209.5M Add +0.4%
ECL Ecolab Inc. 0.62% 814,133 $206.4M Reduce -3.5%
RYAN Ryan Specialty Holdings Inc. 0.62% 2,784,916 $205.7M Add +0.7%
CTAS Cintas Corp. 0.62% 998,603 $205.2M Reduce -1.4%
PANW Palo Alto Networks Inc. 0.61% 1,178,648 $201.1M Reduce -9.6%
APH Amphenol Corp. Class A 0.60% 3,027,350 $198.6M Reduce -1.4%
BX Blackstone Inc. 0.57% 1,345,919 $188.1M Reduce -0.5%
AXP American Express Co. 0.56% 689,548 $185.5M Reduce -4.3%
CRM Salesforce Inc. 0.55% 680,179 $182.5M Reduce -4.7%
UNH Unitedhealth Group Inc. 0.53% 338,077 $177.1M Reduce -8.6%
AAON Aaon Inc. 0.51% 2,177,688 $170.1M Add +86.2%
AMT American Tower Corp. 0.51% 777,189 $169.1M Reduce -1.7%
PG The Procter & Gamble Co. 0.51% 990,180 $168.7M Add +0.3%
POOL Pool Corp. 0.50% 517,449 $164.7M Reduce -26.9%
JNJ Johnson & Johnson 0.48% 957,661 $158.8M Reduce -4.6%
INTU Intuit Inc. 0.47% 255,705 $157.0M Reduce -30.0%
P Everpure Inc. Class A filed as PURE STORAGE INC 0.47% 3,541,445 $156.8M Add +2.8%
DXCM Dexcom Inc. 0.46% 2,238,563 $152.9M Add +0.3%
VEA Vanguard Ftse Developed ETF 0.46% 2,971,253 $151.0M Reduce -5.8%
VOO Vanguard S&P 500 ETF 0.45% 291,311 $149.7M Add +14.2%
AVGO Broadcom Inc. 0.44% 865,420 $144.9M Add +12.8%
VTV Vanguard Mrngstr Val ETF-Aui 0.40% 765,752 $132.3M Add +8.0%
NFLX Netflix Inc. 0.39% 137,431 $128.2M Add +0.8%
VIG Vanguard Dividend Apprec ETF 0.38% 641,881 $124.5M Reduce -1.4%
CMG Chipotle Mexican Grill Inc. 0.37% 2,446,596 $122.8M Add +1.8%
UNP Union Pacific Corp. 0.37% 517,397 $122.2M Reduce -7.0%
VEU Vanguard Ftse All-World Ex-U 0.37% 2,001,576 $121.4M Add +2.2%
AME Ametek Inc. 0.37% 705,137 $121.4M Reduce -0.2%
QQQ Invesco QQQ Trust Series 1 0.36% 256,592 $120.3M Add +1.1%
SBUX Starbucks Corp. 0.36% 1,219,915 $119.7M Reduce -5.3%
ROL Rollins Inc. 0.35% 2,173,083 $117.4M Reduce -0.1%
IBM Intl Business Machines Corp. filed as INTERNATIONAL BUSINESS MACHS 0.35% 460,852 $114.6M Reduce -0.4%
VRSK Verisk Analytics Inc. 0.34% 383,598 $114.2M Reduce -2.0%
XOM Exxon Mobil Corp. 0.34% 959,874 $114.2M Add +0.2%
LIN Linde PLC 0.34% 242,007 $112.7M Reduce -0.5%
KO The Coca-Cola Co. 0.33% 1,547,803 $110.9M Reduce -1.2%
ITW Illinois Tool Works 0.33% 444,852 $110.3M Add +4.2%
CVX Chevron Corp. 0.33% 656,428 $109.8M Add +0.8%
GEV GE Vernova Inc. 0.33% 353,202 $107.8M Add +170.5%
MCD McDonald's Corp. 0.32% 341,047 $106.5M Reduce -0.8%
IUSV iShares Core S&P U.S. Value 0.32% 1,138,197 $105.0M Add +5.4%
ORLY O'reilly Automotive Inc. 0.32% 73,053 $104.7M Reduce -1.2%
SPGI S&P Global Inc. 0.32% 205,876 $104.6M Reduce -0.3%
IWM iShares Russell 2000 ETF 0.31% 518,453 $103.4M Reduce -2.1%
QCOM Qualcomm Inc. 0.30% 649,673 $99.8M Add +79.8%
LYV Live Nation Entertainment Inc. 0.29% 726,944 $94.9M Reduce -1.8%
XYZ Block Inc. 0.28% 1,700,889 $92.4M Add +15.3%
GS Goldman Sachs Group Inc. 0.26% 158,372 $86.5M Add +1.6%
MRK Merck & Co. Inc. 0.25% 941,399 $84.5M Reduce -6.7%
MSI Motorola Solutions Inc. 0.25% 192,030 $84.1M Reduce -5.6%
IRTC Irhythm Holdings Inc. 0.25% 789,999 $82.7M Add +30.6%
BA The Boeing Co. 0.25% 477,808 $81.5M Add +26.9%
ALL Allstate Corp. 0.25% 392,916 $81.4M Reduce -5.9%
RBA RB Global Inc. 0.24% 807,433 $81.0M Reduce -0.5%
IJH iShares Core S&P Midcap ETF 0.24% 1,373,121 $80.1M Add +103.7%
ANET Arista Networks Inc. 0.24% 1,032,020 $80.0M Add +23.3%
IWF iShares Russell 1000 Growth 0.24% 220,623 $79.7M Add +1.9%
PEP Pepsico Inc. 0.24% 530,285 $79.5M Reduce -5.1%
GD General Dynamics Corp. 0.24% 290,567 $79.2M Reduce -8.7%
ADP Automatic Data Processing 0.24% 258,819 $79.1M Reduce -1.7%

Show all 1,780 holdings

Other holdings (21): bonds, preferreds, convertibles and warrants · $2.6M (not counted above)
SecurityClassShares / PrincipalValueChange
TELADOC HEALTH INC (TDOC 1.25 06/01/27) NOTE 1.250% 6/0 · principal 525,000$481KNo change
WELLS FARGO & COMPANY (WFC 7.5 PERP L) PERP PFD CNV A 342$411KNo change
EVOLENT HEALTH INC (EVH 1.5 10/15/25) NOTE 1.500%10/1 · principal 365,000$357KNo change
CORZW Core Scientific Inc. - 27 *W EXP 01/23/202 114,509$347KNo change
BANK OF AMERICA CORP (BAC 7.25 PERP L) 7.25%CNV PFD L 268$331KNo change
LENDINGTREE INC (TREE 0.5 07/15/25) NOTE 0.500% 7/1 · principal 125,000$123KReduce -16.7%
WOLF Wolfspeed Inc. (wolf 0.25 02/15/28) NOTE 0.250% 2/1 · principal 500,000$119KNo change
WAYFAIR INC (W 0.625 10/01/25) NOTE 0.625%10/0 · principal 99,000$96KNo change
PELOTON INTERACTIVE INC (PTON 0 02/15/26) NOTE 2/1 · principal 100,000$94KNo change
AVPTW Avepoint Inc.-CW24 *W EXP 09/18/202 10,000$42KNo change
BOEING CO/THE (BA 6 10/15/27) DEP CONV PFD A 562$34KNo change
OXY.WS Occidental Petroleum-CW27 *W EXP 08/03/202 818$23KReduce -43.4%
DISH NETWORK CORP (DISH 3.375 08/15/26) NOTE 3.375% 8/1 · principal 25,000$21KNo change
HOLLEY INC *W EXP 11/30/202 401,489$20KAdd +157.5%
GCMGW GCM Grosvenor Inc. A -CW25 *W EXP 11/17/202 8,395$15KReduce -61.5%
NRG ENERGY INC (NRG 2.75 06/01/48) DBCV 2.750% 6/0 · principal 6,000$14KNo change
HTZWW Hertz Global Hldgs Inc. -CW51 *W EXP 06/30/205 5,602$13KNo change
ALBEMARLE CORP (ALB 7.25 03/01/27) 7.25% DEP SHS A 300$11KNew
SEATW Vivid Seats Inc. -CW26 *W EXP 10/18/202 22,000$5KNo change
CORZZ Core Scientific Inc. - 29 *W EXP 01/23/202 121$869No change
ISPOW Inspirato -CW30 *W EXP 02/11/202 15,000$116No change

Total filed on the 13F, all lines: $33.2B.

Portfolio Sells Q4 2024 → Q1 2025

AAPL Apple Inc. Reduce -1.6% 4.14% −0.44
MSFT Microsoft Corp. Reduce -1.2% 4.26% −0.41
AMZN Amazon.com Inc. Reduce -0.2% 3.53% −0.40
GOOG Alphabet Inc. Class C Reduce -1.2% 1.52% −0.29
DHR Danaher Corp. Reduce -16.0% 0.89% −0.25
GOOGL Alphabet Inc. Class A Reduce -0.3% 1.21% −0.22
POOL Pool Corp. Reduce -26.9% 0.50% −0.21
INTU Intuit Inc. Reduce -30.0% 0.47% −0.19
CRM Salesforce Inc. Reduce -4.7% 0.55% −0.14
BAH Booz Allen Hamilton Holdings Reduce -58.6% 0.07% −0.13
TSLA Tesla Inc. Reduce -6.7% 0.20% −0.12
ZTS Zoetis Inc. Reduce -15.5% 0.94% −0.12
BX Blackstone Inc. Reduce -0.5% 0.57% −0.11
FLYW Flywire Corp.-Voting Reduce -91.8% 0.00% −0.11
ADBE Adobe Inc. Reduce -2.8% 0.70% −0.11
SCHW Schwab (charles) Corp. Reduce -39.6% 0.20% −0.10
ORCL Oracle Corp. Reduce -19.6% 0.21% −0.09
PANW Palo Alto Networks Inc. Reduce -9.6% 0.61% −0.08
APP AppLovin Corp. Class A Reduce -38.5% 0.08% −0.07
MCHP Microchip Technology Inc. Reduce -58.1% 0.04% −0.07
ACN Accenture PLC Class A Reduce -1.4% 0.68% −0.07
NEOG Neogen Corp. Reduce -49.4% 0.04% −0.07
AXP American Express Co. Reduce -4.3% 0.56% −0.06
WDAY Workday Inc. Class A Reduce -1.1% 0.78% −0.06
LULU Lululemon Athletica Inc. Reduce -8.8% 0.14% −0.06
GNRC Generac Holdings Inc. Reduce -6.6% 0.18% −0.05
WST West Pharmaceutical Services Reduce -20.5% 0.06% −0.04
APO Apollo Global Management Inc. Reduce -87.0% 0.01% −0.04
CDW CDW Corp. Reduce -87.3% 0.01% −0.04
KNSL Kinsale Capital Group Inc. Reduce -40.0% 0.07% −0.04
MRK Merck & Co. Inc. Reduce -6.7% 0.25% −0.04
EVH Evolent Health Inc. Class A Reduce -62.4% 0.02% −0.04
WEX Wex Inc. Reduce -52.6% 0.03% −0.04
MKC McCormick & Co.-Non VTG SHRS Reduce -51.6% 0.04% −0.03
ROK Rockwell Automation Inc. Reduce -6.9% 0.23% −0.03
NOVT Novanta Inc. Reduce -2.4% 0.17% −0.03
IWM iShares Russell 2000 ETF Reduce -2.1% 0.31% −0.03
GDDY GoDaddy Inc. Class A Reduce -87.3% 0.00% −0.03
FTAI Ftai Aviation Ltd. Reduce -92.8% 0.00% −0.03
ULTA Ulta Beauty Inc. Reduce -56.3% 0.02% −0.03
ZBRA Zebra Technologies Corp. Class A Reduce -2.0% 0.07% −0.03
FIS Fidelity National Info Serv Reduce -23.2% 0.07% −0.03
IUSG iShares Core S&P U.S. Growth Reduce -13.2% 0.10% −0.02
EXAS Exact Sciences Corp. Reduce -29.5% 0.03% −0.02
EW Edwards Lifesciences Corp. Reduce -20.1% 0.09% −0.02
APH Amphenol Corp. Class A Reduce -1.4% 0.60% −0.02
ONT Onterris Inc. Reduce -48.3% 0.01% −0.02
KFY Korn Ferry Reduce -45.1% 0.03% −0.02
MSI Motorola Solutions Inc. Reduce -5.6% 0.25% −0.02
KMX Carmax Inc. Reduce -14.3% 0.11% −0.02

Portfolio Buys Q4 2024 → Q1 2025

META Meta Platforms Inc. Class A Add +46.1% 0.96% +0.32
UBER Uber Technologies Inc. Add +5.6% 0.93% +0.23
GEV GE Vernova Inc. Add +170.5% 0.33% +0.20
WSO Watsco Inc. Add +5.7% 1.25% +0.19
ABBV Abbvie Inc. Add +3.5% 0.79% +0.16
VEEV Veeva Systems Inc. Class A Add +6.8% 0.91% +0.16
WM Waste Management Inc. Add +192.6% 0.21% +0.15
QCOM Qualcomm Inc. Add +79.8% 0.30% +0.14
BRK.B Berkshire Hathaway Inc. Class B Add +0.4% 0.68% +0.12
JLL Jones Lang Lasalle Inc. Add +285.8% 0.16% +0.12
IJH iShares Core S&P Midcap ETF Add +103.7% 0.24% +0.12
ABT Abbott Laboratories Add +0.4% 0.63% +0.11
AAON Aaon Inc. Add +86.2% 0.51% +0.11
RYAN Ryan Specialty Holdings Inc. Add +0.7% 0.62% +0.10
BWXT BWX Technologies Inc. Add +84.3% 0.23% +0.10
IRTC Irhythm Holdings Inc. Add +30.6% 0.25% +0.09
FAST Fastenal Co. Add +1.1% 0.77% +0.09
CWAN Clearwater Analytics HDS-A Add +44.4% 0.20% +0.06
CVX Chevron Corp. Add +0.8% 0.33% +0.06
DKNG Draftkings Inc. Class A Add +2857.0% 0.06% +0.05
BA The Boeing Co. Add +26.9% 0.25% +0.05
VOO Vanguard S&P 500 ETF Add +14.2% 0.45% +0.05
VTV Vanguard Mrngstr Val ETF-Aui Add +8.0% 0.40% +0.05
HEI Heico Corp. Add +16.8% 0.19% +0.05
CYBR Cyberark Software Ltd./Israel Add +22.4% 0.21% +0.05
XOM Exxon Mobil Corp. Add +0.2% 0.34% +0.04
SPY SS SPDR S&P 500 ETF Trust-US Add +4.2% 1.44% +0.04
RBC RBC Bearings Inc. Add +13.4% 0.20% +0.04
PJAN Innovator U.S. Equity Power Add +2230.0% 0.04% +0.04
CWST Casella Waste Systems Inc. Class A Add +403.4% 0.05% +0.04
VEU Vanguard Ftse All-World Ex-U Add +2.2% 0.37% +0.04
CW Curtiss-Wright Corp. Add +53.3% 0.13% +0.04
NFLX Netflix Inc. Add +0.8% 0.39% +0.03
PCOR Procore Technologies Inc. Add +29.7% 0.21% +0.03
COF Capital One Financial Corp. Add +247.4% 0.04% +0.03
GLD SPDR Gold Shares Add +2.1% 0.15% +0.03
BLK BlackRock Inc. Add +25.1% 0.19% +0.03
BSX Boston Scientific Corp. Add +425.7% 0.04% +0.03
TRGP Targa Resources Corp. Add +231.7% 0.04% +0.03
PG The Procter & Gamble Co. Add +0.3% 0.51% +0.03
CHD Church & Dwight Co. Inc. Add +89.8% 0.05% +0.03
PSN Parsons Corp. Add +1446.8% 0.03% +0.03
AJG Arthur J Gallagher & Co. Add +6.3% 0.10% +0.03
IUSV iShares Core S&P U.S. Value Add +5.4% 0.32% +0.03
GCMG GCM Grosvenor Inc. Class A Add +272.2% 0.03% +0.03
PDEC Innovator U.S. Equity Power Add +34.0% 0.10% +0.03
PTLO Portillo's Inc. Class A Add +32.2% 0.06% +0.02
DE Deere & Co. Add +0.6% 0.18% +0.02
GE General Electric Add +0.7% 0.12% +0.02
PFEB Innovator U.S. Equity Power Add +1338.0% 0.02% +0.02

Notes & Other Activity Q4 2024 → Q1 2025

RINGCENTRAL INC (RNG 0 03/01/25) NOTE 3/0 · principal Sold out 2,523,000 $2.5Mbefore exit
LENDINGTREE INC (TREE 0.5 07/15/25) NOTE 0.500% 7/1 · principal Reduce -16.7% 125,000 $123K
PROSPECT CAPITAL CORP (PSEC 6.375 03/01/25) NOTE 6.375% 3/0 · principal Sold out 50,000 $50Kbefore exit
OXY.WS Occidental Petroleum-CW27 *W EXP 08/03/202 Reduce -43.4% 818 $23K
HOLLEY INC *W EXP 11/30/202 Add +157.5% 401,489 $20K
CHEGG INC (CHGG 0.125 03/15/25) NOTE 0.125% 3/1 · principal Sold out 20,000 $19Kbefore exit
GCMGW GCM Grosvenor Inc. A -CW25 *W EXP 11/17/202 Reduce -61.5% 8,395 $15K
ALBEMARLE CORP (ALB 7.25 03/01/27) 7.25% DEP SHS A New 300 $11K
PIIIW P3 Health Partne -CW27 *W EXP 11/19/202 Sold out 7,765 $92before exit

Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 1,957$38.4BAAPL, AMZN, MSFT, NVDA, GOOG
Q1 2026 1,876$34.9BAAPL, MSFT, AMZN, NVDA, GOOG
Q4 2025 1,845$37.3BMSFT, AAPL, AMZN, NVDA, GOOG
Q3 2025 1,828$37.6BMSFT, AAPL, AMZN, NVDA, GOOG
Q2 2025 1,804$36.0BMSFT, AMZN, AAPL, NVDA, V
Q1 2025 1,780$33.2BMSFT, AAPL, AMZN, V, NVDA
Q4 2024 1,792$34.4BMSFT, AAPL, AMZN, NVDA, V
Q3 2024 1,797$34.0BMSFT, AAPL, AMZN, V, IDXX
Q2 2024 1,781$32.4BMSFT, AAPL, AMZN, GOOG, V
Q1 2024 1,765$31.8BMSFT, AMZN, AAPL, IDXX, DXCM