Blair William & Co.

In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 9, 2024), Blair William & Co. reported 1,765 stock positions worth $31.8 billion. Its top holding was Microsoft (MSFT) at 4.8% of the portfolio, followed by Amazon.com (AMZN, 3.4%) and Apple (AAPL, 3.3%). Compared with Q4 2023, it opened 90 new positions, sold out of 85, added to 714 and reduced 716. The biggest buy was Nvidia (NVDA, shares +3%) and the biggest sale Apple (AAPL, shares −2%).

Most Recent 13F
Q2 2026
Location
CHICAGO, IL
CIK
0000902367
Portfolio Value
$31.8B (Q1 2024)
SEC Filing
0001104659-24-059170 ↗ filed May 9, 2024

Holdings Value

0$10.0B$20.0B$30.0B$40.0B Q1 2024: $31.8B $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 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 1,765 stocks · $31.8B

MSFT Microsoft Corp. 4.84% 3,664,660 $1.5B Add +0.0%
AMZN Amazon.com Inc. 3.37% 5,946,441 $1.1B Add +2.0%
AAPL Apple Inc. 3.28% 6,097,120 $1.0B Reduce -1.6%
IDXX Idexx Laboratories Inc. 2.02% 1,189,144 $642.1M Reduce -1.0%
DXCM Dexcom Inc. 1.98% 4,532,687 $628.7M Add +1.4%
V Visa Inc. Class A 1.92% 2,193,399 $612.1M Add +0.0%
GOOG Alphabet Inc. Class C 1.66% 3,464,066 $527.4M Reduce -0.7%
MA Mastercard Inc. Class A 1.58% 1,046,622 $504.0M Reduce -12.0%
JPM JPMorgan Chase & Co. 1.40% 2,218,522 $444.4M Add +0.1%
DHR Danaher Corp. 1.38% 1,761,264 $439.8M Add +2.1%
CSGP Costar Group Inc. 1.34% 4,419,778 $427.0M Add +0.6%
WDAY Workday Inc. Class A 1.32% 1,538,010 $419.5M Reduce -1.1%
COST Costco Wholesale Corp. 1.31% 569,763 $417.4M Reduce -0.7%
ZTS Zoetis Inc. 1.29% 2,433,034 $411.7M Reduce -1.2%
SPY SS SPDR S&P 500 ETF Trust-US 1.21% 734,315 $384.1M Add +0.4%
GOOGL Alphabet Inc. Class A 1.20% 2,534,467 $382.5M Reduce -0.8%
NVDA Nvidia Corp. 1.09% 383,682 $346.7M Add +2.7%
WSO Watsco Inc. 1.07% 792,011 $342.1M Add +2.1%
ADBE Adobe Inc. 1.07% 677,263 $341.7M Reduce -0.5%
POOL Pool Corp. 1.07% 843,650 $340.4M Add +6.0%
FISV Fiserv Inc. 1.06% 2,118,643 $338.6M Add +2.5%
VEEV Veeva Systems Inc. Class A 1.06% 1,459,098 $338.1M Reduce -0.1%
SYK Stryker Corp. 1.04% 926,578 $331.6M Add +5.0%
PGR Progressive Corp. 1.02% 1,568,198 $324.3M Add +4.2%
CPRT Copart Inc. 0.95% 5,235,264 $303.2M Add +0.7%
INTU Intuit Inc. 0.88% 428,955 $278.8M Reduce -1.0%
HD Home Depot Inc. 0.86% 711,908 $273.1M Add +1.8%
LLY Eli Lilly & Co. 0.81% 331,455 $257.9M Add +1.8%
ICE Intercontinental Exchange Inc. 0.81% 1,866,776 $256.6M Add +0.9%
FAST Fastenal Co. 0.79% 3,274,832 $252.6M Reduce -0.0%
UBER Uber Technologies Inc. 0.78% 3,210,584 $247.2M Add +11.7%
CRM Salesforce Inc. 0.76% 807,203 $243.1M Reduce -0.0%
NOW ServiceNow Inc. 0.72% 301,102 $229.6M Reduce -1.9%
ACN Accenture PLC Class A 0.69% 634,504 $219.9M Add +2.1%
TDG Transdigm Group Inc. 0.69% 177,196 $218.2M Add +2.4%
ECL Ecolab Inc. 0.65% 900,002 $207.8M Reduce -1.1%
ABBV Abbvie Inc. 0.65% 1,137,942 $207.2M Add +7.7%
AON Aon PLC Class A 0.64% 611,165 $204.0M Reduce -17.5%
ABT Abbott Laboratories 0.63% 1,774,236 $201.7M Add +2.0%
SBUX Starbucks Corp. 0.62% 2,156,711 $197.1M Reduce -2.3%
TYL Tyler Technologies Inc. 0.62% 463,612 $197.0M Add +0.5%
IVV iShares Core S&P 500 ETF 0.61% 366,691 $192.8M Add +4.3%
UNH Unitedhealth Group Inc. 0.59% 382,828 $189.4M Add +0.9%
CTAS Cintas Corp. 0.58% 269,770 $185.3M Reduce -2.8%
ISRG Intuitive Surgical Inc. 0.56% 448,575 $179.0M Add +13.3%
APH Amphenol Corp. Class A 0.56% 1,536,374 $177.2M Add +0.3%
PANW Palo Alto Networks Inc. 0.56% 623,460 $177.1M Add +0.1%
BRK.B Berkshire Hathaway Inc. Class B 0.52% 395,699 $166.4M Add +4.0%
AXP American Express Co. 0.52% 729,402 $166.1M Add +2.6%
RYAN Ryan Specialty Holdings Inc. 0.48% 2,771,340 $153.8M Add +2.6%
VEA Vanguard Ftse Developed ETF 0.48% 3,050,215 $153.0M Add +2.9%
META Meta Platforms Inc. Class A 0.47% 311,367 $151.2M Add +4.6%
PG The Procter & Gamble Co. 0.47% 928,186 $150.6M Add +1.1%
AMT American Tower Corp. 0.47% 761,357 $150.4M Add +8.1%
WMT Walmart Inc. 0.47% 2,498,095 $150.3M Add +1.6%
BX Blackstone Inc. 0.47% 1,133,753 $148.9M Add +2.1%
JNJ Johnson & Johnson 0.46% 930,766 $147.2M Reduce -1.9%
GWRE Guidewire Software Inc. 0.46% 1,244,416 $145.2M Add +5.4%
SCHW Schwab (charles) Corp. 0.44% 1,917,331 $138.7M Reduce -3.1%
CMG Chipotle Mexican Grill Inc. 0.43% 46,850 $136.2M Reduce -3.8%
AME Ametek Inc. 0.42% 734,371 $134.3M Add +0.2%
UNP Union Pacific Corp. 0.41% 527,098 $129.6M Reduce -0.4%
VIG Vanguard Dividend Apprec ETF 0.39% 674,069 $123.1M Reduce -3.4%
LIN Linde PLC 0.38% 262,782 $122.0M Reduce -1.1%
P Everpure Inc. Class A filed as PURE STORAGE INC 0.38% 2,342,215 $121.8M Reduce -1.7%
VEU Vanguard Ftse All-World Ex-U 0.37% 2,033,358 $119.3M Add +4.4%
ROK Rockwell Automation Inc. 0.37% 405,107 $118.0M Add +2.7%
ITW Illinois Tool Works 0.37% 435,550 $116.9M Add +0.9%
VTV Vanguard Mrngstr Val ETF-Aui 0.36% 701,896 $114.3M Add +4.9%
TREX Trex Company Inc. 0.36% 1,137,225 $113.4M Add +19.4%
LULU Lululemon Athletica Inc. 0.34% 278,868 $108.9M Reduce -7.3%
EVH Evolent Health Inc. Class A 0.34% 3,269,219 $107.2M Add +7.5%
IUSV iShares Core S&P U.S. Value 0.33% 1,167,368 $105.6M Add +10.1%
CVX Chevron Corp. 0.32% 652,380 $102.9M Add +2.5%
KO The Coca-Cola Co. 0.31% 1,627,684 $99.6M Add +3.6%
MCD McDonald's Corp. 0.31% 352,046 $99.3M Add +0.6%
MRK Merck & Co. Inc. 0.31% 738,029 $97.4M Add +0.0%
MDB Mongodb Inc. 0.31% 271,222 $97.3M Add +4.2%
IRTC Irhythm Holdings Inc. 0.30% 832,934 $96.6M Add +3.5%
VRSK Verisk Analytics Inc. 0.30% 407,648 $96.1M Add +1.6%
MCHP Microchip Technology Inc. 0.30% 1,059,298 $95.0M Reduce -2.9%
ROL Rollins Inc. 0.30% 2,043,014 $94.5M Add +1.4%
DE Deere & Co. 0.30% 229,809 $94.4M Reduce -14.9%
QQQ Invesco QQQ Trust Series 1 0.30% 212,297 $94.3M Add +3.1%
LYV Live Nation Entertainment Inc. 0.29% 887,381 $93.9M Add +14.6%
IWM iShares Russell 2000 ETF 0.29% 435,339 $91.6M Add +4.7%
GD General Dynamics Corp. 0.29% 321,848 $90.9M Add +13.9%
VOO Vanguard S&P 500 ETF 0.28% 187,133 $90.0M Add +6.7%
TMO Thermo Fisher Scientific Inc. 0.28% 152,272 $88.5M Reduce -0.6%
ABNB Airbnb Inc. Class A 0.28% 533,639 $88.0M Add +18.4%
PEP Pepsico Inc. 0.28% 502,805 $88.0M Reduce -2.4%
EW Edwards Lifesciences Corp. 0.28% 920,776 $88.0M Reduce -2.6%
NFLX Netflix Inc. 0.27% 139,824 $84.9M Add +10.2%
PWSC Powerschool Holdings Inc. Class A 0.26% 3,946,379 $84.0M Add +17.8%
ORLY O'reilly Automotive Inc. 0.26% 72,350 $81.7M Add +3.0%
SPGI S&P Global Inc. 0.25% 188,935 $80.4M Add +0.9%
MSI Motorola Solutions Inc. 0.25% 220,488 $78.3M Add +2.9%
SPT Sprout Social Inc. Class A 0.24% 1,304,574 $77.9M Reduce -0.5%
LOW Lowe's Cos Inc. 0.24% 305,565 $77.8M Add +1.3%
ALGN Align Technology Inc. 0.24% 236,798 $77.7M Reduce -0.0%

Show all 1,765 holdings

Other holdings (22): bonds, preferreds, convertibles and warrants · $6.4M (not counted above)
SecurityClassShares / PrincipalValueChange
RINGCENTRAL INC (RNG 0 03/01/25) NOTE 3/0 · principal 2,898,000$2.7MReduce -2.2%
CORZZ Core Scientific Inc. - 29 *W EXP 01/23/202 422,195$1.0MNew
CORZW Core Scientific Inc. - 27 *W EXP 01/23/202 506,633$674KNew
WELLS FARGO & COMPANY (WFC 7.5 PERP L) PERP PFD CNV A 342$417KNo change
EVOLENT HEALTH INC (EVH 1.5 10/15/25) NOTE 1.500%10/1 · principal 365,000$415KNo change
BANK OF AMERICA CORP (BAC 7.25 PERP L) 7.25%CNV PFD L 268$320KReduce -10.1%
CHEGG INC (CHGG 0 09/01/26) NOTE 9/0 · principal 350,000$291KReduce -22.2%
LENDINGTREE INC (TREE 0.5 07/15/25) NOTE 0.500% 7/1 · principal 150,000$139KNo change
WAYFAIR INC (W 0.625 10/01/25) NOTE 0.625%10/0 · principal 99,000$92KNo change
PELOTON INTERACTIVE INC (PTON 0 02/15/26) NOTE 2/1 · principal 100,000$84KNo change
PROSPECT CAPITAL CORP (PSEC 6.375 03/01/25) NOTE 6.375% 3/0 · principal 50,000$50KNo change
COINBASE GLOBAL INC (COIN 0.5 06/01/26) NOTE 0.500% 6/0 · principal 45,000$49KNo change
OXY.WS Occidental Petroleum-CW27 *W EXP 08/03/202 1,097$47KReduce -12.1%
CHEGG INC (CHGG 0.125 03/15/25) NOTE 0.125% 3/1 · principal 40,000$37KNo change
HTZWW Hertz Global Hldgs Inc. -CW51 *W EXP 06/30/205 5,602$25KNo change
TELADOC HEALTH INC (TDOC 1.25 06/01/27) NOTE 1.250% 6/0 · principal 25,000$21KNo change
DISH NETWORK CORP (DISH 3.375 08/15/26) NOTE 3.375% 8/1 · principal 25,000$16KNo change
AVPTW Avepoint Inc.-CW24 *W EXP 09/18/202 12,000$11KNew
GCMGW GCM Grosvenor Inc. A -CW25 *W EXP 11/17/202 14,990$7KNo change
PIIIW P3 Health Partne -CW27 *W EXP 11/19/202 7,765$466No change
ISPOW Inspirato -CW30 *W EXP 02/11/202 15,000$152No change
GWHWW Ess Tech Inc. -CW27 *W EXP 10/08/202 333$25Reduce -53.5%

Total filed on the 13F, all lines: $31.8B.

Portfolio Sells Q4 2023 → Q1 2024

AAPL Apple Inc. Reduce -1.6% 3.28% −0.78
ZTS Zoetis Inc. Reduce -1.2% 1.29% −0.36
ADBE Adobe Inc. Reduce -0.5% 1.07% −0.31
IDXX Idexx Laboratories Inc. Reduce -1.0% 2.02% −0.26
SPLK Splunk Inc. Sold out 0.00% −0.23
LULU Lululemon Athletica Inc. Reduce -7.3% 0.34% −0.18
MA Mastercard Inc. Class A Reduce -12.0% 1.58% −0.15
WDAY Workday Inc. Class A Reduce -1.1% 1.32% −0.14
SBUX Starbucks Corp. Reduce -2.3% 0.62% −0.10
AON Aon PLC Class A Reduce -17.5% 0.64% −0.09
FLYW Flywire Corp.-Voting Reduce -44.7% 0.11% −0.09
NEOG Neogen Corp. Reduce -12.8% 0.14% −0.08
BA The Boeing Co. Reduce -17.0% 0.10% −0.08
DV Doubleverify Holdings Inc. Reduce -54.7% 0.05% −0.07
DE Deere & Co. Reduce -14.9% 0.30% −0.07
TSLA Tesla Inc. Reduce -0.4% 0.13% −0.07
INTU Intuit Inc. Reduce -1.0% 0.88% −0.05
JNJ Johnson & Johnson Reduce -1.9% 0.46% −0.04
PTLO Portillo's Inc. Class A Reduce -14.5% 0.10% −0.04
PODD Insulet Corp. Reduce -15.9% 0.06% −0.04
MCHP Microchip Technology Inc. Reduce -2.9% 0.30% −0.04
XMTR Xometry Inc. Class A Reduce -9.6% 0.02% −0.04
BMY Bristol-Myers Squibb Co. Reduce -21.8% 0.12% −0.04
UNP Union Pacific Corp. Reduce -0.4% 0.41% −0.04
IRDM Iridium Communications Inc. Reduce -25.5% 0.03% −0.03
CCOI Cogent Communications Holdin Reduce -17.7% 0.06% −0.03
GILD Gilead Sciences Inc. Reduce -10.9% 0.10% −0.03
TWLO Twilio Inc. Class A Reduce -48.4% 0.02% −0.03
SPT Sprout Social Inc. Class A Reduce -0.5% 0.24% −0.03
SCHW Schwab (charles) Corp. Reduce -3.1% 0.44% −0.03
YETI Yeti Holdings Inc. Reduce -1.7% 0.06% −0.03
GDDY GoDaddy Inc. Class A Reduce -48.0% 0.03% −0.03
NEE Nextera Energy Inc. Reduce -28.2% 0.06% −0.03
RIVN Rivian Automotive Inc. Class A Reduce -81.2% 0.00% −0.03
PYPL PayPal Holdings Inc. Reduce -31.8% 0.06% −0.03
HUM Humana Inc. Reduce -70.5% 0.01% −0.03
PEP Pepsico Inc. Reduce -2.4% 0.28% −0.02
DVAX Dynavax Technologies Corp. Reduce -0.3% 0.09% −0.02
CVS CVS Health Corp. Reduce -10.6% 0.10% −0.02
DOCU Docusign Inc. Reduce -16.1% 0.07% −0.02
FIVE Five Below Reduce -26.0% 0.03% −0.02
DVY iShares Select Dividend ETF Reduce -21.4% 0.07% −0.02
VMI Valmont Industries Reduce -27.4% 0.04% −0.02
HON Honeywell International Inc. Reduce -4.6% 0.12% −0.02
GOOG Alphabet Inc. Class C Reduce -0.7% 1.66% −0.02
BWA Borgwarner Inc. Reduce -94.3% 0.00% −0.02
ETF MANAGERS TR Sold out 0.00% −0.02
VIG Vanguard Dividend Apprec ETF Reduce -3.4% 0.39% −0.02
INTC Intel Corp. Reduce -6.4% 0.06% −0.02
UPS United Parcel Service Class B Reduce -5.8% 0.08% −0.02

Portfolio Buys Q4 2023 → Q1 2024

NVDA Nvidia Corp. Add +2.7% 1.09% +0.46
AMZN Amazon.com Inc. Add +2.0% 3.37% +0.35
PGR Progressive Corp. Add +4.2% 1.02% +0.20
UBER Uber Technologies Inc. Add +11.7% 0.78% +0.17
LLY Eli Lilly & Co. Add +1.8% 0.81% +0.16
MSFT Microsoft Corp. Add +0.0% 4.84% +0.15
SYK Stryker Corp. Add +5.0% 1.04% +0.14
FISV Fiserv Inc. Add +2.5% 1.06% +0.13
META Meta Platforms Inc. Class A Add +4.6% 0.47% +0.12
JPM JPMorgan Chase & Co. Add +0.1% 1.40% +0.11
ISRG Intuitive Surgical Inc. Add +13.3% 0.56% +0.11
ABBV Abbvie Inc. Add +7.7% 0.65% +0.09
TDG Transdigm Group Inc. Add +2.4% 0.69% +0.09
TREX Trex Company Inc. Add +19.4% 0.36% +0.09
RYAN Ryan Specialty Holdings Inc. Add +2.6% 0.48% +0.09
DXCM Dexcom Inc. Add +1.4% 1.98% +0.09
CPRT Copart Inc. Add +0.7% 0.95% +0.08
IOT Samsara Inc. Class A Add +1601.3% 0.09% +0.08
VKTX Viking Therapeutics Inc. Add +412.6% 0.08% +0.07
ALL Allstate Corp. Add +24.6% 0.23% +0.07
AXP American Express Co. Add +2.6% 0.52% +0.07
ABNB Airbnb Inc. Class A Add +18.4% 0.28% +0.07
PRCT Procept Biorobotics Corp. New 0.07% +0.07
BRK.B Berkshire Hathaway Inc. Class B Add +4.0% 0.52% +0.06
NFLX Netflix Inc. Add +10.2% 0.27% +0.06
TOST Toast Inc. Class A Add +128.3% 0.08% +0.05
LYV Live Nation Entertainment Inc. Add +14.6% 0.29% +0.05
CRWD CrowdStrike Holdings Inc. Class A Add +3.6% 0.24% +0.04
APH Amphenol Corp. Class A Add +0.3% 0.56% +0.04
FIS Fidelity National Info Serv Add +65.4% 0.08% +0.04
GD General Dynamics Corp. Add +13.9% 0.29% +0.04
EMR Emerson Electric Co. Add +16.6% 0.16% +0.03
IVV iShares Core S&P 500 ETF Add +4.3% 0.61% +0.03
CSGP Costar Group Inc. Add +0.6% 1.34% +0.03
MRK Merck & Co. Inc. Add +0.0% 0.31% +0.03
HD Home Depot Inc. Add +1.8% 0.86% +0.03
WMT Walmart Inc. Add +1.6% 0.47% +0.03
KMX Carmax Inc. Add +10.7% 0.22% +0.03
ORLY O'reilly Automotive Inc. Add +3.0% 0.26% +0.03
ONT Onterris Inc. Add +30.4% 0.09% +0.03
GS Goldman Sachs Group Inc. Add +18.4% 0.18% +0.03
IUSV iShares Core S&P U.S. Value Add +10.1% 0.33% +0.03
GE General Electric Add +5.8% 0.10% +0.02
SDVY First Trust Smid Cap Rising Add +32.7% 0.11% +0.02
IWF iShares Russell 1000 Growth Add +10.8% 0.20% +0.02
ICLR Icon PLC Add +30.5% 0.08% +0.02
TROW T Rowe Price Group Inc. Add +34.7% 0.08% +0.02
AMD Advanced Micro Devices Add +7.8% 0.13% +0.02
SPY SS SPDR S&P 500 ETF Trust-US Add +0.4% 1.21% +0.02
STKL Sunopta Inc. Add +77.0% 0.04% +0.02

Notes & Other Activity Q4 2023 → Q1 2024

ALTERYX INC (AYX 1 08/01/26) NOTE 1.000% 8/0 · principal Sold out 5,500,000 $5.3Mbefore exit
RINGCENTRAL INC (RNG 0 03/01/25) NOTE 3/0 · principal Reduce -2.2% 2,898,000 $2.7M
CORZZ Core Scientific Inc. - 29 *W EXP 01/23/202 New 422,195 $1.0M
ALTERYX INC (AYX 0.5 08/01/24) NOTE 0.500% 8/0 · principal Sold out 939,000 $911Kbefore exit
CORZW Core Scientific Inc. - 27 *W EXP 01/23/202 New 506,633 $674K
BANK OF AMERICA CORP (BAC 7.25 PERP L) 7.25%CNV PFD L Reduce -10.1% 268 $320K
CHEGG INC (CHGG 0 09/01/26) NOTE 9/0 · principal Reduce -22.2% 350,000 $291K
GREENBRIER COS INC (GBX 2.875 02/01/24) NOTE 2.875% 2/0 · principal Sold out 250,000 $248Kbefore exit
HCI GROUP INC (HCI 4.25 03/01/37) NOTE 4.250% 3/0 · principal Sold out 140,000 $209Kbefore exit
OXY.WS Occidental Petroleum-CW27 *W EXP 08/03/202 Reduce -12.1% 1,097 $47K
WESTERN DIGITAL CORP (WDC 1.5 02/01/24) NOTE 1.500% 2/0 · principal Sold out 25,000 $25Kbefore exit
REVANCE THERAPEUTICS INC (RVNC 1.75 02/15/27) NOTE 1.750% 2/1 · principal Sold out 25,000 $19Kbefore exit
AVPTW Avepoint Inc.-CW24 *W EXP 09/18/202 New 12,000 $11K
GWHWW Ess Tech Inc. -CW27 *W EXP 10/08/202 Reduce -53.5% 333 $25

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