SEC 13F Intelligence

Managers / Q1 2021 · view latest →

BLAIR WILLIAM & CO/IL

CIK 0000902367 · 150 NORTH RIVERSIDE PLAZA, CHICAGO, IL, 60606-5312 · 3122361600

Reported Value
$26.5B
Q1 2021
Positions
1,856
Filings on Record
30
2019–present window
Filed
May 13, 2021
original filing

Summary

Blair William & Co/Il reported $26.5B in U.S.-listed holdings across 1,856 positions for Q1 2021.

Its largest position, MSFT, represents 3.3% of the portfolio.

Compared with Q4 2020, the fund opened 129 new positions and exited 101.

Portfolio Metrics

Turnover
+6.8%
vs prior filed quarter
Top-10 Concentration
+22.5%
share of reported value
Largest Position
+3.3%
Microsoft
New / Exited
129 / 101
positions this quarter

Methodology: turnover is min(value bought, value sold) ÷ average reported value across the two quarters — value-based, so market moves inflate it slightly versus a share-based measure. Concentration and largest position are shares of the filing’s total reported value, options excluded. New/exited counts compare against the prior filed quarter. All figures derive solely from the fund’s 13F filings.

Reported Value by Quarter

13F Reported Value
Q4 ’18: $13.7BQ4 ’18Q1 ’19: $16.4BQ2 ’19: $17.5BQ3 ’19: $17.4BQ4 ’19: $19.5BQ4 ’19Q1 ’20: $16.0BQ2 ’20: $21.0BQ3 ’20: $23.6BQ4 ’20: $27.3BQ4 ’20Q1 ’21: $26.5BQ2 ’21: $28.9BQ3 ’21: $29.4BQ4 ’21: $31.9BQ4 ’21Q1 ’22: $28.5BQ2 ’22: $22.5BQ3 ’22: $21.8BQ4 ’22: $23.0BQ4 ’22Q1 ’23: $25.0BQ2 ’23: $27.3BQ3 ’23: $26.1BQ4 ’23: $29.3BQ4 ’23Q1 ’24: $31.8BQ2 ’24: $32.4BQ3 ’24: $34.1BQ4 ’24: $34.4BQ4 ’24Q1 ’25: $33.2BQ2 ’25: $36.0BQ3 ’25: $37.6BQ4 ’25: $37.3BQ4 ’25Q1 ’26: $34.9Bfilingsflow.com

Portfolio Composition

By security type
Common Stock: 86.1%ETP: 8.3%Other: 3.6%REIT: 1.2%ADR: 0.7%Other: 0.2%
  • Common Stock · 86.1% · $22.8B
  • ETP · 8.3% · $2.2B
  • Other · 3.6% · $948M
  • REIT · 1.2% · $310M
  • ADR · 0.7% · $180M
  • Other · 0.2% · $51M

Quarter-over-Quarter Changes full breakdown →

vs Q4 2020 (amended baseline)

IssuerMoveShare ΔShares nowValue ΔValue now
OAK STR HEALTH INCNEW+1.09M1.09M+$59M$59M
ALTERYX INCNEW+7.21M7.21M+$7M$7M
MAXMEDIAALPHA INCNEW+138.1K138.1K+$5M$5M
TPLTEXAS PACIFIC LAND CORPORATINEW+2.5K2.5K+$4M$4M
PINNACLE FINL PARTNERS INCNEW+39.8K39.8K+$4M$4M
DRVNDRIVEN BRANDS HLDGS INCNEW+106.2K106.2K+$3M$3M
FGENEURFIBROGEN INCNEW+72.4K72.4K+$3M$3M
APH1EURAPHRIA INCNEW+131.4K131.4K+$2M$2M

Value changes conflate price moves with buying and selling — share changes are the real signal. Share counts are not split-adjusted.

Holdings — Q1 2021

49 positions
Export to Excel
#IssuerClass% PortfolioValue ↓Shares
1MSFTMICROSOFT CORPhistory →COM3.27%$866M3.67M
2AAPLAPPLE INChistory →COM3.13%$830M6.80M
3AMZNAMAZON COM INChistory →COM3.05%$808M261.3K
4IDXXIDEXX LABS INChistory →COM2.57%$680M1.39M
5GOOGALPHABET INCCAP STK CL C · CAP STK CL A2.50%$662M320.4K
6PYPLPAYPAL HLDGS INChistory →COM2.04%$541M2.23M
7VVISA INChistory →COM CL A1.89%$501M2.37M
8VEEVVEEVA SYS INChistory →CL A COM1.83%$485M1.86M
9DC4DEXCOM INChistory →COM1.61%$426M1.19M
10MAMASTERCARD INCORPORATEDhistory →CL A1.61%$425M1.20M
11SBUXSTARBUCKS CORPhistory →COM1.53%$407M3.72M
12ZTSZOETIS INChistory →CL A1.44%$383M2.43M
13DHRDANAHER CORPORATIONhistory →COM1.36%$360M1.60M
14WDAYWORKDAY INChistory →CL A1.31%$347M1.40M
15DOCUDOCUSIGN INChistory →COM1.27%$336M1.66M
16ADBEADOBE SYSTEMS INCORPORATEDhistory →COM1.23%$327M688.6K
17FISVFISERV INChistory →COM1.17%$311M2.61M
18ECLECOLAB INChistory →COM1.09%$288M1.35M
19JPMJPMORGAN CHASE & COhistory →COM0.94%$250M1.64M
20KMXCARMAX INChistory →COM0.93%$246M1.85M
21CRMSALESFORCE COM INChistory →COM0.89%$236M1.12M
22CSGPCOSTAR GROUP INChistory →COM0.81%$216M262.6K
23SPDR S&P 500 ETF TRTR UNIT0.78%$208M524.1K
24ABTABBOTT LABShistory →COM0.77%$203M1.70M
25ICEINTERCONTINENTAL EXCHANGE INhistory →COM0.76%$201M1.80M
26DISDISNEY WALT COhistory →COM0.73%$194M1.05M
27HDHOME DEPOT INChistory →COM0.73%$193M632.4K
28SYKSTRYKER CORPORATIONhistory →COM0.71%$187M768.8K
29FASTFASTENAL COhistory →COM0.68%$180M3.58M
30TYLTYLER TECHNOLOGIES INChistory →COM0.66%$174M409.8K
31INTUINTUIThistory →COM0.65%$173M451.5K
32ACCENTURE PLC IRELANDSHS CLASS A0.65%$171M620.1K
33AMTAMERICAN TOWER CORP NEWhistory →COM0.64%$169M707.6K
34POOLPOOL CORPhistory →COM0.62%$165M479.1K
35METAFACEBOOK INChistory →CL A0.60%$160M543.5K
36CPRTCOPART INChistory →COM0.58%$153M1.41M
37JNJJOHNSON & JOHNSONhistory →COM0.58%$153M928.3K
38COSTCOSTCO WHSL CORP NEWhistory →COM0.57%$152M430.8K
39VRSKVERISK ANALYTICS INChistory →COM0.56%$148M834.9K
40WSOWATSCO INChistory →COM0.56%$147M564.4K
41LULULULULEMON ATHLETICA INChistory →COM0.52%$138M450.5K
42TWLOTWILIO INChistory →CL A0.50%$133M391.3K
43PGRPROGRESSIVE CORPhistory →COM0.50%$133M1.39M
44ABBVABBVIE INChistory →COM0.50%$132M1.22M
45ABMDEURABIOMED INChistory →COM0.49%$129M403.9K
46AON PLCSHS CL A0.48%$128M554.7K
47UNHUNITEDHEALTH GROUP INChistory →COM0.47%$124M333.3K
48OKTAOKTA INChistory →CL A0.46%$121M548.8K
49TDOCTELADOC HEALTH INChistory →COM0.45%$119M652.3K

Filing History

QuarterReported ValuePositionsFiledTypeLinks
Q1 2026$34.9B1,922May 8, 202613F-HRchanges · EDGAR ↗
Q4 2025$37.3B1,920Feb 17, 202613F-HRchanges · EDGAR ↗
Q3 2025$37.6B1,844Nov 12, 202513F-HRchanges · EDGAR ↗
Q2 2025$36.0B1,824Jul 24, 202513F-HRchanges · EDGAR ↗
Q1 2025$33.2B1,801May 9, 202513F-HRchanges · EDGAR ↗
Q4 2024$34.4B1,816Feb 12, 202513F-HRchanges · EDGAR ↗
Q3 2024$34.1B1,821Nov 12, 202413F-HRchanges · EDGAR ↗
Q2 2024$32.4B1,822Aug 12, 202413F-HRchanges · EDGAR ↗
Q1 2024$31.8B1,787May 9, 202413F-HRchanges · EDGAR ↗
Q4 2023$29.3B1,785Feb 12, 202413F-HRchanges · EDGAR ↗
Q3 2023$26.1B1,791Nov 9, 202313F-HRchanges · EDGAR ↗
Q2 2023$27.3B1,809Aug 11, 202313F-HRchanges · EDGAR ↗
Q1 2023$25.0B1,801May 12, 202313F-HRchanges · EDGAR ↗
Q4 2022$23.0B1,814Feb 10, 202313F-HRchanges · EDGAR ↗
Q3 2022$21.8B1,823Nov 9, 202213F-HRchanges · EDGAR ↗
Q2 2022$22.5B1,863Aug 10, 202213F-HRchanges · EDGAR ↗
Q1 2022$28.5B1,910May 13, 202213F-HRchanges · EDGAR ↗
Q4 2021$31.9B1,963Feb 14, 202213F-HRchanges · EDGAR ↗
Q3 2021$29.4B1,879Nov 12, 202113F-HRchanges · EDGAR ↗
Q2 2021$28.9B1,888Aug 12, 202113F-HRchanges · EDGAR ↗
Q1 2021$26.5B1,856May 13, 202113F-HRchanges · EDGAR ↗
Q4 2020$27.3B1,828Feb 9, 202113F-HRchanges · EDGAR ↗
Q3 2020$23.6B1,720Nov 6, 202013F-HRchanges · EDGAR ↗
Q2 2020$21.0B1,681Aug 12, 202013F-HRchanges · EDGAR ↗
Q1 2020$16.0B1,660May 11, 202013F-HRchanges · EDGAR ↗
Q4 2019$19.5B1,728Feb 13, 202013F-HRchanges · EDGAR ↗
Q3 2019$17.4B1,697Nov 12, 201913F-HRchanges · EDGAR ↗
Q2 2019$17.5B1,734Aug 13, 201913F-HRchanges · EDGAR ↗
Q1 2019$16.4B1,705May 14, 201913F-HRchanges · EDGAR ↗
Q4 2018$13.7B1,654Feb 14, 201913F-HRchanges · EDGAR ↗

13F filings are due up to 45 days after quarter end, so holdings shown here lag the fund’s current book. Source: original SEC filing on EDGAR ↗.