William Blair & Company
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William Blair & Company’s Vanguard Morningstar Mega Cap ETF MGC Stock Holding History

William Blair & Company’s Portfolio MGC Stock Details MGC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$469K Sell
1,986
-777
-28% -$193K ﹤0.01% 1176
2025
Q4 		$694K Buy
2,763
+283
+11% +$70.4K ﹤0.01% 1040
2025
Q3 		$605K Hold
2,480
– – ﹤0.01% 1056
2025
Q2 		$558K Buy
2,480
+105
+4% +$21.7K ﹤0.01% 1058
2025
Q1 		$478K Buy
2,375
+45
+2% +$9.58K ﹤0.01% 1097
2024
Q4 		$495K Buy
2,330
+82
+4% +$17.4K ﹤0.01% 1095
2024
Q3 		$465K Buy
2,248
+93
+4% +$18.6K ﹤0.01% 1138
2024
Q2 		$425K Buy
2,155
+415
+24% +$78.1K ﹤0.01% 1146
2024
Q1 		$325K Hold
1,740
– – ﹤0.01% 1227
2023
Q4 		$295K Sell
1,740
-367
-17% -$58.4K ﹤0.01% 1256
2023
Q3 		$320K Sell
2,107
-90
-4% -$14.2K ﹤0.01% 1201
2023
Q2 		$344K Sell
2,197
-85
-4% -$12.6K ﹤0.01% 1197
2023
Q1 		$327K Hold
2,282
– – ﹤0.01% 1206
2022
Q4 		$302K Sell
2,282
-140
-6% -$18.7K ﹤0.01% 1231
2022
Q3 		$302K Sell
2,422
-100
-4% -$13.9K ﹤0.01% 1229
2022
Q2 		$332K Sell
2,522
-270
-10% -$38.7K ﹤0.01% 1224
2022
Q1 		$444K Buy
2,792
+895
+47% +$140K ﹤0.01% 1204
2021
Q4 		$319K Buy
+1,897
New +$309K ﹤0.01% 1400
2021
Q3 		– Sell
-619
Closed -$94K – 1917
2021
Q2 		$94K Hold
619
– – ﹤0.01% 1621
2021
Q1 		$87K Hold
619
– – ﹤0.01% 1608
2020
Q4 		$83K Hold
619
– – ﹤0.01% 1569
2020
Q3 		$74K Hold
619
– – ﹤0.01% 1461
2020
Q2 		$68K Hold
619
– – ﹤0.01% 1413
2020
Q1 		$56K Hold
619
– – ﹤0.01% 1373
2019
Q4 		$69K Hold
619
– – ﹤0.01% 1455
2019
Q3 		$64K Hold
619
– – ﹤0.01% 1431
2019
Q2 		$63K Hold
619
– – ﹤0.01% 1471
2019
Q1 		$60K Hold
619
– – ﹤0.01% 1450
2018
Q4 		$54K Hold
619
– – ﹤0.01% 1376
2018
Q3 		$62K Hold
619
– – ﹤0.01% 1438
2018
Q2 		$58K Buy
+619
New +$57.6K ﹤0.01% 1402

Other funds holding MGC

Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $374B AUM 17.66% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.37T AUM 24.88% 1-Year Est. Return
NYLIM
New York Life Investment Management New York $11.8B AUM 23.45% 1-Year Est. Return
VIA
Vantagepoint Investment Advisers Washington, District of Columbia $11.8B AUM 9.48% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return
LIM
Leavell Investment Management Mobile, Alabama $2.74B AUM 26.51% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $377B AUM 19.32% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
PA
Procyon Advisors Shelton, Connecticut $2.32B AUM 26.81% 1-Year Est. Return

William Blair & Company's MGC Position: Q1 2026 in Review

William Blair & Company reduced its Vanguard Morningstar Mega Cap ETF (MGC) stake by 28% in Q1 2026, selling an estimated $193K and leaving 1,986 shares worth $469K. The position accounts for ﹤0.01% of the portfolio, ranked #1176.

William Blair & Company first reported a position in MGC in Q2 2018 and has held it in 31 quarters since. The position peaked at $694K in Q4 2025. 506 funds tracked by Wall St. Rank hold MGC as of Q1 2026.

  • William Blair & Company held 1,986 shares of Vanguard Morningstar Mega Cap ETF worth $469K as of Q1 2026.
  • William Blair & Company sold 777 Vanguard Morningstar Mega Cap ETF shares in Q1 2026, an estimated $193K.
  • Vanguard Morningstar Mega Cap ETF made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1176 holding.
  • William Blair & Company first reported a position in Vanguard Morningstar Mega Cap ETF in Q2 2018 and has held it in 31 quarters since.
  • William Blair & Company's Vanguard Morningstar Mega Cap ETF position peaked at $694K in Q4 2025.
  • 506 funds tracked by Wall St. Rank held Vanguard Morningstar Mega Cap ETF as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.