William Blair & Company
MGK icon

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

William Blair & Company’s Portfolio MGK Stock Details MGK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$9.38M Sell
106,666
-9,349
-8% -$798K 0.02% 379
2026
Q1 		$8.53M Sell
116,015
-43,855
-27% -$3.44M 0.02% 383
2025
Q4 		$13.2M Buy
159,870
+26,685
+20% +$2.19M 0.04% 304
2025
Q3 		$10.7M Sell
133,185
-9,675
-7% -$743K 0.03% 346
2025
Q2 		$10.5M Buy
142,860
+9,010
+7% +$594K 0.03% 337
2025
Q1 		$8.27M Sell
133,850
-12,500
-9% -$843K 0.02% 367
2024
Q4 		$10.1M Buy
146,350
+8,565
+6% +$576K 0.03% 341
2024
Q3 		$8.87M Sell
137,785
-4,945
-3% -$308K 0.03% 365
2024
Q2 		$8.97M Sell
142,730
-4,560
-3% -$266K 0.03% 342
2024
Q1 		$8.44M Buy
147,290
+9,085
+7% +$501K 0.03% 364
2023
Q4 		$7.17M Sell
138,205
-5,890
-4% -$286K 0.02% 383
2023
Q3 		$6.54M Buy
144,095
+4,665
+3% +$220K 0.03% 383
2023
Q2 		$6.56M Buy
139,430
+1,835
+1% +$79.1K 0.02% 390
2023
Q1 		$5.63M Sell
137,595
-14,300
-9% -$542K 0.02% 418
2022
Q4 		$5.23M Buy
151,895
+29,850
+24% +$1.07M 0.02% 421
2022
Q3 		$4.25M Sell
122,045
-9,105
-7% -$359K 0.02% 437
2022
Q2 		$4.77M Sell
131,150
-14,075
-10% -$566K 0.02% 430
2022
Q1 		$6.84M Buy
145,225
+4,095
+3% +$190K 0.02% 397
2021
Q4 		$7.36M Buy
141,130
+5,275
+4% +$267K 0.02% 405
2021
Q3 		$6.38M Buy
135,855
+215
+0.2% +$10.4K 0.02% 408
2021
Q2 		$6.28M Sell
135,640
-1,085
-0.8% -$47.7K 0.02% 410
2021
Q1 		$5.66M Sell
136,725
-5,000
-4% -$206K 0.02% 428
2020
Q4 		$5.78M Buy
141,725
+6,865
+5% +$266K 0.02% 409
2020
Q3 		$5M Sell
134,860
-15,490
-10% -$558K 0.02% 400
2020
Q2 		$4.92M Sell
150,350
-360
-0.2% -$10.7K 0.02% 384
2020
Q1 		$3.83M Buy
150,710
+2,905
+2% +$83.9K 0.02% 387
2019
Q4 		$4.31M Buy
147,805
+85
+0.1% +$2.35K 0.02% 423
2019
Q3 		$3.92M Buy
147,720
+2,325
+2% +$61.5K 0.02% 423
2019
Q2 		$3.77M Buy
145,395
+2,640
+2% +$67.2K 0.02% 439
2019
Q1 		$3.55M Buy
142,755
+4,630
+3% +$109K 0.02% 432
2018
Q4 		$2.96M Buy
138,125
+300
+0.2% +$6.94K 0.02% 436
2018
Q3 		$3.53M Buy
137,825
+2,215
+2% +$55.3K 0.02% 441
2018
Q2 		$3.23M Buy
135,610
+1,645
+1% +$38.4K 0.02% 458
2018
Q1 		$3.01M Buy
133,965
+5,915
+5% +$137K 0.02% 469
2017
Q4 		$2.85M Buy
128,050
+2,650
+2% +$57.7K 0.02% 482
2017
Q3 		$2.63M Buy
125,400
+545
+0.4% +$11.2K 0.02% 491
2017
Q2 		$2.5M Buy
124,855
+4,960
+4% +$98.2K 0.02% 517
2017
Q1 		$2.29M Hold
119,895
– – 0.02% 512
2016
Q4 		$2.09M Buy
119,895
+905
+0.8% +$15.7K 0.02% 486
2016
Q3 		$2.08M Buy
118,990
+6,870
+6% +$119K 0.02% 488
2016
Q2 		$1.87M Buy
112,120
+13,030
+13% +$217K 0.02% 488
2016
Q1 		$1.65M Hold
99,090
– – 0.02% 499
2015
Q4 		$1.65M Hold
99,090
– – 0.02% 511
2015
Q3 		$1.54M Buy
+99,090
New +$1.64M 0.01% 609

Other funds holding MGK

AssetMark Inc
AssetMark Inc Concord, California $58.2B AUM 22.78% 1-Year Est. Return
CCWM
Cassaday & Co Wealth Management Mclean, Virginia $5.32B AUM 22.63% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $445B AUM 25.58% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
VIA
Vantagepoint Investment Advisers Washington, District of Columbia $13.4B AUM 22.25% 1-Year Est. Return
CAPTRUST Financial Advisors
CAPTRUST Financial Advisors Raleigh, North Carolina $65.5B AUM 24.25% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
MFG
Merit Financial Group Alpharetta, Georgia $16.4B AUM 25.17% 1-Year Est. Return

William Blair & Company's MGK Position: Q2 2026 in Review

William Blair & Company reduced its Vanguard Morningstar Mega Cap Growth ETF (MGK) stake by 8.1% in Q2 2026, selling an estimated $798K and leaving 106,666 shares worth $9.38M. The position accounts for 0.02% of the portfolio, ranked #379.

William Blair & Company first reported a position in MGK in Q3 2015 and has held it in 44 quarters since. The position peaked at $13.2M in Q4 2025. 1,015 funds tracked by Wall St. Rank hold MGK as of Q2 2026.

  • William Blair & Company held 106,666 shares of Vanguard Morningstar Mega Cap Growth ETF worth $9.38M as of Q2 2026.
  • William Blair & Company sold 9,349 Vanguard Morningstar Mega Cap Growth ETF shares in Q2 2026, an estimated $798K.
  • Vanguard Morningstar Mega Cap Growth ETF made up 0.02% of William Blair & Company's portfolio in Q2 2026, its #379 holding.
  • William Blair & Company first reported a position in Vanguard Morningstar Mega Cap Growth ETF in Q3 2015 and has held it in 44 quarters since.
  • William Blair & Company's Vanguard Morningstar Mega Cap Growth ETF position peaked at $13.2M in Q4 2025.
  • 1,015 funds tracked by Wall St. Rank held Vanguard Morningstar Mega Cap Growth ETF as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.