William Blair & Company
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William Blair & Company’s Diamondback Energy FANG Stock Holding History

William Blair & Company’s Portfolio FANG Stock Details FANG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$80.3M Buy
456,635
+11,297
+3% +$2.19M 0.21% 106
2026
Q1 		$88.1M Buy
445,338
+141,152
+46% +$24M 0.25% 92
2025
Q4 		$45.7M Buy
304,186
+84,649
+39% +$12.5M 0.12% 146
2025
Q3 		$31.4M Buy
219,537
+215,691
+5,608% +$30.7M 0.08% 178
2025
Q2 		$528K Sell
3,846
-434
-10% -$60.1K ﹤0.01% 1074
2025
Q1 		$684K Buy
4,280
+382
+10% +$61.6K ﹤0.01% 993
2024
Q4 		$639K Sell
3,898
-1,032
-21% -$182K ﹤0.01% 1022
2024
Q3 		$850K Buy
4,930
+59
+1% +$11.4K ﹤0.01% 950
2024
Q2 		$975K Sell
4,871
-459
-9% -$91.1K ﹤0.01% 886
2024
Q1 		$1.06M Buy
5,330
+640
+14% +$109K ﹤0.01% 849
2023
Q4 		$727K Sell
4,690
-1,259
-21% -$197K ﹤0.01% 960
2023
Q3 		$921K Buy
5,949
+1,319
+28% +$195K ﹤0.01% 871
2023
Q2 		$608K Buy
4,630
+63
+1% +$8.43K ﹤0.01% 993
2023
Q1 		$617K Buy
4,567
+2,014
+79% +$281K ﹤0.01% 972
2022
Q4 		$349K Sell
2,553
-127
-5% -$18.6K ﹤0.01% 1165
2022
Q3 		$323K Buy
2,680
+198
+8% +$24.7K ﹤0.01% 1194
2022
Q2 		$301K Buy
2,482
+985
+66% +$135K ﹤0.01% 1266
2022
Q1 		$205K Buy
+1,497
New +$195K ﹤0.01% 1503
2018
Q4 		– Sell
-2,205
Closed -$298K – 1704
2018
Q3 		$298K Buy
2,205
+122
+6% +$15.6K ﹤0.01% 1145
2018
Q2 		$274K Buy
+2,083
New +$258K ﹤0.01% 1160
2015
Q4 		– Sell
-42,100
Closed -$2.72M – 1235
2015
Q3 		$2.72M Sell
42,100
-612,345
-94% -$41.6M 0.02% 450
2015
Q2 		$49.3M Buy
654,445
+111,395
+21% +$8.85M 0.07% 356
2015
Q1 		$41.7M Buy
543,050
+537,946
+10,540% +$37.3M 0.06% 379
2014
Q4 		$305K Buy
5,104
+1,706
+50% +$109K ﹤0.01% 1847
2014
Q3 		$254K Buy
3,398
+730
+27% +$59.2K ﹤0.01% 1898
2014
Q2 		$237K Sell
2,668
-785
-23% -$59.7K ﹤0.01% 1893
2014
Q1 		$232K Buy
+3,453
New +$199K ﹤0.01% 1851

Other funds holding FANG

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

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

William Blair & Company increased its Diamondback Energy (FANG) stake by 2.5% in Q2 2026, buying an estimated $2.19M and bringing the position to 456,635 shares worth $80.3M. The position accounts for 0.21% of the portfolio, ranked #106.

William Blair & Company first reported a position in FANG in Q1 2014 and has held it in 27 quarters since. The position peaked at $88.1M in Q1 2026. 1,193 funds tracked by Wall St. Rank hold FANG as of Q2 2026.

  • William Blair & Company held 456,635 shares of Diamondback Energy worth $80.3M as of Q2 2026.
  • William Blair & Company bought 11,297 Diamondback Energy shares in Q2 2026, an estimated $2.19M.
  • Diamondback Energy made up 0.21% of William Blair & Company's portfolio in Q2 2026, its #106 holding.
  • William Blair & Company first reported a position in Diamondback Energy in Q1 2014 and has held it in 27 quarters since.
  • William Blair & Company's Diamondback Energy position peaked at $88.1M in Q1 2026.
  • 1,193 funds tracked by Wall St. Rank held Diamondback Energy as of Q2 2026.

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