William Blair Investment Management
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William Blair Investment Management’s Matador Resources MTDR Stock Holding History

William Blair Investment Management’s Portfolio MTDR Stock Details MTDR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$24.5M Sell
492,596
-130,284
-21% -$7.41M 0.07% 220
2026
Q1 		$39.4M Buy
622,880
+206,572
+50% +$10.3M 0.13% 155
2025
Q4 		$17.7M Sell
416,308
-43,598
-9% -$1.83M 0.05% 290
2025
Q3 		$20.7M Sell
459,906
-27,769
-6% -$1.36M 0.05% 281
2025
Q2 		$23.3M Sell
487,675
-41,163
-8% -$1.82M 0.06% 268
2025
Q1 		$27M Sell
528,838
-22,268
-4% -$1.23M 0.08% 241
2024
Q4 		$31M Buy
551,106
+11,256
+2% +$620K 0.08% 247
2024
Q3 		$26.7M Sell
539,850
-16,328
-3% -$920K 0.07% 265
2024
Q2 		$33.1M Sell
556,178
-1,044
-0.2% -$65.6K 0.09% 200
2024
Q1 		$37.2M Sell
557,222
-947
-0.2% -$56.3K 0.1% 196
2023
Q4 		$31.7M Sell
558,169
-8,742
-2% -$512K 0.09% 215
2023
Q3 		$33.7M Buy
+566,911
New +$33M 0.11% 179
2022
Q4 		– Sell
-943,606
Closed -$46.2M – 411
2022
Q3 		$46.2M Sell
943,606
-195,310
-17% -$10.5M 0.18% 122
2022
Q2 		$53.1M Sell
1,138,916
-217,367
-16% -$11.8M 0.2% 126
2022
Q1 		$71.9M Sell
1,356,283
-16,193
-1% -$765K 0.21% 127
2021
Q4 		$50.7M Sell
1,372,476
-739,759
-35% -$30.3M 0.14% 161
2021
Q3 		$80.3M Buy
2,112,235
+2,107,965
+49,367% +$64.7M 0.23% 118
2021
Q2 		$154K Buy
+4,270
New +$124K ﹤0.01% 368

Other funds holding MTDR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $71.3B AUM 56.8% 1-Year Est. Return

William Blair Investment Management's MTDR Position: Q2 2026 in Review

William Blair Investment Management reduced its Matador Resources (MTDR) stake by 21% in Q2 2026, selling an estimated $7.41M and leaving 492,596 shares worth $24.5M. The position accounts for 0.07% of the portfolio, ranked #220.

William Blair Investment Management first reported a position in MTDR in Q2 2021 and has held it in 18 quarters since. The position peaked at $80.3M in Q3 2021. 492 funds tracked by Wall St. Rank hold MTDR as of Q2 2026.

  • William Blair Investment Management held 492,596 shares of Matador Resources worth $24.5M as of Q2 2026.
  • William Blair Investment Management sold 130,284 Matador Resources shares in Q2 2026, an estimated $7.41M.
  • Matador Resources made up 0.07% of William Blair Investment Management's portfolio in Q2 2026, its #220 holding.
  • William Blair Investment Management first reported a position in Matador Resources in Q2 2021 and has held it in 18 quarters since.
  • William Blair Investment Management's Matador Resources position peaked at $80.3M in Q3 2021.
  • 492 funds tracked by Wall St. Rank held Matador Resources as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.