William Blair Investment Management
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William Blair Investment Management’s Patterson-UTI PTEN Stock Holding History

William Blair Investment Management’s Portfolio PTEN Stock Details PTEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2019
Q2 		– Sell
-51,241
Closed -$718K – 410
2019
Q1 		$718K Sell
51,241
-5,610
-10% -$73.6K ﹤0.01% 395
2018
Q4 		$588K Buy
56,851
+8,315
+17% +$123K ﹤0.01% 399
2018
Q3 		$830K Buy
48,536
+3,070
+7% +$52.7K ﹤0.01% 409
2018
Q2 		$818K Sell
45,466
-4,858
-10% -$97.4K ﹤0.01% 417
2018
Q1 		$881K Buy
50,324
+14,945
+42% +$312K ﹤0.01% 420
2017
Q4 		$814K Buy
35,379
+3,935
+13% +$81.5K ﹤0.01% 417
2017
Q3 		$658K Buy
31,444
+10,569
+51% +$195K ﹤0.01% 427
2017
Q2 		$421K Sell
20,875
-1,274
-6% -$27.8K ﹤0.01% 444
2017
Q1 		$538K Buy
22,149
+5,948
+37% +$160K ﹤0.01% 420
2016
Q4 		$436K Sell
16,201
-3,344
-17% -$82.6K ﹤0.01% 422
2016
Q3 		$437K Buy
19,545
+362
+2% +$7.27K ﹤0.01% 431
2016
Q2 		$409K Sell
19,183
-4,449
-19% -$83.8K ﹤0.01% 444
2016
Q1 		$416K Sell
23,632
-3,470
-13% -$51.8K ﹤0.01% 430
2015
Q4 		$409K Sell
27,102
-16,057
-37% -$247K ﹤0.01% 431
2015
Q3 		$567K Buy
+43,159
New +$684K ﹤0.01% 991

Other funds holding PTEN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Macquarie Group
Macquarie Group Sydney, NSW 2000, Australia $16.8B AUM 27.39% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

William Blair Investment Management's PTEN Position: Q2 2019 in Review

William Blair Investment Management sold out of Patterson-UTI (PTEN) in Q2 2019, closing a stake of 51,241 shares — an estimated $718K sold.

William Blair Investment Management first reported a position in PTEN in Q3 2015 and held it in 15 quarters. The position peaked at $881K in Q1 2018. 278 funds tracked by Wall St. Rank hold PTEN as of Q2 2019.

  • William Blair Investment Management reported no remaining Patterson-UTI position as of Q2 2019 after selling out during the quarter.
  • William Blair Investment Management sold 51,241 Patterson-UTI shares in Q2 2019, an estimated $718K.
  • William Blair Investment Management first reported a position in Patterson-UTI in Q3 2015 and held it in 15 quarters.
  • William Blair Investment Management's Patterson-UTI position peaked at $881K in Q1 2018.
  • 278 funds tracked by Wall St. Rank held Patterson-UTI as of Q2 2019.

Based on William Blair Investment Management's 13F filing for Q2 2019, filed 9 Aug 2019.