State of Wisconsin Investment Board
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State of Wisconsin Investment Board’s Patterson-UTI PTEN Stock Holding History

State of Wisconsin Investment Board’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
2026
Q1 		$6.4M Sell
590,781
-10,509
-2% -$90K 0.01% 891
2025
Q4 		$3.67M Buy
601,290
+54,036
+10% +$323K 0.01% 1131
2025
Q3 		$2.83M Buy
547,254
+554
+0.1% +$3.19K 0.01% 1206
2025
Q2 		$3.24M Buy
546,700
+33,565
+7% +$202K 0.01% 1096
2025
Q1 		$4.22M Buy
513,135
+3,859
+0.8% +$32.4K 0.01% 997
2024
Q4 		$4.21M Buy
509,276
+17,518
+4% +$141K 0.01% 1018
2024
Q3 		$3.76M Sell
491,758
-116,666
-19% -$1.07M 0.01% 1062
2024
Q2 		$6.3M Buy
608,424
+38,938
+7% +$427K 0.02% 838
2024
Q1 		$6.8M Sell
569,486
-18,128
-3% -$201K 0.02% 834
2023
Q4 		$6.35M Buy
587,614
+143,096
+32% +$1.74M 0.02% 871
2023
Q3 		$6.15M Buy
444,518
+252,300
+131% +$3.69M 0.02% 818
2023
Q2 		$2.3M Sell
192,218
-10,847
-5% -$122K 0.01% 1263
2023
Q1 		$2.38M Sell
203,065
-258,466
-56% -$3.77M 0.01% 1246
2022
Q4 		$7.77M Sell
461,531
-13,286
-3% -$219K 0.03% 699
2022
Q3 		$5.55M Sell
474,817
-13,598
-3% -$194K 0.02% 882
2022
Q2 		$7.7M Buy
488,415
+53,915
+12% +$905K 0.02% 769
2022
Q1 		$6.73M Buy
+434,500
New +$5.48M 0.01% 1003
2020
Q2 		– Sell
-26,382
Closed -$62K – 1779
2020
Q1 		$62K Sell
26,382
-870
-3% -$5.63K ﹤0.01% 1674
2019
Q4 		$286K Sell
27,252
-1,350
-5% -$12.2K ﹤0.01% 1550
2019
Q3 		$245K Sell
28,602
-263,657
-90% -$2.59M ﹤0.01% 1481
2019
Q2 		$3.36M Buy
292,259
+252,279
+631% +$3.25M 0.01% 917
2019
Q1 		$561K Sell
39,980
-1,410
-3% -$18.5K ﹤0.01% 1320
2018
Q4 		$428K Sell
41,390
-620
-1% -$9.14K ﹤0.01% 1357
2018
Q3 		$719K Sell
42,010
-750
-2% -$12.9K ﹤0.01% 1309
2018
Q2 		$770K Buy
42,760
+1,043
+3% +$20.9K ﹤0.01% 1259
2018
Q1 		$730K Sell
41,717
-1,036
-2% -$21.6K ﹤0.01% 1216
2017
Q4 		$984K Buy
42,753
+349
+0.8% +$7.23K ﹤0.01% 1122
2017
Q3 		$888K Buy
42,404
+888
+2% +$16.4K ﹤0.01% 1137
2017
Q2 		$838K Buy
41,516
+8,960
+28% +$195K ﹤0.01% 1128
2017
Q1 		$790K Sell
32,556
-46,257
-59% -$1.25M ﹤0.01% 1083
2016
Q4 		$2.12M Sell
78,813
-13,526
-15% -$334K 0.01% 1021
2016
Q3 		$2.07M Sell
92,339
-1,700
-2% -$34.1K 0.01% 1099
2016
Q2 		$2M Sell
94,039
-7,900
-8% -$149K 0.01% 1086
2016
Q1 		$1.8M Sell
101,939
-4,350
-4% -$64.9K 0.01% 1104
2015
Q4 		$1.6M Sell
106,289
-3,260
-3% -$50.1K 0.01% 1151
2015
Q3 		$1.44M Sell
109,549
-3,090
-3% -$49K 0.01% 1194
2015
Q2 		$2.12M Buy
112,639
+2,920
+3% +$60.6K 0.01% 1171
2015
Q1 		$2.06M Sell
109,719
-2,710
-2% -$46.5K 0.01% 1157
2014
Q4 		$1.86M Buy
112,429
+6,140
+6% +$130K 0.01% 1178
2014
Q3 		$3.46M Buy
106,289
+720
+0.7% +$24.5K 0.01% 952
2014
Q2 		$3.69M Buy
105,569
+570
+0.5% +$18.7K 0.01% 949
2014
Q1 		$3.33M Buy
104,999
+150
+0.1% +$4.17K 0.01% 956
2013
Q4 		$2.65M Sell
104,849
-3,150
-3% -$75.4K 0.01% 1041
2013
Q3 		$2.31M Sell
107,999
-8,380
-7% -$172K 0.01% 1067
2013
Q2 		$2.25M Buy
+116,379
New +$2.54M 0.01% 1069

Other funds holding PTEN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
SG
Sourcerock Group Denver, Colorado $2.48B AUM 72.25% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $29.7B AUM 43.33% 1-Year Est. Return

State of Wisconsin Investment Board's PTEN Position: Q1 2026 in Review

State of Wisconsin Investment Board reduced its Patterson-UTI (PTEN) stake by 1.7% in Q1 2026, selling an estimated $90K and leaving 590,781 shares worth $6.4M. The position accounts for 0.01% of the portfolio, ranked #891.

State of Wisconsin Investment Board first reported a position in PTEN in Q2 2013 and has held it in 45 quarters since. The position peaked at $7.77M in Q4 2022. 412 funds tracked by Wall St. Rank hold PTEN as of Q1 2026.

  • State of Wisconsin Investment Board held 590,781 shares of Patterson-UTI worth $6.4M as of Q1 2026.
  • State of Wisconsin Investment Board sold 10,509 Patterson-UTI shares in Q1 2026, an estimated $90K.
  • Patterson-UTI made up 0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #891 holding.
  • State of Wisconsin Investment Board first reported a position in Patterson-UTI in Q2 2013 and has held it in 45 quarters since.
  • State of Wisconsin Investment Board's Patterson-UTI position peaked at $7.77M in Q4 2022.
  • 412 funds tracked by Wall St. Rank held Patterson-UTI as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.