Parallax Volatility Advisers
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Parallax Volatility Advisers’s Patterson-UTI PTEN Stock Holding History

Parallax Volatility Advisers’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
2025
Q4 		– Sell
-37,992
Closed -$227K – 1795
2025
Q3 		$197K Buy
37,992
+7,479
+25% +$43K ﹤0.01% 1370
2025
Q2 		$181K Buy
+30,513
New +$184K ﹤0.01% 1339
2021
Q3 		– Sell
-5
Closed – – 3331
2021
Q2 		$0 Buy
+5
New +$42 ﹤0.01% 3444
2018
Q2 		– Sell
-7,941
Closed -$139K – 3029
2018
Q1 		$139K Buy
+7,941
New +$166K ﹤0.01% 1312
2015
Q3 		– Sell
-19,090
Closed -$303K – 3826
2015
Q2 		$359K Buy
19,090
+17,663
+1,238% +$366K ﹤0.01% 1777
2015
Q1 		$27K Sell
1,427
-17,838
-93% -$306K ﹤0.01% 3410
2014
Q4 		$320K Buy
19,265
+16,822
+689% +$355K ﹤0.01% 2413
2014
Q3 		$79K Buy
2,443
+1,834
+301% +$62.3K ﹤0.01% 3034
2014
Q2 		$21K Buy
+609
New +$20K ﹤0.01% 3457
2013
Q4 		– Sell
-130
Closed -$3.11K – 3538
2013
Q3 		$3K Sell
130
-533
-80% -$10.9K ﹤0.01% 2880
2013
Q2 		$13K Buy
+663
New +$14.5K ﹤0.01% 2149

Other funds holding PTEN

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
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
SG
Sourcerock Group Denver, Colorado $1.92B AUM 45.54% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
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
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

Parallax Volatility Advisers's PTEN Position: Q4 2025 in Review

Parallax Volatility Advisers sold out of Patterson-UTI (PTEN) in Q4 2025, closing a stake of 37,992 shares — an estimated $227K sold.

Parallax Volatility Advisers first reported a position in PTEN in Q2 2013 and held it in 11 quarters. The position peaked at $359K in Q2 2015. 373 funds tracked by Wall St. Rank hold PTEN as of Q4 2025.

  • Parallax Volatility Advisers reported no remaining Patterson-UTI position as of Q4 2025 after selling out during the quarter.
  • Parallax Volatility Advisers sold 37,992 Patterson-UTI shares in Q4 2025, an estimated $227K.
  • Parallax Volatility Advisers first reported a position in Patterson-UTI in Q2 2013 and held it in 11 quarters.
  • Parallax Volatility Advisers's Patterson-UTI position peaked at $359K in Q2 2015.
  • 373 funds tracked by Wall St. Rank held Patterson-UTI as of Q4 2025.

Based on Parallax Volatility Advisers's 13F filing for Q4 2025, filed 17 Feb 2026.