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Driehaus Capital Management’s Patterson-UTI PTEN Stock Holding History

Driehaus Capital 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
2026
Q2 		– Sell
-2,559,637
Closed -$27.7M – 416
2026
Q1 		$27.7M Buy
+2,559,637
New +$21.9M 0.2% 159
2023
Q1 		– Sell
-468,889
Closed -$7.9M – 430
2022
Q4 		$7.9M Buy
+468,889
New +$7.74M 0.12% 236
2022
Q3 		– Sell
-1,183,204
Closed -$18.6M – 393
2022
Q2 		$18.6M Sell
1,183,204
-391,469
-25% -$6.57M 0.3% 111
2022
Q1 		$24.4M Buy
+1,574,673
New +$19.9M 0.3% 116
2017
Q1 		– Sell
-38,468
Closed -$1.04M – 602
2016
Q4 		$1.04M Buy
+38,468
New +$950K 0.04% 347

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
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
SG
Sourcerock Group Denver, Colorado $1.92B AUM 45.54% 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

Driehaus Capital Management's PTEN Position: Q2 2026 in Review

Driehaus Capital Management sold out of Patterson-UTI (PTEN) in Q2 2026, closing a stake of 2,559,637 shares — an estimated $27.7M sold.

Driehaus Capital Management first reported a position in PTEN in Q4 2016 and held it in 5 quarters. The position peaked at $27.7M in Q1 2026. 437 funds tracked by Wall St. Rank hold PTEN as of Q2 2026.

  • Driehaus Capital Management reported no remaining Patterson-UTI position as of Q2 2026 after selling out during the quarter.
  • Driehaus Capital Management sold 2,559,637 Patterson-UTI shares in Q2 2026, an estimated $27.7M.
  • Driehaus Capital Management first reported a position in Patterson-UTI in Q4 2016 and held it in 5 quarters.
  • Driehaus Capital Management's Patterson-UTI position peaked at $27.7M in Q1 2026.
  • 437 funds tracked by Wall St. Rank held Patterson-UTI as of Q2 2026.

Based on Driehaus Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.