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GREAT LAKES ADVISORS, LLC

CIK
1078013
City
CHICAGO
State / Country
IL

Top Portfolio Positions

680 positions · $10,721,194,756 total · as of Mar 31, 2026
Ticker Company Shares Value (USD) % of Portfolio Open

Portfolio Trend

25 quarters · across all stocks

Holdings in PTEN

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Shares Held

Position Value (USD)

9 quarters on record
Report Date Value (USD) Shares
2026-03-31 $3,486,718 321,950
2025-12-31 $169,735 27,780
2023-12-31 $7,589,354 702,718
2023-09-30 $10,235,704 739,574
2022-09-30 $4,924,603 421,627
2022-03-31 $11,004,592 710,891
2021-12-31 $7,195,175 851,500
2021-09-30 $7,812,666 868,074
2021-06-30 $8,897,622 895,133