Position in PTEN
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$27,720,868
+$19,824,778 QoQ
Shares Held
2,559,637
+445.9% QoQ
Ownership
0.674%
of shares outstanding
% of Portfolio
0.20%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2022
4 quarters on record
Voting authority
Sole 77.32303447715438.ToString("F0")%
Shared 0.ToString("F0")%
None 22.67696552284562.ToString("F0")%
Common Shares in PTEN Over Time
Shares Held
Position Value (USD)
Position in Oil & Gas Drilling
Energy · as of Mar 31, 2026Driehaus Capital Management LLC holds $75,528,929 across 2 Oil & Gas Drilling names. PTEN ranks #2 (36.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RIG |
Transocean Ltd.
|
7,210,869 | $47,808,061 | |
| 2 | PTEN |
Patterson Uti Energy Inc
This page
|
2,559,637 | $27,720,868 |
All Filings in PTEN
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $27,720,868 | 2,559,637 | Shares | Sole | 2026-05-15 | |
| 2022-12-31 | $7,896,090 | 468,889 | Shares | Sole | 2023-02-14 | |
| 2022-06-30 | $18,647,295 | 1,183,204 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $24,375,938 | 1,574,673 | Shares | Sole | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||