Driehaus Capital Management LLC
Position in OIS — Oil States International, Inc
CIK 938206
Chicago, IL
Position in OIS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$15,458,827
New position
Shares Held
1,328,078
first reported quarter
Ownership
2.20%
of shares outstanding
% of Portfolio
0.11%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2026
1 quarter on record
Voting authority
Sole 77%
Shared 0%
None 23%
Position in Oil & Gas Equipment & Services
Energy · as of Jun 30, 2026Driehaus Capital Management LLC holds $437,322,103 across 9 Oil & Gas Equipment & Services names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SEI |
Solaris Energy Infrastructure, Inc.
|
1,584,985 | $127,527,893 | |
| 2 | TS |
Tenaris SA
|
1,001,129 | $55,552,648 | |
| 3 | TTI |
Tetra Technologies Inc
|
4,373,843 | $49,555,641 | |
| 4 | KGS |
Kodiak Gas Services, Inc.
|
655,608 | $49,255,829 | |
| 5 | INVX |
Innovex International, Inc.
|
1,958,268 | $48,565,046 | |
| 6 | TDW |
Tidewater Inc
|
558,352 | $37,202,993 | |
| 7 | FTK |
Flotek Industries Inc/Cn/
|
1,136,326 | $26,726,387 | |
| 8 | WTTR |
Select Water Solutions, Inc.
|
1,161,973 | $23,216,220 |
All Filings in OIS
Export CSV
1 filing row on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $15,458,827 | 1,328,078 | Shares | Sole | 2026-05-15 | |
| No filing history on record for this holder in this stock. | ||||||