DOSSIER · 13F Holders · Q2 2026
OIS

OIL STS INTL INC

208 institutions still hold OIL STS INTL INC as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 678026105·208 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$328M
visible holders
Holders
208
filers reporting
Concentration
16.67%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q2 2026

208 institutions reported OIS in Q2 2026. BlackRock, Inc. leads at 16.7% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$55M6.8M0.00%Q2 2026
02
First Eagle Investment Management, LLC
CIK 0001325447
$32M4.0M0.03%Q2 2026
03
ACADIAN ASSET MANAGEMENT LLC
CIK 0000916542
$27M2.4M0.04%Q1 2026
04
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$24M3.0M0.00%Q2 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$19M2.4M0.00%Q2 2026
06
D. E. Shaw & Co., Inc.
CIK 0001009207
$18M2.6M0.01%Q4 2025
07
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$18M2.2M0.01%Q2 2026
08
STATE STREET CORP
CIK 0000093751
$16M2.0M0.00%Q2 2026
09
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$14M1.7M0.00%Q2 2026
10
Vanguard Portfolio Management
CIK 0002100121· Index
$13M1.6M0.00%Q2 2026
11
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
CIK 0001164833
$12M1.0M0.04%Q1 2026
12
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$12M1.4M0.00%Q2 2026
13
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$12M1.4M0.01%Q2 2026
14
KENNEDY CAPITAL MANAGEMENT LLC
CIK 0000884589
$10M1.3M0.18%Q2 2026
15
MORGAN STANLEY
CIK 0000895421
$10M1.2M0.00%Q2 2026
16
Qube Research & Technologies Ltd
CIK 0001729829
$9M1.1M0.01%Q2 2026
17
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$9M1.1M0.00%Q2 2026
18
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$7M840K0.12%Q2 2026
19
ALGERT GLOBAL LLC
CIK 0001275218
$7M814K0.08%Q2 2026
20
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$6M497K0.00%Q1 2026
Page 1 of 11
188 more holders available. Log in →
Insiders at OIL STS INTL INC
Potter Robert LHollek Darrell EVanderhider Hallie A.Wright E JosephCastillo-Rhodes DeniseDickerson Lawrence RAutenrieth Matthew EarlHajdik Lloyd A