Stock Ownership/OIS

OIL STS INTL INC (OIS): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in OIS · Energy. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
18
13F filers
Aggregate Value
$85.0M
Across holders
Last Price
$8.31
2026-08-24
Sector
Energy
GICS
Quarterly fund activity8 increased8 reduced1 exited
Full exits: RENAISSANCE TECHNOLOGIES LLC
Institutional Holders of OIS
↗
18 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
SHAW D E & CO INC
CIK 0001009207
Hedge Fund2.02M$16.2M19.0%0.0%Reduced+$10.2MQ2 2026
First Eagle Investment Management, LLC
CIK 0001325447
Institutional Manager2.01M$16.1M18.9%0.0%Reduced$-301KQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund1.74M$13.9M16.4%0.0%Reduced+$13.9MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund1.44M$11.6M13.6%0.0%Added+$3.0MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund1.12M$9.0M10.6%0.0%Added+$7.4MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund668K$5.3M6.3%0.0%Reduced$-293KQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund400K$3.2M3.8%0.0%Added+$3.0MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund279K$2.2M2.6%0.0%Reduced$-3.5MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund242K$1.9M2.3%0.0%Reduced$-15.2MQ2 2026
Fisher Asset Management, LLC
CIK 0000850529
Institutional Manager198K$1.6M1.9%0.0%Unchanged+$0Q2 2026
SHAW D E & CO INCReduced
Hedge Fund
$16.2M· 19.0% of total· 0.0% port· 2.02M sh· +$10.2M QoQ· Q2 2026
First Eagle Investment Management, LLCReduced
Institutional Manager
$16.1M· 18.9% of total· 0.0% port· 2.01M sh· $-301K QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$13.9M· 16.4% of total· 0.0% port· 1.74M sh· +$13.9M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$11.6M· 13.6% of total· 0.0% port· 1.44M sh· +$3.0M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$9.0M· 10.6% of total· 0.0% port· 1.12M sh· +$7.4M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCReduced
Hedge Fund
$5.3M· 6.3% of total· 0.0% port· 668K sh· $-293K QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$3.2M· 3.8% of total· 0.0% port· 400K sh· +$3.0M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPReduced
Hedge Fund
$2.2M· 2.6% of total· 0.0% port· 279K sh· $-3.5M QoQ· Q2 2026
MARSHALL WACE, LLPReduced
Hedge Fund
$1.9M· 2.3% of total· 0.0% port· 242K sh· $-15.2M QoQ· Q2 2026
Fisher Asset Management, LLCUnchanged
Institutional Manager
$1.6M· 1.9% of total· 0.0% port· 198K sh· +$0 QoQ· Q2 2026
Point72 Asset Management, L.P.Added
Hedge Fund
$951K· 1.1% of total· 0.0% port· 119K sh· +$388K QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$912K· 1.1% of total· 0.0% port· 114K sh· +$581K QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$714K· 0.8% of total· 0.0% port· 89K sh· +$494K QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$601K· 0.7% of total· 0.0% port· 75K sh· +$531K QoQ· Q2 2026
Magnetar Financial LLCAdded
Hedge Fund
$477K· 0.6% of total· 0.0% port· 60K sh· $-409 QoQ· Q2 2026
Gotham Asset Management, LLCReduced
Hedge Fund
$139K· 0.2% of total· 0.0% port· 17K sh· $-326K QoQ· Q2 2026
CAXTON ASSOCIATES LLPReduced
Hedge Fund
$106K· 0.1% of total· 0.0% port· 13K sh· $-110K QoQ· Q2 2026
Rockefeller Capital Management L.P.Unchanged
Hedge Fund
$56K· 0.1% of total· 0.0% port· 7K sh· $-33K QoQ· Q2 2026
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