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Disclosery

OIS OIL STS INTL INC

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COM (common), issuer CIK 1121484

213 managers (219 13F filers) reported a position in OIS shares at 2026-03-31, 54,264,568 shares in all. 56 filers opened a position and 19 filers sold out during the quarter.

Managers
213
13F filers
219
New
56
Added
76
Reduced
57
Sold out
19
Shares held by filers
54,264,568

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
BlackRock, Inc.in group BlackRock, Inc.6,309,631$73.4M<0.01%-348,18213F-HRTimelineGroup
VANGUARD GROUP INCgroup of 5 filers holding4,563,531$53.1M+4,549,465Timeline
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP3,522,143$41M0.01%+89,45613F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC2,352,385$27.4M0.04%-86,23713F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.2,167,272$25.2M0.02%-481,83613F-HRTimelineGroup
First Eagle Investment Management, LLCin group First Eagle Investment Manage…2,043,709$23.8M0.04%-537,96513F-HR/ATimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC1,848,308$21.5M0.01%+233,17613F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC1,824,715$21.2M0.01%+44,17113F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP1,733,499$20.2M<0.01%+283,81213F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC1,357,790$15.8M<0.01%+35,16313F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY1,350,160$15.7M<0.01%+368,32113F-HRTimelineGroup
Driehaus Capital Management LLC1,328,078$15.5M0.11%new13F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co1,131,609$13.2M<0.01%-15,39413F-HRTimelineGroup
KENNEDY CAPITAL MANAGEMENT LLC1,078,399$12.6M0.27%-374,13513F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP1,073,304$12.5M0.01%+475,58713F-HRTimelineGroup
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC1,001,051$11.7M0.04%-702,85013F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP932,772$10.9M0.01%new13F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding862,663$10M+350,477Timeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC832,905$9.7M0.19%-80,21413F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO821,868$9.52M<0.01%-265,58113F-HR/ATimelineGroup
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPin group ARROWSTREET CAPITAL, LIMITED …721,401$8.4M<0.01%+295,70313F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC704,411$8.2M0.01%+692,02513F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC702,085$8.17M<0.01%+215,95713F-HRTimelineGroup
Trexquant Investment LP551,183$6.42M0.05%+228,71413F-HRTimeline
PANAGORA ASSET MANAGEMENT INC539,920$6.28M0.02%-127,86613F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP461,591$5.37M<0.01%+21,02813F-HRTimelineGroup
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC456,119$5.31M<0.01%-174,62713F-HR/ATimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC454,245$5.29M0.01%+309,13413F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO441,725$5.14M<0.01%+293,27113F-HRTimelineGroup
FEDERATED HERMES, INC.in group FEDERATED HERMES, INC.414,123$4.82M0.01%+23,69713F-HRTimelineGroup
Empowered Funds, LLC402,205$4.68M0.03%new13F-HR/ATimeline
FRANKLIN RESOURCES INCin group Franklin Resources395,901$4.61M<0.01%+255,13813F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…361,554$4.21M0.01%+272,27313F-HRTimeline
Hara Capital LLC336,828$3.92M1.96%-10,01113F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp324,428$3.78M<0.01%-37,02413F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.311,490$3.63M<0.01%+164,78713F-HRTimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…309,464$3.6M<0.01%+16,81213F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\301,566$3.51M<0.01%-6,34313F-HRTimelineGroup
MASSACHUSETTS FINANCIAL SERVICES CO /MA/in group MASSACHUSETTS FINANCIAL SERVI…299,371$3.48M<0.01%-83,19013F-HRTimelineGroup
GENDELL JEFFREY Lin group GENDELL JEFFREY L298,317$3.47M0.05%-1,266,95213F-HRTimelineGroup
FMR LLCin group FMR LLC266,603$3.1M<0.01%+32,67813F-HRTimelineGroup
HRT FINANCIAL LP244,517$2.85M0.01%+222,58413F-HRTimeline
Pacer Advisors, Inc.243,924$2.84M0.01%new13F-HR/ATimeline
STATE BOARD OF ADMINISTRATION OF FLORID…222,793$2.59M<0.01%-160,27113F-HRTimeline
LSV ASSET MANAGEMENT216,400$2.52M0.01%-5,20013F-HRTimeline
Qube Research & Technologies Ltd198,511$2.31M<0.01%-76,63613F-HRTimeline
Fisher Asset Management, LLC198,305$2.31M<0.01%-12,76913F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC193,930$2.26M<0.01%+9,34113F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD160,815$1.87M<0.01%-30,10013F-HRTimeline
Creative Planningin group Creative Planning157,809$1.84M<0.01%+52,46113F-HRTimelineGroup
O'SHAUGHNESSY ASSET MANAGEMENT, LLC157,731$1.84M0.01%new13F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC155,815$1.81M0.01%+119,74513F-HRTimeline
IEQ CAPITAL, LLC154,598$1.8M0.01%+6,14313F-HRTimeline
Informed Momentum Co LLC153,896$1.79M0.21%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/129,982$1.51M<0.01%+13,55613F-HRTimeline
Campbell & CO Investment Adviser LLC129,947$1.51M0.09%-34,76313F-HRTimeline
Nuveen, LLCin group TIAA126,152$1.47M<0.01%-80,62013F-HRTimelineGroup
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC115,896$1.35M<0.01%-282,21213F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd104,723$1.22M0.02%new13F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…99,890$1.16M<0.01%+68,58713F-HRTimelineGroup
Assenagon Asset Management S.A.99,684$1.16M<0.01%013F-HRTimeline
RHUMBLINE ADVISERS95,417$1.11M<0.01%-3,16813F-HRTimeline
Engineers Gate Manager LP93,777$1.09M0.01%+78,64913F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/92,836$1.08M<0.01%-41,09313F-HRTimelineGroup
JACOBS LEVY EQUITY MANAGEMENT, INC92,804$1.08M<0.01%+11,54413F-HRTimeline
STIFEL FINANCIAL CORPin group STIFEL FINANCIAL CORP90,982$1.06M<0.01%-14,49513F-HRTimelineGroup
WEDGE CAPITAL MANAGEMENT L L P/NC90,526$1.05M0.02%-52,29013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS87,951$1.02M<0.01%+68,03013F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd87,927$1.02M0.04%+16,50613F-HRTimelineGroup
CWM, LLCin group CWM, LLC87,926$1.02M<0.01%+11,52313F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC86,237$1M<0.01%+26,66213F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC85,186$992K<0.01%+29,71413F-HRTimelineGroup
PRINCIPAL FINANCIAL GROUP INCin group PRINCIPAL FINANCIAL GROUP INC85,105$991K<0.01%-33,39213F-HRTimelineGroup
JB CAPITAL PARTNERS LP85,000$989K0.17%013F-HRTimeline
MARTINGALE ASSET MANAGEMENT L P76,328$888K0.02%new13F-HRTimeline
Counterpoint Mutual Funds LLC73,084$851K0.13%new13F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.70,343$819K<0.01%new13F-HRTimelineGroup
Integrated Quantitative Investments LLC64,681$753K0.14%new13F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC64,113$746K<0.01%-10,01213F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC62,995$733K<0.01%-125,60913F-HRTimelineGroup
ExodusPoint Capital Management, LP62,017$722K0.01%new13F-HRTimeline
Cambria Investment Management, L.P.58,712$683K0.04%new13F-HRTimeline
Gotham Asset Management, LLC57,963$675K<0.01%new13F-HRTimeline
Hillsdale Investment Management Inc.57,500$669K0.02%+3,90013F-HRTimeline
Magnetar Financial LLCin group Magnetar Financial LLC52,722$614K0.01%new13F-HRTimelineGroup
STRS OHIO51,900$604K<0.01%-34,80013F-HRTimeline
State of Wyoming51,607$601K0.07%+4,28113F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA49,536$576K<0.01%-29,08313F-HRTimelineGroup
Harvest Investment Services, LLC48,320$562K0.1%new13F-HRTimeline
WEALTH ENHANCEMENT ADVISORY SERVICES, L…49,998$560K<0.01%+8,18713F-HRTimeline
Cerity Partners LLCin group Cerity Partners LLC45,498$530K<0.01%+15,54113F-HRTimelineGroup
Quantinno Capital Management LP45,227$526K<0.01%+6,13513F-HRTimeline
Inspire Investing, LLCin group Inspire Investing, LLC44,309$516K0.03%new13F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC42,482$494K<0.01%-85,76613F-HRTimelineGroup
Man Group plcin group Man Group plc41,311$481K<0.01%-24,81413F-HRTimelineGroup
MERCER GLOBAL ADVISORS INC /ADV40,774$475K<0.01%+8,97313F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC36,532$425K0.01%new13F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC36,112$420K<0.01%+17,38613F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.61,390$416K<0.01%-3,10013F-HRTimeline
SG Americas Securities, LLC34,668$404K<0.01%-4,13913F-HRTimeline
Dynamic Technology Lab Private Ltd32,383$377K0.06%+17,13513F-HRTimeline
Abacus Wealth Partners, LLC31,295$364K0.03%+73813F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…30,731$358K<0.01%+5,18213F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd30,656$357K0.01%new13F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP30,565$356K0.02%new13F-HRTimeline
ZACKS INVESTMENT MANAGEMENT30,262$352K<0.01%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC30,085$350K<0.01%new13F-HRTimelineGroup
Brendel Financial Advisors LLC29,456$343K0.17%new13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC29,260$341K<0.01%+17,91213F-HRTimelineGroup
Legato Capital Management LLC29,146$339K0.03%new13F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…28,648$333K<0.01%+28,59713F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC28,500$332K<0.01%-24,90013F-HRTimeline
BANK OF NOVA SCOTIAin group BANK OF NOVA SCOTIA28,300$329K<0.01%new13F-HRTimelineGroup
EP Wealth Advisors, LLC28,225$329K<0.01%+1,27513F-HRTimeline
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…27,381$319K<0.01%-52613F-HRTimelineGroup
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/27,247$317K<0.01%new13F-HRTimelineGroup
DIVERSIFIED TRUST CO26,999$314K0.01%+4,30713F-HRTimeline
CAXTON ASSOCIATES LLP26,941$314K0.01%new13F-HRTimeline
Graham Capital Management, L.P.26,827$312K0.01%-20,25813F-HRTimeline
Focus Partners Wealthgroup of 2 filers holding26,607$310K+14,263Timeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…26,449$308K<0.01%+26913F-HRTimelineGroup
Polymer Capital Management (US) LLC24,555$286K0.04%-25,55513F-HRTimeline
Verdad Advisers, LP23,415$273K0.31%new13F-HRTimeline
LAZARD ASSET MANAGEMENT LLCin group LAZARD ASSET MANAGEMENT LLC23,039$268K<0.01%new13F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN22,545$262K<0.01%-40,82913F-HR/ATimelineGroup
Cornerstone Investment Partners, LLC21,597$251K0.01%new13F-HRTimeline
DRW Securities, LLC21,183$247K0.01%new13F-HRTimeline
INTECH INVESTMENT MANAGEMENT LLC20,363$237K<0.01%-10,33513F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC19,777$230K<0.01%+32313F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC19,326$225K<0.01%new13F-HRTimelineGroup
BRIGHTON JONES LLC18,738$218K<0.01%new13F-HR/ATimeline
SCOTIA CAPITAL INC.18,244$212K<0.01%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND17,832$208K<0.01%+8,10013F-HRTimeline
INCEPTIONR LLC17,805$207K0.05%new13F-HRTimeline
EntryPoint Capital, LLC17,753$207K0.06%new13F-HRTimeline
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…17,231$201K<0.01%-45513F-HRTimeline
CAPTRUST FINANCIAL ADVISORS16,885$197K<0.01%+2,62313F-HRTimeline
Centiva Capital, LP15,911$185K0.01%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …15,473$180K<0.01%-1,59313F-HRTimelineGroup
One Wealth Advisors, LLC15,397$179K0.02%new13F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…14,885$173K<0.01%-9,32413F-HRTimelineGroup
Police & Firemen's Retirement System of…14,813$172K<0.01%013F-HRTimeline
Ethic Inc.14,252$166K<0.01%+81113F-HRTimeline
ALGERT GLOBAL LLC14,210$165K<0.01%-13,49613F-HR/ATimeline
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC13,758$163K<0.01%-80,44313F-HRTimelineGroup
PROFUND ADVISORS LLC13,852$161K0.01%new13F-HRTimeline
PharVision Advisers, LLC12,212$142K1.44%new13F-HR/ATimeline
MIRABELLA FINANCIAL SERVICES LLP12,038$140K0.01%new13F-HRTimeline
NEUBERGER BERMAN GROUP LLCin group NEUBERGER BERMAN GROUP LLC11,626$135K<0.01%+98813F-HRTimelineGroup
Nierenberg Investment Management Compan…11,555$134K0.07%-100,00013F-HRTimeline
Pallas Capital Advisors LLC10,680$124K<0.01%-4113F-HRTimeline
M&T Bank Corpin group M&T Bank Corp10,257$119K<0.01%+21413F-HR/ATimelineGroup
Entropy Technologies, LP10,207$119K0.01%new13F-HRTimeline
Essential Partners LLC9,410$110K0.04%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…9,248$108K<0.01%+1,50213F-HR/ATimelineGroup
Arax Advisory Partners8,854$103K<0.01%+1,25613F-HRTimeline
Quantbot Technologies LP8,745$102K<0.01%-35,67813F-HRTimeline
Kemnay Advisory Services Inc.8,432$98.1K0.02%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…7,077$82.4K<0.01%+4313F-HRTimelineGroup
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…6,969$81.1K<0.01%+5,56913F-HRTimelineGroup
Optiver Holding B.V.in group Optiver Holding B.V.4,980$58K<0.01%+4,50013F-HR/ATimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…4,942$57.5K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc4,825$56.2K<0.01%013F-HRTimelineGroup
LOM Asset Management Ltd4,769$55.5K0.02%013F-HRTimeline
Allworth Financial LP4,434$51.6K<0.01%+1,69013F-HRTimeline
Caitong International Asset Management …4,397$51.2K0.01%new13F-HRTimeline
USA FINANCIAL FORMULAS4,338$50.5K0.01%new13F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…4,178$48.6K<0.01%-40613F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…3,053$35.5K<0.01%-41913F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\2,585$30.1K<0.01%013F-HRTimelineGroup
GAMMA Investing LLC2,564$29.8K<0.01%+39213F-HRTimeline
QUADRANT CAPITAL GROUP LLC2,062$24K<0.01%+42913F-HR/ATimeline
Ares Financial Consulting, LLC2,158$24K0.02%new13F-HRTimeline
ST GERMAIN D J CO INCin group ST GERMAIN D J CO INC1,980$23K<0.01%013F-HRTimelineGroup
Sterling Capital Management LLC1,880$21.9K<0.01%-1,37113F-HRTimeline
MCGUIRE CAPITAL ADVISORS INC1,499$17.4K0.01%013F-HRTimeline
MAI Capital Management1,488$17.3K<0.01%+1,40413F-HRTimeline
Farther Finance Advisors, LLC1,325$14.7K<0.01%+8413F-HRTimeline
BARROW HANLEY MEWHINNEY & STRAUSS LLC1,158$13.5K<0.01%013F-HRTimeline
Covestor Ltd1,100$13K0.01%new13F-HRTimeline
True Wealth Design, LLC1,050$12.2K<0.01%013F-HRTimeline
IFP Advisors, Inc1,040$12.1K<0.01%013F-HRTimeline
Smartleaf Asset Management LLC1,015$11.8K<0.01%+13113F-HRTimeline
Versant Capital Management, Inc937$10.9K<0.01%013F-HRTimeline
SIMPLEX TRADING, LLC906$10.5K<0.01%+86213F-HRTimeline
ROTHSCHILD INVESTMENT LLC869$10.1K<0.01%+28813F-HRTimeline
Fortitude Family Office, LLC844$9.82K<0.01%+13613F-HRTimeline
Physician Wealth Advisors, Inc.610$7.1K<0.01%013F-HRTimeline
Carolina Wealth Advisors, LLC518$6.03K<0.01%new13F-HRTimeline
FINANCIAL CONSULATE, INC500$5.82K<0.01%013F-HRTimeline
Root Financial Partners, LLC415$4.83K<0.01%new13F-HRTimeline
Parallel Advisors, LLC405$4.71K<0.01%013F-HR/ATimeline
VSM Wealth Advisory, LLC375$4.37K<0.01%-37313F-HRTimeline
GROUP ONE TRADING LLC295$3.43K<0.01%new13F-HRTimeline
Private Wealth Management Group, LLC266$3.1K<0.01%013F-HRTimeline
NISA INVESTMENT ADVISORS, LLC159$1.85K<0.01%-1,05913F-HRTimeline
SIGNATUREFD, LLC153$1.78K<0.01%013F-HRTimeline
Basecamp Wealth Advisors LLC146$1.7K<0.01%+6013F-HRTimeline
Rialto Wealth Management, LLC136$1.58K<0.01%013F-HRTimeline
SJS Investment Consulting Inc.111$1.29K<0.01%+2813F-HRTimeline