OIL STATES INTERNATIONAL INC (OIS) Institutional Ownership Changes & 13F Activity

OIL STATES INTERNATIONAL INC (OIS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Driehaus Capital Management Llc, Gendell Jeffrey L, Marshall Wace, Llp, Hotchkis & Wiley Capital Management Llc, and Millennium Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
M&T Bank CorpSell-212,346-95.4%10,257$119.39KQ1 2026Sep 04, 2026
Algert Global LlcSell-13,496-48.7%14,210$165.40KQ1 2026Aug 11, 2026
Brighton Jones LlcBuy+18,738—18,738$218.11KQ1 2026Aug 07, 2026
Wells Fargo & Company/MnSell-40,829-64.4%22,545$262.42KQ1 2026Jul 08, 2026
Bank Of America CorpSell-41,093-30.7%92,836$1.08MQ1 2026May 18, 2026
California State Teachers Retirement SystemSell-419-12.1%3,053$35.54KQ1 2026May 18, 2026
Driehaus Capital Management LlcBuy+1,328,078—1,328,078$15.46MQ1 2026May 15, 2026
Gendell Jeffrey LSell-1,266,952-80.9%298,317$3.47MQ1 2026May 15, 2026
Marshall Wace, LlpBuy+932,772—932,772$10.86MQ1 2026May 15, 2026
Hotchkis & Wiley Capital Management LlcSell-702,850-41.2%1,001,051$11.65MQ1 2026May 15, 2026
Millennium Management LlcBuy+692,025+5587.2%704,411$8.20MQ1 2026May 15, 2026
D. E. Shaw & Co., Inc.Sell-481,836-18.2%2,167,272$25.23MQ1 2026May 15, 2026
Two Sigma Investments, LpBuy+475,587+79.6%1,073,304$12.49MQ1 2026May 15, 2026
Morgan StanleyBuy+368,321+37.5%1,350,160$15.72MQ1 2026May 15, 2026
State Street CorpBuy+283,812+19.6%1,733,499$20.18MQ1 2026May 15, 2026
American Century Companies IncBuy+233,176+14.4%1,848,308$21.51MQ1 2026May 15, 2026
Trexquant Investment LpBuy+228,714+70.9%551,183$6.42MQ1 2026May 15, 2026
Goldman Sachs Group IncBuy+215,957+44.4%702,085$8.17MQ1 2026May 15, 2026
Barclays PlcSell-125,609-66.6%62,995$733.26KQ1 2026May 15, 2026
Citadel Advisors LlcSell-85,766-66.9%42,482$494.49KQ1 2026May 15, 2026
Bridgeway Capital Management, LlcSell-80,214-8.8%832,905$9.70MQ1 2026May 15, 2026
Engineers Gate Manager LpBuy+78,649+519.9%93,777$1.09MQ1 2026May 15, 2026
Qube Research & Technologies LtdSell-76,636-27.9%198,511$2.31MQ1 2026May 15, 2026
Point72 Asset Management, L.P.Buy+70,343—70,343$818.79KQ1 2026May 15, 2026
Susquehanna International Group, LlpBuy+68,587+219.1%99,890$1.16MQ1 2026May 15, 2026
Cambria Investment Management, L.P.Buy+58,712—58,712$683.41KQ1 2026May 15, 2026
Gotham Asset Management, LlcBuy+57,963—57,963$674.69KQ1 2026May 15, 2026
Harvest Investment Services, LlcBuy+48,320—48,320$562.45KQ1 2026May 15, 2026
Aqr Capital Management LlcBuy+44,171+2.5%1,824,715$21.24MQ1 2026May 15, 2026
Boothbay Fund Management, LlcBuy+36,532—36,532$425.23KQ1 2026May 15, 2026
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Frequently asked questions about OIS activity

  • Which institutional owners are buying OIS?

    Institutional owners buying OIS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in OIS activity?

    "Buy" means an investor increased their reported position in OIS compared to the prior reporting period. This reflects growing exposure to OIL STATES INTERNATIONAL INC (OIS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in OIS increasing?

    Institutional interest in OIS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.