Oil States International OIS Institutional Ownership

NYSE OIS

$7.93 -0.56 (-6.60%)

As of: Oct 22, 2026 · 10:17 AM EDT

Institutions by Trading Activity

196 Institutions

Increased 99 50.5%

Unchanged 25 12.8%

Reduced 72 36.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

88.34%

▼-1.42 pp QoQ

Shares Held by Institutions

53.31Mn

of 60.34Mn outstanding

▼-1.35% QoQ

Shares Outstanding

60.34Mn

7.04Mn held outside 13F filers

Institutional Investors

196

filed 13F for Jun 2026

▼-18 vs prior quarter

Net Shares Added (QoQ)

-730.77K

distributed since last quarter

Value of Holdings

$442.44Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Oct 11, 2026

Oil States International, Inc (NYSE:OIS) appeared in the 13F filings of 196 institutional investors for the quarter ended June 30, 2026.

Together they owned 88.34% of the outstanding stock in Q2 2026, down from 89.76% a quarter earlier.
Total shares held in Oil States International fell 1.35% versus Q1 2026, while the number of holders rose 30.67% versus Q2 2025.
Among the 196 holders of Oil States International, 99 added to their positions, 72 reduced their stakes and 25 left their positions unchanged.
Altogether, institutional holders owned 53.31Mn OIS shares at the end of Q2 2026, down 730.77K from the prior quarter and up 3.54Mn from a year earlier.
BlackRock, Inc. was the top holder of Oil States International as of June 30, 2026, with 6.82Mn shares, or 11.30% of shares outstanding.
Holders that added the most shares of Oil States International in Q2 2026 were Qube Research & Technologies Ltd (+923.88K shares), Algert Global LLC (+799.76K shares), BlackRock, Inc. (+508.65K shares), Two Sigma Investments, LP (+371.47K shares) and Squarepoint Ops LLC (+369.62K shares).
On the other side, among holders that kept a position in Oil States International, the largest reductions in Q2 2026 came from Marshall Wace, LLP (-691.14K shares), JPMorgan Chase & Co (-647.7K shares), Dimensional Fund Advisors LP (-515.65K shares), Arrowstreet Capital, Limited Partnership (-442.44K shares) and Acadian Asset Management LLC (-310.1K shares).
Per Business Quant data, the 10 largest holders of Oil States International at the end of Q2 2026 were BlackRock, Inc. (6.82Mn shares), Dimensional Fund Advisors LP (3.01Mn shares), Vanguard Capital Management LLC (2.42Mn shares), American Century Companies Inc (2.21Mn shares), Acadian Asset Management LLC (2.04Mn shares), D. E. Shaw & Co., Inc. (2.02Mn shares), First Eagle Investment Management, LLC (2.01Mn shares), State Street Corp (1.98Mn shares), AQR Capital Management LLC (1.74Mn shares) and Vanguard Portfolio Management LLC (1.63Mn shares).

Form 13F Holdings

197 Institutional Holders

Report period 30 Jun, 2026

Total shares held 53.31Mn

Of outstanding 88.34%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	6,818,282	11.30%	▲508,651	+8.06%	$54.61Mn
2	DIMENSIONAL FUND ADVISORS LP	0000354204	3,006,491	4.98%	▼515,652	-14.64%	$24.08Mn
3	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	2,418,106	4.01%	▲547	+0.02%	$19.37Mn
4	AMERICAN CENTURY COMPANIES INC	0000748054	2,213,177	3.67%	▲364,869	+19.74%	$17.73Mn
5	ACADIAN ASSET MANAGEMENT LLC	0000916542	2,042,288	3.38%	▼310,097	-13.18%	$16.35K
6	D. E. Shaw & Co., Inc.	0001009207	2,017,956	3.34%	▼149,316	-6.89%	$16.16Mn
7	First Eagle Investment Management, LLC	0001325447	2,005,677	3.32%	▼38,032	-1.86%	$16.07Mn
8	State Street Corp	0000093751	1,980,909	3.28%	▲247,410	+14.27%	$15.87Mn
9	AQR CAPITAL MANAGEMENT LLC	0001167557	1,736,910	2.88%	▼87,805	-4.81%	$13.91Mn
10	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	1,625,098	2.69%	▼11,726	-0.72%	$13.02Mn
11	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,445,708	2.40%	▲87,918	+6.48%	$11.58Mn
12	TWO SIGMA INVESTMENTS, LP	0001179392	1,444,776	2.39%	▲371,472	+34.61%	$11.57Mn
13	KENNEDY CAPITAL MANAGEMENT LLC	0000884589	1,291,140	2.14%	▲212,741	+19.73%	$10.34Mn
14	Morgan Stanley	0000895421	1,206,130	2.00%	▼144,030	-10.67%	$9.66Mn
15	Qube Research & Technologies Ltd	0001729829	1,122,386	1.86%	▲923,875	+465.40%	$8.99Mn
16	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	0001164833	1,100,201	1.82%	▲99,150	+9.90%	$8.81Mn
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	1,083,987	1.80%	▼47,622	-4.21%	$8.68Mn
18	BRIDGEWAY CAPITAL MANAGEMENT, LLC	0001107261	840,237	1.39%	▲7,332	+0.88%	$6.73Mn
19	ALGERT GLOBAL LLC	0001275218	813,971	1.35%	▲799,761	+5,628.16%	$6.52Mn
20	MILLENNIUM MANAGEMENT LLC	0001273087	667,842	1.11%	▼36,569	-5.19%	$5.35Mn

Showing 1 to 20 of 197 holders