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Ownership — IOSP
Institutional Holdings
Insider Transactions
US Institutional Ownership
99.5%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
4.38M
$356.0M
17.79%
+502.3K
2026-06-30
Allspring Global Investments Holdings, LLC
1.89M
$154.0M
7.68%
-423.5K
2026-06-30
Vanguard Portfolio Management LLC
1.88M
$153.0M
7.65%
+24.2K
2026-06-30
Dimensional Fund Advisors LP
1.31M
$106.0M
5.30%
+62.9K
2026-06-30
Vanguard Capital Management LLC
1.11M
$90.0M
4.50%
-6.5K
2026-06-30
State Street Corp
996.0K
$81.0M
4.04%
+31.7K
2026-06-30
Nuveen, LLC
755.7K
$61.0M
3.07%
+112.5K
2026-06-30
Geode Capital Management, LLC
666.6K
$54.0M
2.71%
+36.0K
2026-06-30
Goldman Sachs Group Inc
662.2K
$53.0M
2.69%
+170.2K
2026-06-30
Victory Capital Management Inc
660.1K
$53.0M
2.68%
-204.9K
2026-06-30
Two Sigma Investments, LP
568.7K
$46.0M
2.31%
--
2026-06-30
AQR Capital Management LLC
482.5K
$39.0M
1.96%
+170.5K
2026-06-30
Brown Advisory Inc
408.5K
$33.0M
1.66%
+112.0K
2026-06-30
JPMorgan Chase & Co
370.6K
$29.0M
1.50%
+64.7K
2026-06-30
Sixth Street Partners Management Company, L.P.
355.7K
$28.0M
1.44%
--
2026-06-30
Charles Schwab Investment Management Inc
355.7K
$28.0M
1.44%
-10.2K
2026-06-30
Gendell Jeffrey L
324.5K
$26.0M
1.32%
+30.0K
2026-06-30
Royce & Associates LP
308.7K
$25.0M
1.25%
+47.4K
2026-06-30
Northern Trust Corp
303.0K
$24.0M
1.23%
+18.8K
2026-06-30
Qube Research & Technologies Ltd
285.8K
$23.0M
1.16%
-120.8K
2026-06-30
Assenagon Asset Management S.A.
272.8K
$22.0M
1.11%
-218.1K
2026-06-30
Western Standard LLC
236.8K
$19.0M
0.96%
+10.0K
2026-06-30
Bank of America Corp
235.7K
$19.0M
0.96%
-55.0K
2026-06-30
Morgan Stanley
230.8K
$18.0M
0.94%
-4.8K
2026-06-30
Renaissance Technologies LLC
185.0K
$15.0M
0.75%
+66.1K
2026-06-30
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