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Overview
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Business Summary
Filings
Ownership
Valuation
Ownership — ROCK
Institutional Holdings
Insider Transactions
US Institutional Ownership
89.9%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
4.92M
$221.0M
14.27%
-129.1K
2026-06-30
FMR LLC
4.45M
$200.0M
12.90%
+17.2K
2026-06-30
ALLIANCEBERNSTEIN L.P.
2.23M
$89.0M
6.48%
+34.4K
2026-06-30
DIMENSIONAL FUND ADVISORS LP
1.50M
$67.0M
4.35%
-207.0K
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
1.33M
$60.0M
3.86%
+10.3K
2026-06-30
VANGUARD PORTFOLIO MANAGEMENT LLC
1.29M
$58.0M
3.74%
-33.1K
2026-06-30
STATE STREET CORP
1.23M
$55.0M
3.56%
-116.7K
2026-06-30
BARROW HANLEY MEWHINNEY & STRAUSS LLC
984.9K
$44.0M
2.86%
-185.1K
2026-06-30
FRONTIER CAPITAL MANAGEMENT CO LLC
830.3K
$37.0M
2.41%
+142.0K
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
822.9K
$37.0M
2.39%
+45.2K
2026-06-30
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
805.6K
$36.0M
2.34%
--
2026-06-30
SEGALL BRYANT & HAMILL, LLC
587.5K
$26.0M
1.70%
+234.0K
2026-06-30
Simcoe Capital Management, LLC
494.4K
$22.0M
1.43%
--
2026-06-30
Boston Partners
464.6K
$20.0M
1.35%
-222.0K
2026-06-30
Sixth Street Partners Management Company, L.P.
445.3K
$20.0M
1.29%
--
2026-06-30
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
445.3K
$20.0M
1.29%
+4.8K
2026-06-30
ROYCE & ASSOCIATES LP
402.4K
$18.0M
1.17%
+113.8K
2026-06-30
SG Capital Management LLC
389.4K
$17.0M
1.13%
+155.6K
2026-06-30
MORGAN STANLEY
357.2K
$16.0M
1.04%
-5.1K
2026-06-30
NORTHERN TRUST CORP
353.3K
$15.0M
1.02%
+19.4K
2026-06-30
FIRST WILSHIRE SECURITIES MANAGEMENT INC
268.8K
$12.0M
0.78%
-231.2K
2026-06-30
UBS Group AG
254.7K
$11.0M
0.74%
+57.3K
2026-06-30
Balyasny Asset Management L.P.
243.4K
$10.0M
0.71%
+126.6K
2026-06-30
D. E. Shaw & Co., Inc.
224.7K
$10.0M
0.65%
-24.9K
2026-06-30
Invenomic Capital Management LP
203.4K
$9.0M
0.59%
+20.3K
2026-06-30
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