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Filings
Ownership
Valuation
Ownership — ARTNA
Institutional Holdings
Insider Transactions
US Institutional Ownership
50.0%
Institution
Shares
Value
Ownership %
Change
Filing Date
T. Rowe Price Investment Management, Inc.
907.7K
$28.0M
8.80%
+591.3K
2026-03-31
VANGUARD CAPITAL MANAGEMENT LLC
388.5K
$12.0M
3.76%
--
2026-03-31
RENAISSANCE TECHNOLOGIES LLC
320.5K
$10.0M
3.11%
+42.0K
2026-03-31
ADAGE CAPITAL PARTNERS GP, L.L.C.
200.0K
$6.0M
1.94%
+50.0K
2026-03-31
MORGAN STANLEY
195.9K
$6.0M
1.90%
+35.4K
2026-03-31
DIMENSIONAL FUND ADVISORS LP
189.9K
$6.0M
1.84%
+1.2K
2026-03-31
UBS Group AG
171.2K
$5.0M
1.66%
+106.7K
2026-03-31
BlackRock, Inc.
170.7K
$5.0M
1.65%
-772.7K
2026-03-31
Kestra Advisory Services, LLC
166.4K
$5.0M
1.61%
+1.7K
2026-03-31
Prospera Financial Services Inc
157.9K
$5.0M
1.53%
+32.3K
2026-03-31
JANE STREET GROUP, LLC
149.8K
$4.0M
1.45%
+128.6K
2026-03-31
ROFFMAN MILLER ASSOCIATES INC /PA/
146.1K
$4.0M
1.42%
+8.7K
2026-03-31
Costello Asset Management, INC
131.5K
$4.0M
1.27%
-8.5K
2026-03-31
GEODE CAPITAL MANAGEMENT, LLC
101.9K
$3.0M
0.99%
-7.2K
2026-03-31
MARSHALL WACE, LLP
100.7K
$3.0M
0.98%
+48.7K
2026-03-31
GOLDMAN SACHS GROUP INC
97.8K
$3.0M
0.95%
+35.5K
2026-03-31
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
95.4K
$3.0M
0.92%
+1.9K
2026-03-31
MILLENNIUM MANAGEMENT LLC
83.8K
$2.0M
0.81%
+42.0K
2026-03-31
FIRST MANHATTAN CO. LLC.
75.5K
$2.0M
0.73%
-10.7K
2026-03-31
Bank of New York Mellon Corp
74.2K
$2.0M
0.72%
-2.4K
2026-03-31
DEPRINCE RACE & ZOLLO INC
73.7K
$2.0M
0.71%
+7.8K
2026-03-31
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
73.7K
$2.0M
0.71%
+17.2K
2026-03-31
FCA CORP /TX
69.7K
$2.0M
0.68%
+4.4K
2026-03-31
STATE STREET CORP
69.0K
$2.0M
0.67%
+2.3K
2026-03-31
VANGUARD PORTFOLIO MANAGEMENT LLC
65.1K
$2.0M
0.63%
--
2026-03-31
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