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Ownership — MASS
Institutional Holdings
Insider Transactions
US Institutional Ownership
71.8%
Institution
Shares
Value
Ownership %
Change
Filing Date
First Light Asset Management, LLC
6.28M
$54.0M
16.51%
+210.2K
2026-06-30
AWM Investment Company, Inc.
4.88M
$42.0M
12.82%
-320.2K
2026-06-30
ARK Investment Management LLC
2.03M
$17.0M
5.33%
+81.2K
2026-06-30
BlackRock, Inc.
1.94M
$16.0M
5.11%
+176.9K
2026-06-30
Needham Investment Management LLC
1.82M
$15.0M
4.78%
+580.6K
2026-06-30
Vanguard Capital Management LLC
1.29M
$11.0M
3.39%
+172.3K
2026-06-30
First Eagle Investment Management, LLC
930.0K
$8.0M
2.44%
+126.4K
2026-06-30
Geode Capital Management, LLC
761.8K
$6.0M
2.00%
+66.3K
2026-06-30
Granahan Investment Management, LLC
692.1K
$6.0M
1.82%
-3.0K
2026-06-30
State Street Corp
606.6K
$5.0M
1.59%
-19.3K
2026-06-30
Essex Investment Management Co LLC
470.2K
$4.0M
1.24%
-21.0K
2026-06-30
Morgan Stanley
404.1K
$3.0M
1.06%
+30.8K
2026-06-30
Meros Investment Management, LP
361.4K
$3.0M
0.95%
-370
2026-06-30
American Century Companies Inc
359.8K
$3.0M
0.95%
+304.0K
2026-06-30
HighMark Wealth Management LLC
339.8K
$2.0M
0.89%
+20.4K
2026-06-30
Northern Trust Corp
266.4K
$2.0M
0.70%
+25.1K
2026-06-30
Bank of America Corp
251.0K
$2.0M
0.66%
+225.9K
2026-06-30
Sixth Street Partners Management Company, L.P.
233.9K
$2.0M
0.61%
--
2026-06-30
Charles Schwab Investment Management Inc
233.9K
$2.0M
0.61%
+4.4K
2026-06-30
Sumitomo Mitsui Trust Group, Inc.
228.7K
$1.0M
0.60%
-41.2K
2026-06-30
Vanguard Portfolio Management LLC
194.9K
$1.0M
0.51%
+31.2K
2026-06-30
Renaissance Technologies LLC
191.9K
$1.0M
0.50%
-38.3K
2026-06-30
Vanguard Fiduciary Trust Co
186.1K
$1.0M
0.49%
+5.8K
2026-06-30
Raymond James Financial Inc
167.3K
$1.0M
0.44%
-9.2K
2026-06-30
Russell Investments Group, Ltd.
149.7K
$1.0M
0.39%
+4.3K
2026-06-30
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