Search
ZeroStack Ord Shs
ZSTKAdd to Watchlist
1.505USD
-0.035-2.27%
Close 07-31 16:00（ET）Quotes delayed by 15 min
3.66MMarket Cap
LossP/E TTM
Shareholding Stats
Updated: Wed, May 13
Updated: Wed, May 13
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
Heinrich (Michael)
19.39%
Starke (Clifford A)
4.06%
Vaiman (Dany)
1.14%
Vanguard Capital Management, LLC
1.05%
The Vanguard Group, Inc.
1.05%
Other
73.32%
Shareholders
Shareholders
Proportion
Heinrich (Michael)
19.39%
Starke (Clifford A)
4.06%
Vaiman (Dany)
1.14%
Vanguard Capital Management, LLC
1.05%
The Vanguard Group, Inc.
1.05%
Other
73.32%
Shareholder Types
Shareholders
Proportion
Individual Investor
25.00%
Investment Advisor
2.65%
Investment Advisor/Hedge Fund
1.26%
Hedge Fund
0.03%
Other
71.05%
Institutional Shareholding
Updated: Wed, Apr 1
Updated: Wed, Apr 1
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2026Q1
50
95.87K
3.94%
+58.34K
Shareholder Activity
Name
Shares Held
Proportion
Change
Chg %
Date
Starke (Clifford A)
98.74K
4.06%
--
--
Nov 28, 2025
Vaiman (Dany)
27.64K
1.14%
+13.93K
+101.61%
Dec 19, 2025
Empery Asset Management, L.P.
8.95K
0.37%
-14.80K
-62.32%
Mar 31, 2025
Dorf (Sammy)
6.41K
0.26%
--
--
Nov 28, 2025
Woo (Edward)
3.51K
0.14%
--
--
Nov 28, 2025
View more