ZSTK ZEROSTACK CORP

COM (common), issuer CIK 1790169

9 managers (10 13F filers) reported a position in ZSTK shares at 2026-03-31, 64,297 shares in all. 8 filers opened a position and 0 filers sold out during the quarter.

Managers: 9
13F filers: 10
New: 8
Added: 0
Reduced: 0
Sold out: 0
Shares held by filers: 64,297

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

Holder	Shares	Value	% of portfolio	Change	Source
VANGUARD GROUP INCgroup of 2 filers holding	38,088	$235K		new	Timeline VANGUARD CAPITAL MANAGEMENT LLC: 25,440 (<0.01%) 13F-HR/A VANGUARD FIDUCIARY TRUST CO: 12,648 (<0.01%) 13F-HR
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC	25,321	$156K	<0.01%	new	13F-HR Timeline Group
UBS Group AGin group UBS Group AG	666	$4.12K	<0.01%	new	13F-HR Timeline Group
MORGAN STANLEYin group MORGAN STANLEY	173	$1.07K	<0.01%	new	13F-HR Timeline Group
Bernard Wealth Management Corp.	12	$75	<0.01%	new	13F-HR Timeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.	12	$73	<0.01%	new	13F-HR Timeline Group
Sound Income Strategies, LLC	12	$72	<0.01%	new	13F-HR Timeline
Key Financial Inc	1	$6	<0.01%	new	13F-HR Timeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA	12	$0	0%	new	13F-HR Timeline GroupValue filed as zero, left out of ratios.