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Security record · archived quarter

ZSTK

name pending profile ingest

Q2 2026 Q1 2026
6Tracked holders
+5Δ holders
51.62KShares held
$318,964Reported value
+5New positions
−0Exits
Strongly Rising How these are computed → Explain this at the Research Desk →

Momentum inputs (comparable managers): holder breadth +30.0% · share flow +30.0% · net new positions +20.0%formula
Broad accumulation — rising shares across more holders

All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026

Ownership over time
QuarterHoldersΔSharesReported valueNewExits
Q2 2026 8 +2 46.91K $140,693 +2
Q1 2026 6 +5 51.62K $318,964 +5
Holder count
Who holds it · Q1 2026
#ManagerSharesΔ sharesValueTheir weightHeld
1 Vanguard Capital Management Llc 25.44K $157,219 0.0% n/c 1 SEC ↗
2 Geode Capital Management (passive) 25.32K New $156,487 0.0% New 1 SEC ↗
3 Geode Capital Management (passive) 25.32K New $156,487 0.0% New 1 SEC ↗
4 UBS Group AG 666 New $4,116 0.0% New 1 SEC ↗
5 UBS Group AG 666 New $4,116 0.0% New 1 SEC ↗
6 Morgan Stanley 173 New $1,069 0.0% New 1 SEC ↗
7 Morgan Stanley 173 New $1,069 0.0% New 1 SEC ↗
8 Osaic Holdings, Inc. 12 New $73 0.0% New 1 SEC ↗
9 Osaic Holdings, Inc. 12 New $73 0.0% New 1 SEC ↗
10 Royal Bank Of Canada 12 New $0 0.0% New 1 SEC ↗

“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.

New buyers

Geode Capital Management $156,487 0.0%
Geode Capital Management $156,487 0.0%
UBS Group AG $4,116 0.0%
UBS Group AG $4,116 0.0%
Morgan Stanley $1,069 0.0%
Morgan Stanley $1,069 0.0%
Osaic Holdings, Inc. $73 0.0%
Osaic Holdings, Inc. $73 0.0%
Royal Bank Of Canada $0 0.0%

Exited

No tracked exits this quarter.

Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 10 holders, 64.30K shares, $397,282 reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.

Frequently co-owned

What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.

Insider transactions

Open-market purchases (P)

No open-market insider purchases in our coverage window.

Open-market sales (S)

Aug 19 Rong Rudy

Officer · 1.00K sh · $7,570

Awards, exercises and tax withholding are never counted as buys or sales here. Methodology

Beneficial ownership
Jul 21 SC 13D/A — Vaiman Dany

2.9% of class · View original SEC filing ↗

Jul 21 SC 13D/A — Reis-Faria Daniel

37.5% of class · View original SEC filing ↗

Jul 21 SC 13D/A — Heinrich Michael

30.2% of class · View original SEC filing ↗

Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR. Reporting period: Q1 2026 · Methodology · Get this via the API