J-Star Holding Co., Ltd. Ordinary Shares
J-Star Holding Co., Ltd. Ordinary Shares (YMAT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · YMAT · as of Sep 30, 2025
Ownership Breakdown
2
Institutional Holders
▲ 2 vs Q2
$100,766
Total Inst. Value
▲ $100,766 vs Q2
16.41M
Shares Outstanding
freeFloat 24.08%
83,972
13F Shares Held
▲ 83,972 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
YMAT largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 2 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
CITADEL ADVISORS LLC sporting & athletic goods, nec | 68.5K | 40.28% | 40.28% | $82.24M | Nov 14, 2025 | NEW |
TWO SIGMA SECURITIES, LLC sporting & athletic goods, nec | 15.4K | 9.08% | 9.08% | $18.53M | Nov 14, 2025 | NEW |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
0
Increased
+0 shares2
New Positions
first time holders0
Decreased
−0 shares0
Sold Out
fully exitedNet shares change (top 50)
+0
+0 / −0
Net new holders
+2
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
YMAT insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
J-Star Holding Co., Ltd. Ordinary Shares (YMAT) is primarily owned by institutional investors, who hold approximately 0.5% of total shares outstanding. Company insiders own approximately 75.92%, while retail and public investors account for the remaining 23.56%.
The largest institutional shareholder of J-Star Holding Co., Ltd. Ordinary Shares is CITADEL ADVISORS LLC, holding approximately 68,530 shares — equal to 40.28% of outstanding shares — as of September 30, 2025.
A total of 2 institutional investors currently hold YMAT stock, with a combined institutional value of approximately $100,766 as of the most recent 13F filing period.
Frequently asked questions
YMAT ownershipJ-Star Holding Co., Ltd. Ordinary Shares (YMAT) is primarily owned by institutional investors, who hold approximately 0.5% of shares. The largest shareholder is CITADEL ADVISORS LLC with a 40.28% stake. Company insiders hold 75.92%. Data sourced from SEC Form 13F as of September 30, 2025.