J-Star Holding Co
YMAT
2 hedge funds and large institutions have $10.2K invested in J-Star Holding Co in 2026 Q1 according to their latest regulatory filings, with 2 funds opening new positions, increasing their positions, 0 reducing their positions, and 3 closing their positions.
0.06% less ownership
Funds ownership: 0.06% → 0% (-0.06%)
33% less funds holding
Funds holding: 3 → 2 (-1)
33% less first-time investments, than exits
New positions opened: 2 | Existing positions closed: 3
57% less capital invested
Capital invested by funds: $23.7K → $10.2K (-$13.5K)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
+$9.56K |
| 2 |
XT
XTX Topco
George Town,
Cayman Islands
|
+$6.04K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HF
HRT Financial
New York
|
-$17K |
| 2 |
TSS
Two Sigma Securities
New York
|
-$6.35K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$335 |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
1
Citadel Advisors
Miami,
Florida
| $6.23K | +$9.56K | +4,432 | New |
|
|
XT
2
XTX Topco
George Town,
Cayman Islands
| $3.93K | +$6.04K | +2,797 | New |
|
|
HF
3
HRT Financial
New York
| – | -$17K | -7,129 | Closed |
|
|
TSS
4
Two Sigma Securities
New York
| – | -$6.35K | -2,727 | Closed |
|
|
5
UBS Group
Zurich,
Switzerland
| – | -$335 | -144 | Closed |
|
YMAT Hedge Fund Activity: Q1 2026 in Review
2 of the 8,130 institutional investors tracked by Wall St. Rank reported a position in J-Star Holding Co (YMAT) for Q1 2026, worth a combined $10.2K — down 57% from $23.7K a quarter earlier.
Sellers outnumbered buyers: 3 funds closed out of YMAT and 2 opened new positions — a net loss of 1 holder — while 0 trimmed existing stakes and 0 added.
The largest buyer was Citadel Advisors, opening a new position worth an estimated $9.56K. The largest seller was HRT Financial, exiting entirely with an estimated $17K sold.
- 2 institutional investors held J-Star Holding Co (YMAT) as of Q1 2026, down from 3 in Q4 2025.
- Funds reported $10.2K of J-Star Holding Co stock for Q1 2026, down 57% quarter-over-quarter.
- 2 funds opened new J-Star Holding Co positions in Q1 2026 and 3 closed out, a net change of -1 holder.
- The largest J-Star Holding Co buyer in Q1 2026 was Citadel Advisors, an estimated $9.56K added.
- The largest J-Star Holding Co seller in Q1 2026 was HRT Financial, an estimated $17K sold.
Based on aggregated 13F filings for Q1 2026.