ZeroStack Corp
ZSTK
23 hedge funds and large institutions have $330K invested in ZeroStack Corp in 2025 Q2 according to their latest regulatory filings, with 7 funds opening new positions, 5 increasing their positions, 2 reducing their positions, and 5 closing their positions.
150% more repeat investments, than reductions
Existing positions increased: 5 | Existing positions reduced: 2
40% more first-time investments, than exits
New positions opened: 7 | Existing positions closed: 5
10% more funds holding
Funds holding: 21 → 23 (+2)
0.01% less ownership
Funds ownership: 0.07% → 0.06% (-0.01%)
1% less capital invested
Capital invested by funds: $334K → $330K (-$3.42K)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
HF
HRT Financial
New York
|
+$11.6K |
| 2 |
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
|
+$11K |
| 3 |
XT
XTX Topco
George Town,
Cayman Islands
|
+$10.4K |
| 4 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$3.08K |
| 5 |
TWC
TD Waterhouse Canada
Toronto,
Ontario, Canada
|
+$2.96K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
EMCIP
Ewing Morris & Co Investment Partners
Toronto,
Ontario, Canada
|
-$16.3K |
| 2 |
TSS
Two Sigma Securities
New York
|
-$6.59K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$4.67K |
| 4 |
Renaissance Technologies
New York
|
-$1.49K |
| 5 |
Barclays
London,
United Kingdom
|
-$191 |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
DB
26
Danske Bank
Copenhagen K,
Denmark
| $1 | – | – | – |
|
|
EMCIP
27
Ewing Morris & Co Investment Partners
Toronto,
Ontario, Canada
| – | -$16.3K | -479 | Closed |
|
|
TSS
28
Two Sigma Securities
New York
| – | -$6.59K | -279 | Closed |
|
|
29
Barclays
London,
United Kingdom
| – | -$191 | -8 | Closed |
|
|
GFPC
30
Global Financial Private Client
Sarasota,
Florida
| – | -$150 | -6 | Closed |
|
|
TFA
31
Toth Financial Advisory
Leesburg,
Virginia
| – | -$28 | -1 | Closed |
|
ZSTK Hedge Fund Activity: Q2 2025 in Review
23 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in ZeroStack Corp (ZSTK) for Q2 2025, worth a combined $330K — down 1% from $334K a quarter earlier.
Buyers outnumbered sellers: 7 funds opened new ZSTK positions and 5 closed out — a net gain of 2 holders — while 5 added to existing stakes and 2 trimmed.
The largest buyer was HRT Financial, opening a new position worth an estimated $11.6K. The largest seller was Ewing Morris & Co Investment Partners, exiting entirely with an estimated $16.3K sold.
- 23 institutional investors held ZeroStack Corp (ZSTK) as of Q2 2025, up from 21 in Q1 2025.
- Funds reported $330K of ZeroStack Corp stock for Q2 2025, down 1% quarter-over-quarter.
- 7 funds opened new ZeroStack Corp positions in Q2 2025 and 5 closed out, a net change of +2 holders.
- The largest ZeroStack Corp buyer in Q2 2025 was HRT Financial, an estimated $11.6K added.
- The largest ZeroStack Corp seller in Q2 2025 was Ewing Morris & Co Investment Partners, an estimated $16.3K sold.
Based on aggregated 13F filings for Q2 2025.