Bluejay Diagnostics
BJDX
5 hedge funds and large institutions have $170K invested in Bluejay Diagnostics in 2025 Q2 according to their latest regulatory filings, with 2 funds opening new positions, 1 increasing their positions, 1 reducing their positions, and 1 closing their positions.
1,673% more capital invested
Capital invested by funds: $9.61K → $170K (+$161K)
100% more first-time investments, than exits
New positions opened: 2 | Existing positions closed: 1
25% more funds holding
Funds holding: 4 → 5 (+1)
1.54% more ownership
Funds ownership: 0.12% → 1.66% (+1.5%)
0% more repeat investments, than reductions
Existing positions increased: 1 | Existing positions reduced: 1
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
SM
Sabby Management
Miami Beach,
Florida
|
+$196K |
| 2 |
TRCT
Tower Research Capital (TRC)
New York
|
+$1.09K |
| 3 |
Citigroup
New York
|
+$491 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
UBS Group
Zurich,
Switzerland
|
-$753 |
| 2 |
SS
SBI Securities
Tokyo,
Japan
|
-$75 |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
SM
1
Sabby Management
Miami Beach,
Florida
| $165K | +$196K | +24,008 | New |
|
|
TRCT
2
Tower Research Capital (TRC)
New York
| $3.91K | +$1.09K | +133 | +31% |
|
|
3
UBS Group
Zurich,
Switzerland
| $764 | -$753 | -92 | -45% |
|
|
4
Citigroup
New York
| $415 | +$491 | +60 | New |
|
5
Bank of America
Charlotte,
North Carolina
| $9 | – | – | – |
|
|
SS
6
SBI Securities
Tokyo,
Japan
| – | -$75 | -5 | Closed |
|
BJDX Hedge Fund Activity: Q2 2025 in Review
5 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Bluejay Diagnostics (BJDX) for Q2 2025, worth a combined $170K — up 1,673% from $9.61K a quarter earlier.
Buyers outnumbered sellers: 2 funds opened new BJDX positions and 1 closed out — a net gain of 1 holder — while 1 added to existing stakes and 1 trimmed.
The largest buyer was Sabby Management, opening a new position worth an estimated $196K. The largest seller was UBS Group, cutting an estimated $753.
- 5 institutional investors held Bluejay Diagnostics (BJDX) as of Q2 2025, up from 4 in Q1 2025.
- Funds reported $170K of Bluejay Diagnostics stock for Q2 2025, up 1,673% quarter-over-quarter.
- 2 funds opened new Bluejay Diagnostics positions in Q2 2025 and 1 closed out, a net change of +1 holder.
- The largest Bluejay Diagnostics buyer in Q2 2025 was Sabby Management, an estimated $196K added.
- The largest Bluejay Diagnostics seller in Q2 2025 was UBS Group, an estimated $753 sold.
Based on aggregated 13F filings for Q2 2025.