ProKidney
PROK
71 hedge funds and large institutions have $99.5M invested in ProKidney in 2026 Q2 according to their latest regulatory filings, with 22 funds opening new positions, 25 increasing their positions, 11 reducing their positions, and 21 closing their positions.
422% more call options, than puts
Call options by funds: $605K | Put options by funds: $116K
127% more repeat investments, than reductions
Existing positions increased: 25 | Existing positions reduced: 11
27% more capital invested
Capital invested by funds: $78.1M → $99.5M (+$21.3M)
5% more first-time investments, than exits
New positions opened: 22 | Existing positions closed: 21
0% more funds holding
Funds holding: 71 → 71 (0)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
7% less ownership
Funds ownership: 30.76% → 23.76% (-7%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$6.97M |
| 2 |
Geode Capital Management
Boston,
Massachusetts
|
+$2.12M |
| 3 |
Morgan Stanley
New York
|
+$1.64M |
| 4 |
Vanguard Portfolio Management
Malvern,
Pennsylvania
|
+$946K |
| 5 |
State Street
Boston,
Massachusetts
|
+$895K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
-$2.23M |
| 2 |
Marshall Wace
London,
United Kingdom
|
-$1.81M |
| 3 |
WP
Woodline Partners
San Francisco,
California
|
-$895K |
| 4 |
ECM
ExodusPoint Capital Management
New York
|
-$455K |
| 5 |
Jane Street
New York
|
-$411K |
PROK Hedge Fund Activity: Q2 2026 in Review
71 of the 8,318 institutional investors tracked by Wall St. Rank reported a position in ProKidney (PROK) for Q2 2026, worth a combined $99.5M — up 27% from $78.1M a quarter earlier.
Buyers outnumbered sellers: 22 funds opened new PROK positions and 21 closed out — a net gain of 1 holder — while 25 added to existing stakes and 11 trimmed.
The largest buyer was BlackRock, adding an estimated $6.97M. The largest seller was Millennium Management, cutting an estimated $2.23M.
- 71 institutional investors held ProKidney (PROK) as of Q2 2026, unchanged from Q1 2026.
- Funds reported $99.5M of ProKidney stock for Q2 2026, up 27% quarter-over-quarter.
- 22 funds opened new ProKidney positions in Q2 2026 and 21 closed out, a net change of +1 holder.
- The largest ProKidney buyer in Q2 2026 was BlackRock, an estimated $6.97M added.
- The largest ProKidney seller in Q2 2026 was Millennium Management, an estimated $2.23M sold.
Based on aggregated 13F filings for Q2 2026.