ProKidney Corp. (PROK) Ownership
PROK ownership summary
as of October 18, 2026- Institutions
- 26.5% of shares outstanding
- Insiders
- 46.45% of shares outstanding
- Shares outstanding
- 208.9M
- Float
- 184.6M shares available to trade
- Short interest
- 15.31% 23.8M shares short
- Days to cover
- 14.27 short interest up 10.9% vs prior month
- Institutions 26.52%
- Insiders 46.45%
- Other investors 27.02%
PROK top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Suvretta Capital Management, LLC | 5.91% | 12.3M | $16.4M | — | June 30, 2026 |
| 2 | Morgan Stanley - Brokerage Accounts | 4.72% | 9.9M | $13.1M | +898,211 (+10.0%) | June 30, 2026 |
| 3 | BlackRock Inc | 2.49% | 5.2M | $6.9M | +3.8M (+274.7%) | June 30, 2026 |
| 4 | Geode Capital Management, LLC | 1.14% | 2.4M | $3.2M | +1.2M (+94.3%) | June 30, 2026 |
| 5 | Bleichroeder LP | 0.96% | 2.0M | $2.7M | — | June 30, 2026 |
| 6 | Hennion & Walsh Asset Management Inc | 0.88% | 1.8M | $2.5M | +236,056 (+14.6%) | June 30, 2026 |
| 7 | Artia Global Partners LP | 0.86% | 1.8M | $2.4M | — | June 30, 2026 |
| 8 | Vanguard Capital Management, LLC | 0.56% | 1.2M | $1.6M | +28,320 (+2.5%) | June 30, 2026 |
| 9 | Renaissance Technologies Corp | 0.53% | 1.1M | $1.5M | −151,394 (−12.1%) | June 30, 2026 |
| 10 | Millennium Management LLC | 0.50% | 1.1M | $1.4M | −1.2M (−53.6%) | June 30, 2026 |
| 11 | State Street Corp | 0.50% | 1.0M | $1.4M | +489,100 (+87.8%) | June 30, 2026 |
| 12 | Charles Schwab Investment Management Inc | 0.37% | 782K | $1.0M | +153,958 (+24.5%) | June 30, 2026 |
| 13 | UBS Group AG | 0.32% | 671K | $893,025 | +336,901 (+100.7%) | June 30, 2026 |
| 14 | Northern Trust Corp | 0.32% | 665K | $884,220 | +423,247 (+175.2%) | June 30, 2026 |
| 15 | MYDA Advisors LLC | 0.31% | 641K | $852,231 | +212,000 (+49.4%) | June 30, 2026 |
| 16 | Vanguard Fiduciary Trust Co | 0.30% | 632K | $840,758 | +93,778 (+17.4%) | June 30, 2026 |
| 17 | Bank of America Corp | 0.26% | 545K | $725,060 | −208,254 (−27.6%) | June 30, 2026 |
| 18 | Vanguard Portfolio Management, LLC | 0.25% | 517K | $687,719 | +517,082 (0.0%) | June 30, 2026 |
| 19 | Voleon Capital Management LP | 0.23% | 473K | $629,498 | +370,609 (+360.9%) | June 30, 2026 |
| 20 | Amundi | 0.15% | 304K | $404,521 | +12,443 (+4.3%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 14 holders added 8.7M shares and 3 cut 1.6M.
PROK top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | NUMC B0-B | 1.64% | 3.4M | $4.6M | — | September 30, 2026 |
| 2 | iShares Russell 2000 ETF | 1.28% | 2.7M | $3.5M | −30,720 (−1.1%) | September 30, 2026 |
| 3 | Morgan Stanley Insight I | 0.54% | 1.1M | $1.5M | — | June 30, 2026 |
| 4 | BrighthouseI Morgan Stanley Discovery B | 0.52% | 1.1M | $1.4M | — | June 30, 2026 |
| 5 | GBM104 A | 0.48% | 1.0M | $1.3M | — | September 30, 2026 |
| 6 | Schwab US Small-Cap ETF™ | 0.40% | 836K | $1.1M | +558 (+0.1%) | September 30, 2026 |
| 7 | Fidelity Small Cap Index | 0.39% | 822K | $1.1M | +40,485 (+5.2%) | July 31, 2026 |
| 8 | Morgan Stanley Inst Discovery I | 0.39% | 821K | $1.1M | — | June 30, 2026 |
| 9 | GBM103 A | 0.36% | 750K | $997,500 | — | September 30, 2026 |
| 10 | GBM102 A | 0.34% | 700K | $931,000 | — | September 30, 2026 |
| 11 | iShares Russell 2000 Growth ETF | 0.33% | 688K | $914,568 | −870 (−0.1%) | September 30, 2026 |
| 12 | Vanguard Russell 2000 ETF | 0.31% | 639K | $850,397 | +206,754 (+47.8%) | September 30, 2026 |
| 13 | MS INVF Global Insight Z | 0.29% | 606K | $805,420 | — | June 30, 2026 |
| 14 | Simplify Propel Opportunities ETF | 0.23% | 484K | $643,376 | — | September 30, 2026 |
| 15 | Fidelity Extended Market Index | 0.19% | 392K | $521,728 | −2,108 (−0.5%) | August 31, 2026 |
| 16 | iShares Micro-Cap ETF | 0.16% | 344K | $457,370 | −2,372 (−0.7%) | September 30, 2026 |
| 17 | iShares Russell 2000 Value ETF | 0.15% | 306K | $407,269 | +464 (+0.2%) | September 30, 2026 |
| 18 | Morgan Stanley Inst Inception I | 0.14% | 292K | $388,945 | — | June 30, 2026 |
| 19 | EQ/Morgan Stanley Small Cap Growth K | 0.12% | 245K | $326,405 | — | August 31, 2026 |
| 20 | Virtus LifeSci Biotech Clinical Trls ETF | 0.09% | 193K | $257,350 | — | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
PROK insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-11-13 | Brian Jg Pereira | Sell | $2.37 | 502,136 | $1.2M |
| 2025-11-12 | Brian Jg Pereira | Sell | $2.72 | 255,026 | $693,671 |
| 2025-07-08 | Darin J. Weber | Sell | $3.02 | 103,480 | $312,510 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
PROK shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns PROK
Institutional investors own 26.5% of ProKidney's shares and insiders 46.45%. The largest holder is Suvretta Capital Management, LLC with 5.91% of the shares (12.3M), as of June 30, 2026. Among the top 20 institutions, 14 added shares and 3 reduced their stake in the latest filings. Short interest is 15.31% of the float, or 14.27 days of average trading volume. The share count rose 22.0% since 2020.
Related: PROK analyst forecast, PROK key metrics. See the PROK stock overview for the latest quote and news.
PROK ownership FAQ
Who owns the most ProKidney stock?
The largest shareholders of ProKidney are Suvretta Capital Management, LLC (5.91%), Morgan Stanley - Brokerage Accounts (4.72%), BlackRock Inc (2.49%), Geode Capital Management, LLC (1.14%), Bleichroeder LP (0.96%).
What percentage of ProKidney is owned by institutions?
Institutions hold 26.5% of ProKidney's shares outstanding; insiders hold 46.45%.
Which funds own ProKidney?
The largest fund holders of ProKidney are NUMC B0-B (1.64%), iShares Russell 2000 ETF (1.28%), Morgan Stanley Insight I (0.54%), BrighthouseI Morgan Stanley Discovery B (0.52%), GBM104 A (0.48%).
What is ProKidney's short interest?
23.8M shares of ProKidney were sold short, 15.31% of the float; at the average daily volume it would take 14.27 days to cover.
Are insiders buying or selling ProKidney?
Of the latest 3 reported insider transactions in ProKidney (since July 8, 2025), 0 were purchases and 3 were sales.
How many shares of ProKidney are outstanding?
ProKidney has 208.9M shares outstanding, of which 184.6M are in the public float.