PROKIDNEY CORP PROK
SHS CL A · Common Stock · CUSIP 74291D104
- SectorHealth care
- IndustryBiological Products, (No Diagnostic Substances)
- HeadquartersWinston-Salem, NC
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $2.04. Options: 5 managers hold calls ($604.9k notional), 3 hold puts ($116.1k).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q2 2025 | 6 |
| Q3 2025 | 55 |
| Q4 2025 | 62 |
| Q1 2026 | 70 |
| Q2 2026 | 70 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2025 | 53 | 6 |
| Q4 2025 | 39 | 25 |
| Q1 2026 | 33 | 30 |
| Q2 2026 | 47 | 32 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $485.0k | $1.4m | 2.87 |
| Q4 2025 | $395.1k | $836.0k | 2.12 |
| Q1 2026 | $73.7k | $89.7k | 1.22 |
| Q2 2026 | $604.9k | $116.1k | 0.19 |
Biggest buyers
| BlackRock, Inc. | Added | +3.8m |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +1.2m |
| MORGAN STANLEY | Added | +898.2k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | +517.1k |
| STATE STREET CORP | Added | +489.1k |
| NORTHERN TRUST CORP | Added | +423.2k |
| Voleon Capital Management LP | Added | +370.6k |
| UBS Group AG | Added | +336.9k |
| Hennion & Walsh Asset Management, Inc. | Added | +236.1k |
| MYDA Advisors LLC | Added | +212.0k |
Biggest sellers
| MILLENNIUM MANAGEMENT LLC | Reduced | -1.2m |
| MARSHALL WACE, LLP | Sold out | -1.0m |
| Woodline Partners LP | Sold out | -500.0k |
| ExodusPoint Capital Management, LP | Sold out | -254.4k |
| JANE STREET GROUP, LLC | Reduced | -224.3k |
| GOLDMAN SACHS GROUP INC | Reduced | -218.9k |
| BANK OF AMERICA CORP /DE/ | Reduced | -208.3k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -151.4k |
| BARCLAYS PLC | Reduced | -130.2k |
| HRT FINANCIAL LP | Sold out | -119.0k |
Biggest calls
| CITADEL ADVISORS LLC | Added | $199.7k97.9k shares |
| SIMPLEX TRADING, LLC | Added | $129.7k63.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $127.5k62.5k shares |
| JANE STREET GROUP, LLC | Added | $122.8k60.2k shares |
| GROUP ONE TRADING LLC | Added | $25.1k12.3k shares |
Biggest puts
| JANE STREET GROUP, LLC | Unchanged | $74.3k36.4k shares |
| CITADEL ADVISORS LLC | New | $35.9k17.6k shares |
| SIMPLEX TRADING, LLC | Reduced | $5.9k2.9k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
Control Empresarial de Capitales S.A. de C.V.
13D · may seek influence
filed 2026-04-30
Stated purposeDelaware Domestication On July 1, 2025, the Issuer effected a domestication from the Caymans Islands to the State of Delaware (the "Domestication"). Effective as of July 1, 2025, each (i) Class A ordinary share automatically converted into one share of Class A Common Stock of the Issuer and (ii) each Class B ordinary share automatically converted into one share of Class B common stock of the Issuer. Exchange Agreement Prior to April 28, 2026 (the "Transaction Date"), in addition to 10,724,078 shares of Class A Common Stock, the Reporting Persons beneficially owned 63,118,645 shares of Class B common stock of the Issuer held by Control Empresarial, each of which may, subject to the limitations set forth in the Amended and Restated Exchange Agreement and the Holdings LLCA (each as defined… Full filing |
36.0% |
Fell to 5% or below in the last year: MORGAN STANLEY (4.7%, 2026-08-12)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
| Q3 2025 | 0 | — | 1 | $312.5k | $312.5k |
| Q4 2025 | 0 | — | 1 | $1.9m | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 0 | — | — |
| Q3 2026 | 0 | — | 1 | $1.1m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-08-20 | Pereira Brian JG Director | Sold | $316.6k222.9k shares |
| 2026-08-20 | Pereira Brian JG Director | Sold | $38.4k27.1k shares |
| 2026-08-19 | Pereira Brian JG Director · By Brian J. G. Pereira 2012 Irrevocable Trust | Sold | $321.0k222.9k shares |
| 2026-08-19 | Pereira Brian JG Director | Sold | $39.0k27.1k shares |
| 2026-08-18 | Pereira Brian JG Director · By Brian J. G. Pereira 2012 Irrevocable Trust | Sold | $314.2k229.3k shares |
| 2026-08-18 | Pereira Brian JG Director | Sold | $38.1k27.8k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| MONTANOVA CAPITAL, LLC 0.53% of their portfolio | 12.3m $25.2m | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 9.9m $20.1m | Added +898.2k |
| BlackRock, Inc. 0.00% of their portfolio | 5.2m $10.6m | Added +3.8m |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 2.4m $4.9m | Added +1.2m |
| Bleichroeder LP 0.73% of their portfolio | 2.0m $4.1m | Unchanged |
| Hennion & Walsh Asset Management, Inc. 0.11% of their portfolio | 1.8m $3.8m | Added +236.1k |
| Artia Global Partners LP 0.70% of their portfolio | 1.8m $3.7m | Unchanged |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.2m $2.4m | Added +28.3k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 1.1m $2.2m | Reduced -151.4k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 1.1m $2.2m | Reduced -1.2m |
| STATE STREET CORP 0.00% of their portfolio | 1.0m $2.1m | Added +489.1k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 781.7k $1.6m | Added +154.0k |
| UBS Group AG 0.00% of their portfolio | 671.4k $1.4m | Added +336.9k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 664.8k $1.4m | Added +423.2k |
| MYDA Advisors LLC 0.32% of their portfolio | 640.8k $1.3m | Added +212.0k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 632.1k $1.3m | Added +93.8k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 545.2k $1.1m | Reduced -208.3k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio | 517.1k $1.1m | New |
| Voleon Capital Management LP 0.02% of their portfolio | 473.3k $965.5k | Added +370.6k |
| Amundi 0.00% of their portfolio | 304.2k $620.5k | Added +12.4k |
| GSA CAPITAL PARTNERS LLP 0.04% of their portfolio | 301.6k $615.0k | Added +98.4k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 273.3k $557.4k | Reduced -73.1k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 252.9k $515.9k | Added +48.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 203.0k $414.1k | Reduced -218.9k |
| Virtus Investment Advisers, LLC 0.09% of their portfolio | 199.5k $407.0k | Added +76.1k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 176.7k $360.4k | Added +165.5k |
| Squarepoint Ops LLC 0.00% of their portfolio | 111.8k $228.0k | Reduced -99.3k |
| Nuveen, LLC 0.00% of their portfolio | 101.5k $207.0k | New |
| Susquehanna Portfolio Strategies, LLC 0.00% of their portfolio | 97.4k $198.7k | Unchanged |
| FMR LLC 0.00% of their portfolio | 84.2k $171.8k | Added +74.0k |
| Abel Hall, LLC 0.03% of their portfolio | 75.9k $154.9k | New |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 75.4k $153.8k | New |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 67.3k $137.2k | New |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 62.0k $127.0k | New |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 54.1k $110.4k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 45.6k $93.0k | New |
| Invesco Ltd. 0.00% of their portfolio | 40.7k $83.1k | New |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 39.9k $81.5k | Reduced -224.3k |
| AXQ CAPITAL, LP 0.01% of their portfolio | 37.4k $76.4k | New |
| CITIGROUP INC 0.00% of their portfolio | 35.4k $72.2k | Reduced -14.0k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio | 34.8k $71.1k | New |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 34.1k $69.5k | Unchanged |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 32.1k $60.7k | Added +31.4k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.00% of their portfolio | 28.2k $57.5k | New |
| Virtus Family Office LLC 0.04% of their portfolio | 27.5k $56.1k | Unchanged |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 26.8k $47.9k | New |
| Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio | 25.3k $51.6k | New |
| FNY Investment Advisers, LLC 0.02% of their portfolio | 21.0k $42.0k | Added +20.0k |
| R Squared Ltd 0.02% of their portfolio | 17.8k $36.4k | Added +4.1k |
| INTECH INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 16.9k $34.6k | New |
| BARCLAYS PLC 0.00% of their portfolio | 16.1k $32.9k | Reduced -130.2k |
| LETKO, BROSSEAU & ASSOCIATES INC 0.00% of their portfolio | 15.9k $32.4k | Unchanged |
| Callan Family Office, LLC 0.00% of their portfolio | 13.4k $27.3k | Unchanged |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 12.3k $25.1k | Added +8.2k |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 10.9k $22.2k | New |
| EP Wealth Advisors, LLC 0.00% of their portfolio | 10.0k $20.4k | New |
| Legal & General Group Plc 0.00% of their portfolio | 7.4k $15.1k | New |
| Ameritas Investment Partners, Inc. 0.00% of their portfolio | 6.9k $14.0k | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 6.0k $12.3k | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 4.8k $9.8k | Reduced -15.6k |
| IFP Advisors, Inc 0.00% of their portfolio | 3.0k $6.1k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 2.5k $5.0k | Added +2.3k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 950 $1.9k | Unchanged |
| Sterling Capital Management LLC 0.00% of their portfolio | 658 $1.3k | New |
| Basecamp Wealth Advisors LLC 0.00% of their portfolio | 586 $1.2k | Unchanged |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 305 $622 | Added +5 |
| Caitong International Asset Management Co., Ltd 0.00% of their portfolio | 224 $457 | Reduced -10.8k |
| Arax Advisory Partners 0.00% of their portfolio | 184 $375 | Added +123 |
| JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio | 100 $183 | Unchanged |
| SIGNATUREFD, LLC 0.00% of their portfolio | 75 $153 | Unchanged |