PROK · Prokidney Corp. · Shareholders & Ownership
$1.41
-0.02 (-1.40%)
At close · Oct 23
Return incl. dividend (before tax)
Going-concern doubt
— flagged Aug 10, 2026
Substantial doubt about the company's ability to continue as a going concern.
“Based on our current operating plan, we do not believe our existing cash and cash equivalents and marketable securities as of June 30, 2026, will be sufficient to fund our obligations for the 12 months following the issuance of the unaudited condensed consolidated financial statements included in this Quarterly Report on Form 10-Q on August 10, 2026. Accordingly, substantial doubt exists about our ability to continue as a going concern within one year after the date the unaudited condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10-Q are issued.”View the 10-Q filed Aug 10, 2026
Market Cap
$426.27M
Shares
302.32M
Volume · Oct 23
535.23K
Avg daily vol (3M)
1.3M
Every disclosed holder of PROK in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns PROK
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 47,693,523 | 15.78% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 73,842,723 | 24.43% |
| Remaining | 180,786,409 | 59.80% |
| Registered funds (N-PORT, not summed) | 11,312,042 | 3.74% |
Shares outstanding: 302,322,655, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of PROK
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Control Empresarial de Capitales S.A. de C.V.
13D
CIK 1273693 · Holding company · Apr 28, 2026
|
73,842,723 | ||
| 1.1 |
Control Empresarial de Capitales S.A. de C.V.
Insider
CIK 1273693 · Apr 28, 2026
10% Owner, issuer-wide, not summed
|
73,842,723 | ||
| 2 |
Legorreta Pablo G.
Insider
CIK 1507678 · Jun 3, 2025
Director, CEO, Chairman of the Board, issuer-wide, not summed
|
22,617,909 | ||
| 3 |
SUVRETTA CAPITAL MANAGEMENT, LLC
13F
CIK 1569064 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
12,341,266 | ||
| 4 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
9,854,178 | ||
| 4.1 |
MORGAN STANLEY
13G
CIK 895421 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
9,653,756 | ||
| 4.2 |
Morgan Stanley Insight Fund
Fund
S000002337 · Registered fund · Jun 30, 2026
Morgan Stanley Insight Fund, not summed
|
1,119,402 | ||
| 4.3 |
Discovery Portfolio
Fund
S000004127 · Registered fund · Jun 30, 2026
MORGAN STANLEY INSTITUTIONAL FUND TRUST, not summed
|
820,877 | ||
| 4.4 |
Inception Portfolio
Fund
S000002825 · Registered fund · Jun 30, 2026
MORGAN STANLEY INSTITUTIONAL FUND INC, not summed
|
292,440 | ||
| 4.5 |
Discovery Portfolio
Fund
S000004167 · Registered fund · Jun 30, 2026
MORGAN STANLEY VARIABLE INSURANCE FUND INC., not summed
|
170,911 | ||
| 5 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,197,227 | ||
| 5.1 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,723,961 | ||
| 5.2 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
461,051 | ||
| 5.3 |
iShares Micro-Cap ETF
Fund
S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
253,645 | ||
| 5.4 |
iShares Russell 2000 Value ETF
Fund
S000004342 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
207,932 | ||
| 5.5 |
Master Small Cap Index Series
Fund
S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
|
141,444 | ||
| 6 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,390,147 | ||
| 7 |
Bleichroeder LP
13F
CIK 1781002 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,000,000 | ||
| 8 |
Artia Global Partners LP
13F
CIK 1937964 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,806,939 | ||
| 9 |
Hennion & Walsh Asset Management, Inc.
13F
CIK 1861642 · Investment adviser · Sep 30, 2026
|
1,806,553 | ||
| 10 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,175,257 | ||
| 11 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,175,257 | ||
| 12 |
RENAISSANCE TECHNOLOGIES LLC
13F
CIK 1037389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,099,400 | ||
| 13 |
Morgan Stanley Discovery Portfolio
Fund
S000011089 · Registered fund · Jun 30, 2026
Brighthouse Funds Trust I, not summed
|
1,082,616 | ||
| 14 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,054,705 | ||
| 15 |
|
1,045,945 | ||
| 15.1 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
28,300 | ||
| 15.2 |
State Street Total Return V.I.S. Fund
Fund
S000001637 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
|
1,910 | ||
| 15.3 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
1,229 | ||
| 16 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
781,729 | ||
| 16.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
504,944 | ||
| 16.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
185,838 | ||
| 16.3 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
64,764 | ||
| 16.4 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
49,000 | ||
| 17 |
|
671,447 | ||
| 18 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
664,827 | ||
| 18.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
34,479 | ||
| 18.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
5,668 | ||
| 19 |
MYDA Advisors LLC
13F
CIK 1589689 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
640,775 | ||
| 20 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
632,149 | ||
| 21 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
545,158 | ||
| 22 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
517,082 | ||
| 23 |
Voleon Capital Management LP
13F
CIK 1479847 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
473,307 | ||
| 24 |
|
327,713 | ||
| 25 |
Amundi
13F
CIK 1330387 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
304,151 | ||
| 26 |
GSA CAPITAL PARTNERS LLP
13F
CIK 1362033 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
301,622 | ||
| 27 |
TWO SIGMA INVESTMENTS, LP
13F
CIK 1179392 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
273,259 | ||
| 28 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP
13F
CIK 1446194 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
252,906 | ||
| 29 |
EQ/Morgan Stanley Small Cap Growth Portfolio
Fund
S000044689 · Registered fund · Jun 30, 2026
EQ Advisors Trust, not summed
|
212,719 | ||
| 30 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
203,006 | ||
| 30.1 |
Goldman Sachs Absolute Return Tracker Fund
Fund
S000020314 · Registered fund · Aug 31, 2026
GOLDMAN SACHS TRUST, not summed
|
43,761 | ||
| 31 |
Virtus Investment Advisers, LLC
13F
CIK 19481 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
199,510 | ||
| 31.1 |
Virtus Biotech Clinical Trials Etf
Fund
S000047353 · Registered fund · Jul 31, 2026
ETFis Series Trust I, not summed
|
189,520 | ||
| 32 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
176,657 | ||
| 33 |
Squarepoint Ops LLC
13F
CIK 1642575 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
111,763 | ||
| 34 |
|
101,461 | ||
| 34.1 |
Nuveen Small Cap Blend Index Fund
Fund
S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
101,461 | ||
| 35 |
Susquehanna Portfolio Strategies, LLC
13F
CIK 1996449 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
97,378 | ||
| 36 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
84,206 | ||
| 36.1 |
Fidelity Small Cap Index Fund
Fund
S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
822,120 | ||
| 36.2 |
Fidelity Extended Market Index Fund
Fund
S000006021 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
534,209 | ||
| 36.3 |
Fidelity Total Market Index Fund
Fund
S000006026 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
192,034 | ||
| 36.4 |
Fidelity Series Total Market Index Fund
Fund
S000065248 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
157,889 | ||
| 36.5 |
Fidelity Nasdaq Composite Index Fund
Fund
S000055366 · Registered fund · May 31, 2026
Fidelity Concord Street Trust, not summed
|
86,948 | ||
| 37 |
EQ/2000 Managed Volatility Portfolio
Fund
S000025800 · Registered fund · Jun 30, 2026
EQ Advisors Trust, not summed
|
79,504 | ||
| 38 |
DEUTSCHE BANK AG\
13F
CIK 948046 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
75,373 | ||
| 38.1 |
DWS Small Cap Index VIP
Fund
S000006223 · Registered fund · Jun 30, 2026
DEUTSCHE DWS INVESTMENTS VIT FUNDS, not summed
|
11,819 | ||
| 39 |
WELLS FARGO & COMPANY/MN
13F
CIK 72971 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
67,262 | ||
| 40 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
62,039 | ||
| 40.1 |
T. Rowe Price Small-Cap Index Fund
Fund
S000051327 · Registered fund · Jun 30, 2026
T. ROWE PRICE INDEX TRUST, INC., not summed
|
11,407 | ||
| 41 |
LVIP State Street Small-Cap Index Fund
Fund
S000015974 · Registered fund · Jun 30, 2026
LINCOLN VARIABLE INSURANCE PRODUCTS TRUST, not summed
|
58,400 | ||
| 42 |
RHUMBLINE ADVISERS
13F
CIK 1115418 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
54,101 | ||
| 43 |
NEW YORK STATE COMMON RETIREMENT FUND
13F
CIK 810265 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
45,600 | ||
| 44 |
Invesco Ltd.
13F
CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
40,719 | ||
| 45 |
JANE STREET GROUP, LLC
13F
CIK 1595888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
39,941 | ||
| 46 |
Abel Hall, LLC
13F
CIK 2013339 · Unknown · Sep 30, 2026
|
39,747 | ||
| 47 |
AXQ CAPITAL, LP
13F
CIK 1916908 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
37,430 | ||
| 48 |
|
35,386 | ||
| 49 |
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.
13F
CIK 1705339 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
34,842 | ||
| 49.1 |
Global X Russell 2000 ETF
Fund
S000085029 · Registered fund · Jul 31, 2026
GLOBAL X FUNDS, not summed
|
36,158 | ||
| 50 |
Vanguard Global Advisers, LLC
13F
CIK 1811242 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
34,074 |
11 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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Key facts
CIK
1850270
CUSIP
74291D104
13F (30d)
12 filings
12 filers
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