PROK · Prokidney Corp.

$1.96 -0.05 (-2.49%)

Russell 2000 member Rebalance outlook locked

Market Cap

$607.67M

302.32M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 71

Total Value: $97,982,075

Total Shares: 48,030,449

Institutional Ownership Trend

10 quarters

Holder Concentration

Across 71 13F filers · Δ vs Mar 31, 2026

Top Holder

25.7%

−3.2 pts

Top 5

66.2%

+2.1 pts

Top 10

80.7%

+1.1 pts

HHI

1,306

Broadly held−106

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: 0

Institutional value: +28.1%

Shares held: +12.4%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+3,810,111	5,197,227
Mega GEODE CAPITAL MANAGEMENT, LLC	+1,159,738	2,390,147
Mega MORGAN STANLEY	+898,211	9,854,178
Mega STATE STREET CORP	+489,100	1,045,945
Mega NORTHERN TRUST CORP	+423,247	664,827

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega MILLENNIUM MANAGEMENT LLC	−1,216,872	1,054,705
Mega GOLDMAN SACHS GROUP INC	−218,896	203,006
Mega BANK OF AMERICA CORP /DE/	−208,254	545,158
Mega JANE STREET GROUP, LLC	−176,744	136,541
Large RENAISSANCE TECHNOLOGIES LLC	−151,394	1,099,400

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega VANGUARD PORTFOLIO MANAGEMENT LLC	517,082	$1,054,847
Mega Nuveen, LLC	101,461	$206,980
Small Abel Hall, LLC	75,934	$154,905
Mega DEUTSCHE BANK AG\	75,373	$153,760
Mega WELLS FARGO & COMPANY/MN	67,262	$137,214

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Large MARSHALL WACE, LLP	1,011,744	$1,811,021
Large Woodline Partners LP	500,000	$895,000
Large ExodusPoint Capital Management, LP	254,353	$455,291
Large HRT FINANCIAL LP	118,981	$212,975
Small EntryPoint Capital, LLC	82,862	$148,322

Filter: New 22 Increased 26 Reduced 11 Sold out 22 Unchanged 12

Showing 75 of 75

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

SUVRETTA CAPITAL MANAGEMENT, LLC

$25,176,182

25.69%

12,341,266

MORGAN STANLEY

$20,102,519

20.52%

9,854,178

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	82	$167	0.0%	Defined
MORGAN STANLEY & CO. LLC	22,078	$45,039	0.2%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	5,684	$11,595	0.1%	Defined
MORGAN STANLEY INVESTMENT MANAGEMENT INC	9,642,992	$19,671,702	97.9%	Defined
MORGAN STANLEY SMITH BARNEY LLC	179,445	$366,067	1.8%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	3,897	$7,949	0.0%	Defined

BlackRock, Inc.

$10,602,341

10.82%

5,197,227

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	14,674	$29,934	0.3%	Sole
BlackRock Investment Management, LLC	219,925	$448,647	4.2%	Sole
BLACKROCK ADVISORS LLC	173,726	$354,401	3.3%	Sole
BlackRock Fund Advisors	2,599,993	$5,303,985	50.0%	Sole
BlackRock Institutional Trust Company, N.A.	2,188,904	$4,465,364	42.1%	Sole
Aperio Group, LLC	5	$10	0.0%	Sole

GEODE CAPITAL MANAGEMENT, LLC

$4,875,899

4.98%

2,390,147

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	350,417	$714,850	14.7%	Defined
Held directly	2,039,730	$4,161,049	85.3%	Defined

Bleichroeder LP

$4,080,000

4.16%

2,000,000

Hennion & Walsh Asset Management, Inc.

$3,769,407

3.85%

1,847,749

Artia Global Partners LP

$3,686,155

3.76%

1,806,939

VANGUARD CAPITAL MANAGEMENT LLC

$2,397,524

2.45%

1,175,257

RENAISSANCE TECHNOLOGIES LLC

$2,242,776

2.29%

1,099,400

MILLENNIUM MANAGEMENT LLC

$2,151,598

2.20%

1,054,705

STATE STREET CORP

$2,133,727

2.18%

1,045,945

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SSGA FUNDS MANAGEMENT, INC. joint	1,045,945	$2,133,727	100.0%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$1,594,727

1.63%

781,729

UBS Group AG

$1,369,751

1.40%

671,447

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	25,991	$53,021	3.9%	Defined
UBS AG	591,856	$1,207,386	88.1%	Defined
UBS Switzerland AG	53,600	$109,344	8.0%	Defined

NORTHERN TRUST CORP

$1,356,246

1.38%

664,827

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	653,008	$1,332,136	98.2%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	11,819	$24,110	1.8%	Other

MYDA Advisors LLC

$1,307,181

1.33%

640,775

VANGUARD FIDUCIARY TRUST CO

$1,289,583

1.32%

632,149

BANK OF AMERICA CORP /DE/

$1,112,121

1.14%

545,158

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	44,086	$89,935	8.1%	Defined
MERRILL LYNCH, PIERCE, FENNER & SMITH INC.	457,500	$933,300	83.9%	Defined
BOFA SECURITIES, INC.	43,572	$88,886	8.0%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$1,054,847

1.08%

517,082

Voleon Capital Management LP

$965,546

0.99%

473,307

Amundi

$620,468

0.63%

304,151

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CPR Asset Management	304,151	$620,468	100.0%	Defined

GSA CAPITAL PARTNERS LLP

$615,308

0.63%

301,622

TWO SIGMA INVESTMENTS, LP

$557,448

0.57%

273,259

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$515,928

0.53%

252,906

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	252,906	$515,928	100.0%	Other

GOLDMAN SACHS GROUP INC

$414,131

0.42%

203,006

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	176,770	$360,610	87.1%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	26,236	$53,521	12.9%	Defined

Virtus Investment Advisers, LLC

$407,000

0.42%

199,510

Bank of New York Mellon Corp

$360,379

0.37%

176,657

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	54,889	$111,973	31.1%	Defined
The Bank of New York Mellon	121,767	$248,404	68.9%	Defined
Held directly	1	$2	0.0%	Defined

Squarepoint Ops LLC

$227,996

0.23%

111,763

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	111,763	$227,996	100.0%	Defined

Nuveen, LLC

$206,980

0.21%

101,461

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TEACHERS ADVISORS, LLC joint	101,461	$206,980	100.0%	Defined

CITADEL ADVISORS LLC

$199,716

0.20%

97,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	97,900	$199,716	100.0%	Defined

Susquehanna Portfolio Strategies, LLC

$198,651

0.20%

97,378

FMR LLC

$171,780

0.18%

84,206

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	84,206	$171,780	100.0%	Defined

Abel Hall, LLC

$154,905

0.16%

75,934

DEUTSCHE BANK AG\

$153,760

0.16%

75,373

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	1,551	$3,164	2.1%	Defined
DWS Investments UK Ltd	73,822	$150,596	97.9%	Defined

WELLS FARGO & COMPANY/MN

$137,214

0.14%

67,262

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	67,262	$137,214	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$127,500

0.13%

62,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	62,500	$127,500	100.0%	Other

PRICE T ROWE ASSOCIATES INC /MD/

$126,559

0.13%

62,039

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	62,039	$126,559	100.0%	Defined

JANE STREET GROUP, LLC

$122,808

0.13%

60,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	60,200	$122,808	100.0%	Defined

RHUMBLINE ADVISERS

$110,366

0.11%

54,101

NEW YORK STATE COMMON RETIREMENT FUND

$93,024

0.09%

45,600

Invesco Ltd.

$83,064

0.08%

40,719

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	10,545	$21,510	25.9%	Defined
Invesco Trust Co joint	30,174	$61,554	74.1%	Defined

JANE STREET GROUP, LLC

$81,478

0.08%

39,941

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	39,923	$81,442	100.0%	Defined
Jane Street Global Trading, LLC	18	$36	0.0%	Defined

AXQ CAPITAL, LP

$76,357

0.08%

37,430

JANE STREET GROUP, LLC

$74,256

0.08%

36,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	36,400	$74,256	100.0%	Defined

CITIGROUP INC

$72,186

0.07%

35,386

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	35,386	$72,186	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$71,077

0.07%

34,842

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	34,842	$71,077	100.0%	Defined

Vanguard Global Advisers, LLC

$69,510

0.07%

34,074

JPMORGAN CHASE & CO

$65,534

0.07%

32,125

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	31,369	$63,992	97.6%	Defined
J.P. Morgan Markets Ltd	756	$1,542	2.4%	Defined

CANADA PENSION PLAN INVESTMENT BOARD

$57,528

0.06%

28,200

Virtus Family Office LLC

$56,100

0.06%

27,500

ALLIANCEBERNSTEIN L.P.

$54,590

0.06%

26,760

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	26,760	$54,590	100.0%	Defined

Police & Firemen's Retirement System of New Jersey

$51,632

0.05%

25,310

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	25,310	$51,632	100.0%	Defined

FNY Investment Advisers, LLC

$42,840

0.04%

21,000

R Squared Ltd

$36,356

0.04%

17,822

CITADEL ADVISORS LLC

$35,904

0.04%

17,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	17,600	$35,904	100.0%	Defined

INTECH INVESTMENT MANAGEMENT LLC

$34,561

0.04%

16,942

BARCLAYS PLC

$32,886

0.03%

16,121

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	11,096	$22,635	68.8%	Defined
BARCLAYS CAPITAL INC.	5,025	$10,251	31.2%	Defined

LETKO, BROSSEAU & ASSOCIATES INC

$32,436

0.03%

15,900

Callan Family Office, LLC

$27,323

0.03%

13,394

BNP PARIBAS ARBITRAGE, SA

$25,094

0.03%

12,301

PRUDENTIAL FINANCIAL INC

$22,195

0.02%

10,880

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PGIM Quantitative Solutions LLC	10,880	$22,195	100.0%	Defined

EP Wealth Advisors, LLC

$20,400

0.02%

10,000

Legal & General Group Plc

$15,116

0.02%

7,410

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	7,410	$15,116	100.0%	Defined

Ameritas Investment Partners, Inc.

$14,008

0.01%

6,867

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	6,867	$14,008	100.0%	Other

Russell Investments Group, Ltd.

$12,342

0.01%

6,050

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	6,050	$12,342	100.0%	Defined

Tower Research Capital LLC (TRC)

$9,836

0.01%

4,822

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	17	$34	0.3%	Other
Latour Trading LLC (Latour)	4,805	$9,802	99.7%	Defined

IFP Advisors, Inc

$6,120

0.01%

3,000

ROYAL BANK OF CANADA

$5,010

0.01%

2,456

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	2,405	$4,906	97.9%	Defined
Held directly	51	$104	2.1%	Sole

OSAIC HOLDINGS, INC.

$1,938

0.00%

950

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	950	$1,938	100.0%	Defined

Sterling Capital Management LLC

$1,342

0.00%

658

Basecamp Wealth Advisors LLC

$1,195

0.00%

586

SBI Securities Co., Ltd.

$622

0.00%

305

Caitong International Asset Management Co., Ltd

$456

0.00%

224

Arax Advisory Partners

$375

0.00%

184

JONES FINANCIAL COMPANIES LLLP

$204

0.00%

100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	100	$204	100.0%	Sole

SIGNATUREFD, LLC

$153

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	1,011,744	$1,811,021	100.0%	Other

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard US Investment Management, LP	64,153	$114,833	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Hudson Bay Capital UK LLP	62,084	$111,130	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Thakore Nainoor	47,827	$85,610	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JEFFERIES LLC	46,398	$83,052	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jump Trading Holdings, LLC joint	18,540	$33,186	100.0%	Defined

Key facts CIK 1850270 CUSIP 74291D104 13F (30d) 51 filings 51 filers Visit website Investor relations