Ticker · CUSIP 74291D104

PROK

PROKIDNEY CORP

···Share

Holders (tracked)

Combined shares

3,647,734

Combined value

$8.17M

Last close

$2.18

Quarter

2025Q4

Price is -2.7% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$2.18+1.39 (+175.60%)H $5.18 · L $0.56 · Avg Vol 4.3M

Position opened

Tracked holders · last 8 quarters

+1 vs previous quarter over the last 2.

SEC event timeline

8 events

Ken Griffin (Citadel Advisors) added2026-02-17
+27,008 shares · 2025Q4
Position
Two Sigma Investments added2026-02-17
+366,227 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−121,842 shares · 2025Q4
Position
Steve Cohen (Point72) opened position2026-02-17
+17,087 shares · 2025Q4
Position
Renaissance Technologies added2026-02-12
+763,705 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) opened position2025-11-14
+1,956,378 shares · 2025Q3
Position
Two Sigma Investments opened position2025-11-14
+99,282 shares · 2025Q3
Position
Renaissance Technologies opened position2025-11-13
+132,000 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for PROK →

Follow-the-investor returns

If you'd copied each holder of PROK…

Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Steve Cohen (Point72)	2025Q4	$2.24	-2.7%	$37K
Ken Griffin (Citadel Advisors)	2025Q3	$2.26	-3.7%	$34K
Ken Griffin (Citadel Advisors)	2025Q3	$2.26	-3.7%	$34K
Ken Griffin (Citadel Advisors)	2025Q3	$2.26	-3.7%	$34K
Renaissance Technologies	2025Q3	$2.27	-3.8%	$2.0M
Two Sigma Investments	2025Q3	$2.28	-4.3%	$1.0M
Izzy Englander (Millennium Mgmt)	2025Q3	$2.42	-9.9%	$4.0M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions1

Steve Cohen (Point72)
+17,087
$38K

Added to3

Renaissance Technologies
+763,705
$1.7M
Two Sigma Investments
+366,227
$820K
Ken Griffin (Citadel Advisors)
+27,008
$60K

Trimmed1

Izzy Englander (Millennium Mgmt)
−121,842
$273K

Exited0

—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2025Q3	6	2,644,349	$6.4M	—
2025Q4	7	3,647,734	$8.2M	+1

Who owns PROK

7 super-investors · 2025Q4

Tracked stake

3.65M

Combined value

$8M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New1Added5Trim1

#	Manager	Shares	Value	% of book	Last action	8Q trend
1	Izzy Englander Millennium Mgmt	1.83M	$4M	0.0%	Trim−121.8K
2	Renaissance Technologies	895.7K	$2M	0.0%	Added+763.7K
3	Two Sigma Investments	465.5K	$1M	0.0%	Added+366.2K
4	Ken Griffin Citadel Advisors	371.8K	$833K	0.0%	Added+27.0K
5	Ken Griffin Citadel Advisors	47.6K	$107K	0.0%	Added+27.0K
6	Steve Cohen Point72	17.1K	$38K	0.0%	New+17.1K	—
7	Ken Griffin Citadel Advisors	15.5K	$35K	0.0%	Added+27.0K

Recent moves

8 transactions

ADDKen Griffin (Citadel Advisors)
+27,008 · 2025Q4
ADDTwo Sigma Investments
+366,227 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−121,842 · 2025Q4
NEWSteve Cohen (Point72)
+17,087 · 2025Q4
ADDRenaissance Technologies
+763,705 · 2025Q4
NEWIzzy Englander (Millennium Mgmt)
+1,956,378 · 2025Q3
NEWTwo Sigma Investments
+99,282 · 2025Q3
NEWRenaissance Technologies
+132,000 · 2025Q3

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