Ticker · CUSIP 498894104

KNF

KNIFE RIVER CORP

Basic Materials·Building Materials

···Share

Holders (tracked)

Combined shares

7,149,556

Combined value

$502.97M

Last close

$89.12

Quarter

2025Q4

Price is +26.7% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$89.12-2.49 (-2.72%)H $102.89 · L $59.93 · Avg Vol 638K

Position opened

Tracked holders · last 8 quarters

+2 vs previous quarter over the last 8.

SEC event timeline

17 events

Ken Griffin (Citadel Advisors) added2026-02-17
+274,845 shares · 2025Q4
Position
Two Sigma Investments trimmed2026-02-17
−12,712 shares · 2025Q4
Position
Izzy Englander (Millennium Mgmt) trimmed2026-02-17
−8,513 shares · 2025Q4
Position
AQR Capital Management added2026-02-17
+6,948 shares · 2025Q4
Position
T. Rowe Price added2026-02-17
+123,594 shares · 2025Q4
Position
Renaissance Technologies opened position2026-02-12
+116,100 shares · 2025Q4
Position
Norges Bank (Norway SWF) opened position2026-02-10
+465,569 shares · 2025Q4
Position
Mario Gabelli (GAMCO) added2026-02-05
+13,449 shares · 2025Q4
Position
Baillie Gifford & Co trimmed2026-01-23
−70,370 shares · 2025Q4
Position
AQR Capital Management trimmed2025-11-14
−41,238 shares · 2025Q3
Position
Izzy Englander (Millennium Mgmt) opened position2025-11-14
+32,997 shares · 2025Q3
Position
Two Sigma Investments trimmed2025-11-14
−40,688 shares · 2025Q3
Position
T. Rowe Price added2025-11-14
+807,740 shares · 2025Q3
Position
Renaissance Technologies exited2025-11-13
−69,400 shares · 2025Q3
Position
Norges Bank (Norway SWF) exited2025-11-13
−652,372 shares · 2025Q3
Position
Mario Gabelli (GAMCO) added2025-11-12
+54,434 shares · 2025Q3
Position
Baillie Gifford & Co opened position2025-10-31
+2,198,771 shares · 2025Q3
Position

Insider activity

No insider transactions in the last 30 days.

View full insider history for KNF →

Follow-the-investor returns

If you'd copied each holder of KNF…

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
Norges Bank (Norway SWF)	2023Q2	$49.19	+81.2%	$41.5M
Renaissance Technologies	2023Q3	$65.48	+36.1%	$10.3M
Two Sigma Investments	2023Q3	$66.34	+34.3%	$2.0M
Ken Griffin (Citadel Advisors)	2023Q2	$70.51	+26.4%	$30.4M
Ken Griffin (Citadel Advisors)	2023Q2	$70.51	+26.4%	$30.4M
Ken Griffin (Citadel Advisors)	2023Q2	$70.51	+26.4%	$30.4M
Mario Gabelli (GAMCO)	2023Q2	$70.89	+25.7%	$8.5M
AQR Capital Management	2023Q2	$72.93	+22.2%	$2.2M
Izzy Englander (Millennium Mgmt)	2023Q2	$75.97	+17.3%	$2.2M
Baillie Gifford & Co	2025Q3	$76.87	+15.9%	$189.7M
T. Rowe Price	2023Q2	$83.61	+6.6%	$348.9M

Who moved on this name in 2025Q4

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

New positions2

Norges Bank (Norway SWF)
+465,569
$32.8M
Renaissance Technologies
+116,100
$8.2M

Added to4

Ken Griffin (Citadel Advisors)
+274,845
$19.3M
Mario Gabelli (GAMCO)
+13,449
$946K
AQR Capital Management
+6,948
$489K
T. Rowe Price
+123,594
$9K

Trimmed3

Baillie Gifford & Co
−70,370
$5.0M
Two Sigma Investments
−12,712
$894K
Izzy Englander (Millennium Mgmt)
−8,513
$599K

Exited0

—

Institutional ownership over time

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

Quarter	Holders	Shares	Combined value	Δ holders
2023Q2	8	7,763,751	$337.7M	—
2023Q3	12	8,449,119	$412.6M	+4
2023Q4	12	8,605,439	$569.5M	—
2024Q1	13	8,695,491	$705.0M	+1
2024Q2	13	8,689,047	$609.5M	—
2024Q3	11	1,605,331	$143.4M	-2
2024Q4	10	1,116,089	$113.4M	-1
2025Q1	9	2,077,288	$187.0M	-1
2025Q2	9	3,925,853	$320.5M	—
2025Q3	9	6,255,346	$480.8M	—
2025Q4	11	7,149,556	$503.0M	+2

Who owns KNF

11 super-investors · 2025Q4

Tracked stake

7.15M

Combined value

$503M

% of shares outstanding

—

shares-out unknown

Quarter action mix

New2Added6Trim3

#	Manager	Shares	Value	% of book	Last action
1	T. Rowe Price	3.92M	$275M	0.0%	Added+123.6K
2	Baillie Gifford & Co	2.13M	$150M	0.1%	Trim−70.4K
3	Norges Bank Norway SWF	465.6K	$33M	0.0%	New+465.6K
4	Ken Griffin Citadel Advisors	341.5K	$24M	0.0%	Added+274.8K
5	Renaissance Technologies	116.1K	$8M	0.0%	New+116.1K
6	Mario Gabelli GAMCO	95.3K	$7M	0.1%	Added+13.4K
7	Izzy Englander Millennium Mgmt	24.5K	$2M	0.0%	Trim−8.5K
8	AQR Capital Management	24.2K	$2M	0.0%	Added+6.9K
9	Two Sigma Investments	22.4K	$2M	0.0%	Trim−12.7K
10	Ken Griffin Citadel Advisors	8.3K	$584K	0.0%	Added+274.8K
11	Ken Griffin Citadel Advisors	8.1K	$570K	0.0%	Added+274.8K

Recent moves

20 transactions

ADDAQR Capital Management
+6,948 · 2025Q4
TRIMTwo Sigma Investments
−12,712 · 2025Q4
ADDT. Rowe Price
+123,594 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+274,845 · 2025Q4
TRIMIzzy Englander (Millennium Mgmt)
−8,513 · 2025Q4
NEWRenaissance Technologies
+116,100 · 2025Q4
NEWNorges Bank (Norway SWF)
+465,569 · 2025Q4
ADDMario Gabelli (GAMCO)
+13,449 · 2025Q4
TRIMBaillie Gifford & Co
−70,370 · 2025Q4
TRIMTwo Sigma Investments
−40,688 · 2025Q3
ADDT. Rowe Price
+807,740 · 2025Q3
NEWIzzy Englander (Millennium Mgmt)
+32,997 · 2025Q3
TRIMAQR Capital Management
−41,238 · 2025Q3
SOLDNorges Bank (Norway SWF)
−652,372 · 2025Q3
SOLDRenaissance Technologies
−69,400 · 2025Q3
ADDMario Gabelli (GAMCO)
+54,434 · 2025Q3
NEWBaillie Gifford & Co
+2,198,771 · 2025Q3
ADDT. Rowe Price
+1,315,975 · 2025Q2
SOLDIzzy Englander (Millennium Mgmt)
−2,433 · 2025Q2
ADDTwo Sigma Investments
+20,423 · 2025Q2

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