Knife River (KNF) Held by Superinvestors
KNIFE RIVER CORP (KNF) is currently held by 1 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $10.74M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Mairs & Power Growth Fund is currently the largest disclosed institutional shareholder of KNF tracked by InsiderSet, reporting ownership valued at approximately $10.74M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $6.40M, representing an estimated loss of -40.42% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed KNF value among the investors covered in this analysis. Major shareholders include Mairs & Power Growth Fund, and several other long-term asset managers with concentrated positions in KNIFE RIVER CORP (KNF).
This page ranks the largest institutional KNF shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Mairs & Power Growth Fund | Andrew R. Adams | 0.10% | 128,377 | $10,738,736 | $6,398,310 | -$4,340,426 | -40.42% |
Frequently asked questions about KNF
Who are the largest superinvestors holding KNF?
The largest superinvestors holding KNF in the latest SEC Form 13F filings include Mairs & Power Growth Fund. InsiderSet ranks these superinvestors by their latest reported KNF position.
What does the KNF superinvestors page include?
This page tracks KNF positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. KNIFE RIVER CORP (KNF) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold KNF?
InsiderSet currently tracks 1 superinvestors reporting KNF holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own KNF.
How much KNF stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $10.74M in KNF holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value, and it covers the curated superinvestors on this page rather than every institutional filer.
When were KNF superinvestor holdings last updated?
The latest KNF superinvestor holdings on InsiderSet are based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time holdings.
Are superinvestor KNF holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by these superinvestors as of the end of the reporting quarter. A superinvestor may have changed its KNF position after the reporting date.
Are superinvestors buying or selling KNF?
Buying and selling can be analyzed by comparing KNF positions across consecutive 13F reporting periods. InsiderSet's KNF Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View KNF ownership changes.
How have superinvestor KNF holdings changed over time?
InsiderSet tracks KNF holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.