Amrize (AMRZ) Held by Superinvestors
Amrize, Ltd. (AMRZ) is currently held by 3 superinvestors tracked by InsiderSet, with a combined reported market value of approximately $61.73M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Renaissance Technologies LLC is currently the largest disclosed institutional shareholder of AMRZ tracked by InsiderSet, reporting ownership valued at approximately $57.83M 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 $46.99M, representing an estimated loss of -18.74% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 100% of the total disclosed AMRZ value among the investors covered in this analysis. Major shareholders include Renaissance Technologies LLC, Cullen Value Fund, Sequoia Financial Advisors, and several other long-term asset managers with concentrated positions in Amrize, Ltd. (AMRZ).
This page ranks the largest institutional AMRZ 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 |
|---|---|---|---|---|---|---|---|
| Renaissance Technologies LLC | Jim Simons | 0.08% | 1,085,000 | $57,830,500 | $46,991,350 | -$10,839,150 | -18.74% |
| Cullen Value Fund | Jim Cullen | 0.39% | 93,245 | $3,365,329 | $4,038,441 | +$673,112 | +20.00% |
| Sequoia Financial Advisors | 0.00% | 10,070 | $536,731 | $436,132 | -$100,599 | -18.74% |
Frequently asked questions about AMRZ
Who are the largest superinvestors holding AMRZ?
The largest superinvestors holding AMRZ in the latest SEC Form 13F filings include Renaissance Technologies LLC, Cullen Value Fund, and Sequoia Financial Advisors. InsiderSet ranks these superinvestors by their latest reported AMRZ position.
What does the AMRZ superinvestors page include?
This page tracks AMRZ positions reported by a curated group of notable institutional investors and fund managers through SEC Form 13F. Amrize, Ltd. (AMRZ) on this page reflects disclosed 13F holdings among those superinvestors, not every institutional shareholder of the stock.
How many superinvestors hold AMRZ?
InsiderSet currently tracks 3 superinvestors reporting AMRZ holdings in the latest available 13F data. This is the curated set on this page, not the total number of institutions that own AMRZ.
How much AMRZ stock do superinvestors hold?
Superinvestors tracked by InsiderSet disclosed approximately $61.73M in AMRZ 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 AMRZ superinvestor holdings last updated?
The latest AMRZ 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 AMRZ 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 AMRZ position after the reporting date.
Are superinvestors buying or selling AMRZ?
Buying and selling can be analyzed by comparing AMRZ positions across consecutive 13F reporting periods. InsiderSet's AMRZ Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View AMRZ ownership changes.
How have superinvestor AMRZ holdings changed over time?
InsiderSet tracks AMRZ holdings among these superinvestors across multiple 13F reporting periods, so holder counts, reported value, and reported shares can be compared over time.