VMC
Vulcan Materials CO
6 super-investors hold VMC worth a combined $726M. The largest position: John Armitage at 5.3% of their portfolio. This quarter the cohort logged 1 buy and 1 sell on the name. Cohort Conviction Score: 34 — ranked #229 of 724 scored stocks.
Why super-investors own VMC
John Armitage dominates this story: his $482M stake at 5.3% of portfolio accounts for roughly two-thirds of the cohort's $726M combined exposure, making VMC effectively an Armitage-driven position. He added further in 2026Q1, reinforcing his conviction, while Stephen Mandel trimmed modestly. The six-owner cohort is small but has been quietly building — owner count has doubled from two to four over the past three quarters, with no exits recorded. Wallace Weitz holds a meaningful 4.1% allocation, adding a second high-conviction voice. Joel Greenblatt and two others round out the group at negligible portfolio weights. Overall interest is rising, not fading, though the thesis remains concentrated in very few hands.
AI-synthesized from 13F filings. Not investment advice.
Cohort owners over time
2016Q2 → 2026Q1How many of the cohort members held this stock each quarter.
Owners (6) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | John Armitage | 5.3% | 14q | $482M | 1,769,216 |
| 2 | Joel Greenblatt | 0.1% | 38q | $139M | 508,715 |
| 3 | Wallace Weitz | 4.1% | 34q | $58M | 214,200 |
| 4 | Stephen Mandel | 0.3% | 6q | $39M | 144,179 |
| 5 | Dodge & Cox Funds | <0.1% | 40q | $7M | 24,000 |
| 6 | Thomas Russo | <0.1% | 39q | $2M | 7,263 |
Owners of VMC also hold
Recent activity (2)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Stephen Mandel | TRIM | 0.3% | -91% | $39M | May 15, 2026 |
| John Armitage | ADD | 5.3% | +84% | $482M | May 13, 2026 |
Long US equity 13F-HR filings only. CUSIP 929160109. Not investment advice.