ALK
Alaska Air Group Inc
3 super-investors hold ALK worth a combined $185M. The largest position: Christopher Bloomstran at 7.4% of their portfolio. This quarter the cohort logged 1 buy and 0 sells on the name. Cohort Conviction Score: 38 — ranked #159 of 724 scored stocks.
Why super-investors own ALK
Christopher Bloomstran dominates the cohort's interest in ALK, carrying it at 7.4% of his portfolio — a meaningful conviction bet — and adding to the position in 2026Q1. Sarah Ketterer holds the largest dollar stake at $92M but at a far lower 1.1% portfolio weight, while Joel Greenblatt's $31M position is effectively a rounding error in his diversified book. The ownership story here is narrow: the cohort count has held at just one dedicated owner (Bloomstran) for eight consecutive quarters before Ketterer and Greenblatt appeared, and no one trimmed or exited this quarter. With zero new entrants and no exits, interest is stable but tightly concentrated rather than broadly building.
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 (3) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Sarah Ketterer | 1.1% | 9q | $92M | 2,502,211 |
| 2 | Christopher Bloomstran | 7.4% | 25q | $62M | 1,695,062 |
| 3 | Joel Greenblatt | <0.1% | 39q | $31M | 831,666 |
Owners of ALK also hold
Recent activity (1)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Christopher Bloomstran | ADD | 7.4% | +314% | $62M | May 15, 2026 |
Long US equity 13F-HR filings only. CUSIP 011659109. Not investment advice.