IBM
Intl Business Machines Corp
4 super-investors hold IBM worth a combined $101M. The largest position: Joel Greenblatt at 0.1% of their portfolio. This quarter the cohort logged 0 buys and 1 sell on the name. Cohort Conviction Score: 24 — ranked #577 of 724 scored stocks. Conviction easing: 1 fewer super-investor hold it than in 2025Q4.
Why super-investors own IBM
Cohort interest in IBM is thin and drifting lower. Only four of the roughly 80 tracked super-investors hold the stock, and the positions are uniformly small — the highest portfolio concentration is just 0.1%, belonging to Joel Greenblatt, whose $89M stake accounts for the bulk of the cohort's $101M combined exposure. Kahn Brothers and Mairs & Power hold nominal positions, and Dodge & Cox rounds out the group at $11M. No one added or initiated in 2026Q1; the sole activity was Thomas Russo exiting entirely. The eight-quarter owner-count trajectory — peaking briefly at two before falling back to one core holder — reflects fading rather than building conviction across this cohort.
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 (4) · click any column to sort
| #↑ | Manager | % Port. | History | Value | Shares |
|---|---|---|---|---|---|
| 1 | Joel Greenblatt | 0.1% | 39q | $89M | 367,164 |
| 2 | Dodge & Cox Funds | <0.1% | 40q | $11M | 46,587 |
| 3 | Mairs & Power Funds | <0.1% | 37q | $884K | 3,647 |
| 4 | Kahn Brothers Group | 0.1% | 13q | $298K | 1,228 |
Owners of IBM also hold
Recent activity (1)
| Manager | Move | % Port. | Δ Shares | Value | Filed |
|---|---|---|---|---|---|
| Thomas Russo | EXIT | <0.1% | -100% | $0 | May 13, 2026 |
Long US equity 13F-HR filings only. CUSIP 459200101. Not investment advice.