Joel Ackerman is CFO & Treasurer at DAVITA INC. (DVA). They have made 11 open-market trades across 3 companies since 2012, most recently 2026-10-15.
CIK 0001220630
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
6 open-market purchases totalling $293K since 2013, against 5 sales. Across 6 scored buys the stock is up 65.1% at ninety days, and 60.4 points ahead of the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| DVA | 132,434 | $24.8M |
| CSBR | 1,126,333 | $5.5M |
| KND | 75,167 | — |
| Total | $30.3M |
Shares reported on the most recent Form 4, priced at the 2026-10-16 close. 1 holding could not be priced and is excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 50% | 100% |
| Avg Move | -2.1% | +2.1% | +65.1% |
| Alpha | -0.9% | +1.7% | +60.4% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DVA | SELL | 2026-05-07 | 2026-05-11 | $192.10 | $9.9M | +0.4% | +0.3% | -7.3% |
| DVA | SELL | 2024-08-27 | 2024-08-29 | $155.06 | $21.3M | +0.7% | +7.2% | +8.3% |
| DVA | SELL | 2021-08-05 | 2021-08-06 | $131.36 | $9.9M | -1.7% | -1.7% | -21.7% |
| CSBR | SELL | 2018-10-01 | 2018-10-03 | $17.02 | $767K | -10.0% | -5.1% | -43.6% |
| CSBR | BUY | 2016-10-18 | 2016-10-20 | $1.70 | $5K | -11.2% | +1.1% | +92.2% |
| CSBR | BUY | 2016-10-13 | 2016-10-14 | $1.67 | $14K | -3.5% | +12.6% | +105.8% |
| CSBR | BUY | 2016-10-06 | 2016-10-07 | $1.63 | $17K | +2.4% | -1.6% | +95.5% |
| CSBR | BUY | 2016-09-23 | 2016-09-26 | $1.65 | $54 | -3.5% | -2.4% | +47.6% |
| CSBR | BUY | 2016-09-20 | 2016-09-21 | $1.68 | $7K | +0.4% | -2.0% | +44.2% |
| CSBR | BUY | 2013-01-28 | 2013-01-30 | $0.50 | $250K | +3.1% | +5.0% | +5.0% |
| CVH | SELL | 2012-12-03 | 2012-12-04 | $43.82 | $144K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.