Heather E. Brilliant is CEO at DIAMOND HILL INVESTMENT GROUP INC (DHIL). They have made 10 open-market trades across 1 company since 2019, most recently 2026-04-01.
CIK 0001787213
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.
9 open-market purchases totalling $621K since 2019, against 1 sale. Across 9 scored buys the stock is up 7.1% at ninety days, and 0.8 points behind the S&P over the same stretch.
9 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| DHIL | 66,680 | $11.7M |
Shares reported on the most recent Form 4, priced at the 2026-04-06 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 67% | 78% | 78% |
| Avg Move | -0.9% | +3.9% | +7.1% |
| Alpha | -1.1% | +0.1% | -0.8% |
| Scored | 9 | 9 | 9 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DHIL | BUY | 2024-06-27 | 2024-07-01 | $139.72 | $77K | +2.7% | +11.2% | +12.9% |
| DHIL | BUY | 2023-11-02 | 2023-11-03 | $149.48 | $49K | +8.4% | +8.0% | +3.8% |
| DHIL | BUY | 2022-04-28 | 2022-05-02 | $172.01 | $253K | +2.2% | +5.8% | +11.5% |
| DHIL | SELL | 2022-04-01 | 2022-04-01 | $187.30 | $56K | -2.6% | -10.9% | -8.5% |
| DHIL | BUY | 2021-06-30 | 2021-07-01 | $142.21 | $3K | -1.9% | +4.2% | +7.7% |
| DHIL | BUY | 2021-03-31 | 2021-04-01 | $132.61 | $7K | +0.5% | +9.7% | +4.5% |
| DHIL | BUY | 2020-03-13 | 2020-03-13 | $99.00 | $40K | -11.0% | +0.2% | +15.1% |
| DHIL | BUY | 2020-03-12 | 2020-03-12 | $102.50 | $41K | -12.7% | -2.2% | +20.2% |
| DHIL | BUY | 2019-12-03 | 2019-12-04 | $134.00 | $80K | +2.4% | +3.9% | -7.9% |
| DHIL | BUY | 2019-11-01 | 2019-11-05 | $142.25 | $71K | +1.6% | -6.2% | -3.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.