Charles Biederman is Director at ONE LIBERTY PROPERTIES INC (OLP). They have made 11 open-market trades across 1 company since 2011, most recently 2026-01-14.
CIK 0001187919
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.
7 open-market purchases totalling $217K since 2011, against 4 sales. Across 7 scored buys the stock is down 2.1% at ninety days, and 2.4 points behind the S&P over the same stretch.
7 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| OLP | 59,856 | $1.3M |
Shares reported on the most recent Form 4, priced at the 2026-01-16 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 0% | 0% |
| Avg Move | -4.8% | -2.1% | -2.1% |
| Alpha | +1.0% | -2.4% | -2.4% |
| Scored | 7 | 7 | 7 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| OLP | SELL | 2023-08-29 | 2023-08-31 | $19.72 | $39K | -2.2% | -8.3% | +1.8% |
| OLP | SELL | 2023-06-14 | 2024-01-17 | $20.91 | $101K | -1.1% | -3.1% | +0.5% |
| OLP | SELL | 2023-06-14 | 2023-08-31 | $20.93 | $103K | -2.2% | -8.3% | +1.8% |
| OLP | SELL | 2023-01-26 | 2023-01-30 | $23.25 | $47K | +0.3% | -4.2% | -4.9% |
| OLP | BUY | 2015-09-03 | 2015-09-08 | $21.94 | $22K | -4.8% | -2.1% | -2.1% |
| OLP | BUY | 2015-05-12 | 2015-05-14 | $22.14 | $44K | -4.8% | -2.1% | -2.1% |
| OLP | BUY | 2012-06-08 | 2012-06-12 | $18.31 | $18K | -4.8% | -2.1% | -2.1% |
| OLP | BUY | 2012-06-06 | 2012-06-07 | $18.38 | $18K | -4.8% | -2.1% | -2.1% |
| OLP | BUY | 2011-09-02 | 2011-09-07 | $14.84 | $59K | -4.8% | -2.1% | -2.1% |
| OLP | BUY | 2011-08-15 | 2011-08-18 | $15.27 | $15K | -4.8% | -2.1% | -2.1% |
| OLP | BUY | 2011-05-24 | 2011-05-26 | $15.87 | $40K | -4.8% | -2.1% | -2.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.