Rosenthal Brent D Insider Trading Activity
Rosenthal Brent D has been net-buying over the last 12 months with 8 purchases and 0 sales across 2 different companies.
HKHC is the most-traded position with 4 trades. The largest single transaction was a purchase of PBI for $41K on Mar 13, 2026.
Performance Scorecard
Forward stock performance after each transaction by Rosenthal Brent D. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | -2.9% | — | 43% | 7 |
| 90 days | +6.7% | — | 67% | 6 |
| 120 days | +11.4% | — | 67% | 6 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
May 20, 2026 | HKHC | Buy | 700 | $27.85 | $19K | +40.0% | Director | |
Mar 18, 2026 | HKHC | Buy | 750 | $33.05 | $25K | +75.0% | Director | |
Mar 13, 2026 | PBI | Buy | 4,000 | $10.22 | $41K | +80.0% | Director | |
Nov 25, 2025 | PBI | Buy | 500 | $10.01 | $5K | +16.7% | Director | |
Nov 25, 2025 | HKHC | Buy | 300 | $27.28 | $8K | +42.9% | Director | |
Nov 25, 2025 | PBI | Buy | 1,500 | $10.00 | $15K | +42.9% | Director | |
Sep 3, 2025 | PBI | Buy | 3,000 | $11.97 | $36K | — | Director | |
Sep 2, 2025 | HKHC | Buy | 300 | $38.00 | $11K | +75.0% | Director |
Top Companies Traded
Other insiders at Horizon Kinetics Holding Corp
2 other tracked filers at HKHC.