Ticker · CUSIP 755408200
Holders (tracked)
1
Combined shares
34,000
Combined value
$394.4K
Last close
$9.99
Quarter
2025Q4
Price · 1Y$9.99-0.01 (-0.10%)H $14.10 · L $8.00 · Avg Vol 12K
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
Price is -13.9% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
No SEC events recorded for this ticker yet.
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of RDIB…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Mario Gabelli (GAMCO) | 2020Q2 | $12.29 | -18.7% | $340K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
No position changes reported on this name for the latest quarter.
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 1 | $209K |
| 2022Q2 | 1 | $231K |
| 2022Q3 | 1 | $206K |
| 2022Q4 | 1 | $220K |
| 2023Q1 | 1 | $303K |
| 2023Q2 | 1 | $323K |
| 2023Q3 | 1 | $242K |
| 2023Q4 | 1 | $204K |
| 2024Q1 | 1 | $226K |
| 2024Q2 | 1 | $214K |
| 2024Q3 | 1 | $152K |
| 2024Q4 | 1 | $255K |
| 2025Q1 | 1 | $234K |
| 2025Q2 | 1 | $329K |
| 2025Q3 | 1 | $380K |
| 2025Q4 | 1 | $394K |
Who owns RDIB
1 super-investors · 2025Q4
Tracked stake
34.0K
shares
Combined value
$394K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Mario Gabelli GAMCO | 34.0K | $394K |
Recent moves
13 transactions
- +700 · 2025Q2
- +3,300 · 2025Q1
- +11,500 · 2024Q4
- +2,500 · 2024Q3
- +1,000 · 2024Q2
- +500 · 2024Q1
- +500 · 2023Q4
- +2,900 · 2023Q1
- +100 · 2022Q4
- −1,015 · 2021Q4
- +1,039 · 2021Q1
- +176 · 2020Q3
- +10,800 · 2020Q2
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