John Rogers - Ariel Investments,
Holding/activity history for Rubicon Technology Inc (RBCN)
| Period | Shares | % of Portfolio | Activity | % Change to Portfolio | Reported Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2021 Q3 | 0 | 0.00 | Sell 100.00% | <0.01 | SEC | ||
| 2021 Q2 | 21,551 | <0.01 | Reduce 59.94% | <0.01 | $9.51 | $205,000 | SEC |
| 2021 Q1 | 53,798 | 0.01 | Reduce 7.06% | <0.01 | $10.32 | $555,000 | SEC |
| 2020 Q4 | 57,886 | 0.01 | Add 1.40% | <0.01 | $9.05 | $524,000 | SEC |
| 2020 Q3 | 57,087 | 0.01 | $8.50 | $485,000 | SEC | ||
| 2020 Q2 | 57,087 | 0.01 | Reduce 14.24% | <0.01 | $8.13 | $464,000 | SEC |
| 2020 Q1 | 66,568 | 0.01 | Reduce 14.74% | <0.01 | $7.72 | $514,000 | SEC |
| 2019 Q4 | 78,078 | 0.01 | Reduce 27.72% | <0.01 | $8.33 | $650,000 | SEC |
| 2019 Q3 | 108,015 | 0.01 | Reduce 25.67% | <0.01 | $9.57 | $1,034,000 | SEC |
| 2019 Q2 | 145,316 | 0.02 | $8.30 | $1,206,000 | SEC | ||
| 2019 Q1 | 145,316 | 0.01 | Add 0.47% | $8.07 | $1,173,000 | SEC | |
| 2018 Q4 | 144,635 | 0.02 | Reduce 35.65% | <0.01 | $7.90 | $1,143,000 | SEC |
| 2018 Q3 | 224,775 | 0.02 | Add 4.51% | <0.01 | $8.98 | $2,018,000 | SEC |
| 2018 Q2 | 215,083 | 0.02 | Add 37.74% | <0.01 | $7.89 | $1,697,000 | SEC |
| 2018 Q1 | 156,147 | 0.01 | Reduce 14.59% | <0.01 | $6.95 | $1,085,000 | SEC |
| 2017 Q4 | 182,827 | 0.02 | Add 2.72% | <0.01 | $7.98 | $1,459,000 | SEC |
| 2017 Q3 | 177,992 | 0.02 | Reduce 1.28% | <0.01 | $8.26 | $1,470,000 | SEC |
| 2017 Q2 | 180,297 | 0.02 | Buy | 0.02 | $9.26 | $1,670,000 | SEC |