RUBICON TECHNOLOGY INC

Ticker: RBCN CUSIP: 78112T206 Class: Equities

ARIEL INVESTMENTS, LLC's Holding History (CIK: 0000936753)

Note: Option positions (PUT/CALL) are excluded.

Q2 2021
Shares 21,551 Value ($000) $205 Avg Close $10.19 Range $9.42 - $11.92
Q1 2021
Shares 53,798 Value ($000) $555 Avg Close $10.29 Range $9.18 - $11.84
Q4 2020
Shares 57,886 Value ($000) $524 Avg Close $8.78 Range $8.39 - $10.00
Q3 2020
Shares 57,087 Value ($000) $485 Avg Close $8.29 Range $7.75 - $8.85
Q2 2020
Shares 57,087 Value ($000) $464 Avg Close $7.80 Range $7.25 - $9.00
Q1 2020
Shares 66,568 Value ($000) $514 Avg Close $8.57 Range $7.15 - $9.16
Q4 2019
Shares 78,078 Value ($000) $650 Avg Close $8.48 Range $7.93 - $10.09
Q3 2019
Shares 108,015 Value ($000) $1,034 Avg Close $8.95 Range $8.16 - $9.87
Q2 2019
Shares 145,316 Value ($000) $1,206 Avg Close $8.02 Range $7.50 - $8.62
Q1 2019
Shares 145,316 Value ($000) $1,173 Avg Close $8.16 Range $7.62 - $8.48
Q4 2018
Shares 144,635 Value ($000) $1,143 Avg Close $8.11 Range $7.24 - $9.12
Q3 2018
Shares 224,775 Value ($000) $2,018 Avg Close $8.46 Range $7.79 - $9.46
Q2 2018
Shares 215,083 Value ($000) $1,697 Avg Close $7.38 Range $6.76 - $8.06
Q1 2018
Shares 156,147 Value ($000) $1,085 Avg Close $7.49 Range $6.95 - $8.39
Q4 2017
Shares 182,827 Value ($000) $1,459 Avg Close $8.17 Range $7.51 - $9.05
Q3 2017
Shares 177,992 Value ($000) $1,470 Avg Close $8.22 Range $6.71 - $9.41
Q2 2017
Shares 180,297 Value ($000) $1,670 Avg Close $8.54 Range $6.40 - $10.45