COMMUNICATIONS SYS INC

CUSIP: 203900105 Class: CMN

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q4 2021
Shares 382,938 Value ($000) $919 Avg Close — Range —
Q3 2021
Shares 404,309 Value ($000) $3,497 Avg Close — Range —
Q2 2021
Shares 425,634 Value ($000) $3,056 Avg Close — Range —
Q1 2021
Shares 422,609 Value ($000) $2,519 Avg Close — Range —
Q4 2020
Shares 418,718 Value ($000) $1,914 Avg Close — Range —
Q3 2020
Shares 430,393 Value ($000) $1,648 Avg Close — Range —
Q2 2020
Shares 438,311 Value ($000) $2,222 Avg Close — Range —
Q1 2020
Shares 449,693 Value ($000) $2,006 Avg Close — Range —
Q4 2019
Shares 442,811 Value ($000) $2,732 Avg Close — Range —
Q3 2019
Shares 445,509 Value ($000) $2,036 Avg Close — Range —
Q2 2019
Shares 446,710 Value ($000) $1,345 Avg Close — Range —
Q1 2019
Shares 446,710 Value ($000) $1,184 Avg Close — Range —
Q4 2018
Shares 452,978 Value ($000) $920 Avg Close — Range —
Q3 2018
Shares 454,778 Value ($000) $1,273 Avg Close — Range —
Q2 2018
Shares 473,911 Value ($000) $1,806 Avg Close — Range —
Q1 2018
Shares 498,489 Value ($000) $1,829 Avg Close — Range —
Q4 2017
Shares 525,915 Value ($000) $1,914 Avg Close — Range —
Q3 2017
Shares 533,715 Value ($000) $2,231 Avg Close — Range —
Q2 2017
Shares 579,079 Value ($000) $2,507 Avg Close — Range —
Q1 2017
Shares 585,314 Value ($000) $2,575 Avg Close — Range —
Q4 2016
Shares 593,108 Value ($000) $2,746 Avg Close — Range —
Q3 2016
Shares 607,640 Value ($000) $2,892 Avg Close — Range —
Q2 2016
Shares 611,480 Value ($000) $4,262 Avg Close — Range —
Q1 2016
Shares 623,253 Value ($000) $4,581 Avg Close — Range —
Q4 2015
Shares 627,614 Value ($000) $4,876 Avg Close — Range —
Q3 2015
Shares 631,571 Value ($000) $5,267 Avg Close — Range —
Q2 2015
Shares 632,544 Value ($000) $6,648 Avg Close — Range —
Q1 2015
Shares 632,478 Value ($000) $7,217 Avg Close — Range —
Q4 2014
Shares 633,278 Value ($000) $6,770 Avg Close — Range —
Q3 2014
Shares 633,489 Value ($000) $7,070 Avg Close — Range —
Q2 2014
Shares 635,835 Value ($000) $7,904 Avg Close — Range —
Q1 2014
Shares 629,383 Value ($000) $8,100 Avg Close — Range —
Q4 2013
Shares 628,434 Value ($000) $7,001 Avg Close — Range —
Q3 2013
Shares 625,059 Value ($000) $7,070 Avg Close — Range —
Q2 2013
Shares 626,143 Value ($000) $6,023 Avg Close — Range —