INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

GENERAL AMERICAN INVESTORS CO INC's Holding History (CIK: 0000040417)

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

Q4 2020
Shares 215,242 Value ($000) $13,061 Avg Close $59.88 Range $54.37 - $63.74
Q3 2020
Shares 215,242 Value ($000) $12,282 Avg Close $60.07 Range $54.62 - $67.06
Q2 2020
Shares 203,235 Value ($000) $11,509 Avg Close $53.16 Range $41.61 - $62.66
Q1 2020
Shares 152,337 Value ($000) $6,799 Avg Close $52.66 Range $31.04 - $64.22
Q4 2019
Shares 152,337 Value ($000) $8,301 Avg Close $55.25 Range $49.84 - $60.33
Q3 2019
Shares 179,137 Value ($000) $9,399 Avg Close $56.51 Range $47.02 - $66.95
Q2 2019
Shares 179,137 Value ($000) $11,536 Avg Close $66.69 Range $62.43 - $72.66
Q1 2019
Shares 143,966 Value ($000) $9,499 Avg Close $69.51 Range $64.12 - $74.03
Q4 2018
Shares 133,966 Value ($000) $8,899 Avg Close $72.85 Range $62.34 - $80.75
Q3 2018
Shares 133,966 Value ($000) $10,717 Avg Close $81.96 Range $78.65 - $85.85
Q2 2018
Shares 133,966 Value ($000) $10,838 Avg Close $79.55 Range $71.75 - $85.50
Q1 2018
Shares 133,966 Value ($000) $9,860 Avg Close $76.57 Range $69.33 - $81.70
Q4 2017
Shares 81,523 Value ($000) $6,208 Avg Close $74.74 Range $70.60 - $78.10