INTERDIGITAL INC

Ticker: IDCC CUSIP: 45867G101 Class: EQTY

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q2 2025

Shares 279 Value ($000) $63 Avg Close $211.87 Range $180.60 - $237.50

Q4 2024

Shares 1,738 Value ($000) $337 Avg Close $174.85 Range $140.47 - $203.90

Q3 2024

Shares 2,806 Value ($000) $397 Avg Close $131.08 Range $115.10 - $143.96

Q2 2024

Shares 4,406 Value ($000) $514 Avg Close $106.87 Range $95.33 - $119.10

Q1 2024

Shares 2,372 Value ($000) $253 Avg Close $105.70 Range $100.55 - $119.86

Q3 2023

Shares 151 Value ($000) $12 Avg Close $86.92 Range $79.20 - $98.69

Q2 2023

Shares 2,377 Value ($000) $229 Avg Close $80.98 Range $66.82 - $97.62

Q4 2022

Shares 720 Value ($000) $36 Avg Close $48.77 Range $43.87 - $51.48

Q1 2022

Shares 161 Value ($000) $10 Avg Close $66.45 Range $61.36 - $73.97

Q2 2021

Shares 2,329 Value ($000) $170 Avg Close $73.91 Range $63.74 - $85.75

Q1 2020

Shares 1,358 Value ($000) $61 Avg Close $52.66 Range $31.04 - $64.22

Q4 2019

Shares 13,835 Value ($000) $754 Avg Close $55.25 Range $49.84 - $60.33

Q3 2019

Shares 14,654 Value ($000) $769 Avg Close $56.51 Range $47.02 - $66.95

Q4 2018

Shares 179 Value ($000) $12 Avg Close $72.85 Range $62.34 - $80.75

Q4 2017

Shares 2,800 Value ($000) $213 Avg Close $74.74 Range $70.60 - $78.10

Q4 2016

Shares 20,325 Value ($000) $1,857 Avg Close $80.20 Range $68.10 - $98.00

Q3 2016

Shares 28,683 Value ($000) $2,272 Avg Close $66.77 Range $52.33 - $79.92

Q4 2015

Shares 10,977 Value ($000) $538 Avg Close $50.76 Range $46.78 - $54.95

Q3 2014

Shares 2,904 Value ($000) $116 Avg Close $44.00 Range $39.40 - $48.93

Q2 2014

Shares 9,522 Value ($000) $455 Avg Close $38.65 Range $31.45 - $49.10

Q1 2014

Shares 11,813 Value ($000) $391 Avg Close $29.77 Range $26.25 - $33.60

Q4 2013

Shares 26,961 Value ($000) $795 Avg Close $33.88 Range $28.53 - $39.87

Q3 2013

Shares 24,592 Value ($000) $918 Avg Close $37.73 Range $35.02 - $41.24

Q2 2013

Shares 21,236 Value ($000) $948 Avg Close $44.80 Range $38.60 - $48.60

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	279	$63	$211.87	$180.60 - $237.50
Q4 2024	1,738	$337	$174.85	$140.47 - $203.90
Q3 2024	2,806	$397	$131.08	$115.10 - $143.96
Q2 2024	4,406	$514	$106.87	$95.33 - $119.10
Q1 2024	2,372	$253	$105.70	$100.55 - $119.86
Q3 2023	151	$12	$86.92	$79.20 - $98.69
Q2 2023	2,377	$229	$80.98	$66.82 - $97.62
Q4 2022	720	$36	$48.77	$43.87 - $51.48
Q1 2022	161	$10	$66.45	$61.36 - $73.97
Q2 2021	2,329	$170	$73.91	$63.74 - $85.75
Q1 2020	1,358	$61	$52.66	$31.04 - $64.22
Q4 2019	13,835	$754	$55.25	$49.84 - $60.33
Q3 2019	14,654	$769	$56.51	$47.02 - $66.95
Q4 2018	179	$12	$72.85	$62.34 - $80.75
Q4 2017	2,800	$213	$74.74	$70.60 - $78.10
Q4 2016	20,325	$1,857	$80.20	$68.10 - $98.00
Q3 2016	28,683	$2,272	$66.77	$52.33 - $79.92
Q4 2015	10,977	$538	$50.76	$46.78 - $54.95
Q3 2014	2,904	$116	$44.00	$39.40 - $48.93
Q2 2014	9,522	$455	$38.65	$31.45 - $49.10
Q1 2014	11,813	$391	$29.77	$26.25 - $33.60
Q4 2013	26,961	$795	$33.88	$28.53 - $39.87
Q3 2013	24,592	$918	$37.73	$35.02 - $41.24
Q2 2013	21,236	$948	$44.80	$38.60 - $48.60