InterDigital, Inc.
US ˙ NasdaqGS ˙ US45867G1013

SecurityIDCC / InterDigital, Inc.
InstitutionAssetmark, Inc
Latest Disclosed Ownership24,006 shares
Latest Disclosed Value $ 7,249,936
Assetmark, Inc reports 9.93% increase in ownership of IDCC / InterDigital, Inc.

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 24,006 shares of InterDigital, Inc. (US:IDCC) valued at $7,249,812 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 21,838 shares of InterDigital, Inc.. This represents a change in shares of 9.93% during the quarter. The current value of the position is $6,160,900 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-06 2026-03-31 13F INTERDIGITAL COM 45867G101 24,006 2,168 9.93 7,250 4.27 0.0148
2026-01-23 2025-12-31 13F INTERDIGITAL COM 45867G101 21,838 1,455 7.14 6,953 -1.19 0.0142
2025-11-06 2025-09-30 13F INTERDIGITAL COM 45867G101 20,383 242 1.20 7,037 55.80 0.0151
2025-08-04 2025-06-30 13F INTERDIGITAL COM 45867G101 20,141 -889 -4.23 4,516 3.86 0.0107
2025-05-06 2025-03-31 13F INTERDIGITAL COM 45867G101 21,030 2,906 16.03 4,348 23.84 0.0119
2025-02-06 2024-12-31 13F INTERDIGITAL COM 45867G101 18,124 -853 -4.49 3,511 30.67 0.0095
2024-11-01 2024-09-30 13F INTERDIGITAL COM 45867G101 18,977 1,060 5.92 2,688 28.69 0.0077
2024-08-13 2024-06-30 13F INTERDIGITAL COM 45867G101 17,917 893 5.25 2,088 15.23 0.0065
2024-05-07 2024-03-31 13F INTERDIGITAL COM 45867G101 17,024 544 3.30 1,812 1.34 0.0059
2024-02-09 2023-12-31 13F INTERDIGITAL COM 45867G101 16,480 16,479 1,647,900.00 1,789 0.0065
2023-10-27 2023-09-30 13F INTERDIGITAL COM 45867G101 1 1 0 0.0000
2018-02-13 2017-12-31 13F INTERDIGITAL INC COM COM 45867G101 0 -24 -100.00 0 -100.00
2017-11-08 2017-09-30 13F INTERDIGITAL INC COM COM 45867G101 24 -7 -22.58 2 0.00 0.0000
2017-08-14 2017-06-30 13F INTERDIGITAL INC COM COM 45867G101 31 31 2 0.0000
2017-09-15 2017-03-31 13F/A-1 INTERDIGITAL INC COM COM 45867G101 0 -75 -100.00 0 -100.00
2017-09-15 2016-12-31 13F/A-1 INTERDIGITAL INC COM COM 45867G101 75 -39 -34.21 7 -22.22 0.0001
2017-02-14 2016-12-31 13F INTERDIGITAL INC COM COM 45867G101 75 -39 7
2017-09-14 2016-09-30 13F/A-1 INTERDIGITAL INC COM COM 45867G101 114 -195 -63.11 9 -47.06 0.0001
2016-11-04 2016-09-30 13F INTERDIGITAL INC COM COM 45867G101 114 -195 9
2017-09-14 2016-06-30 13F/A-1 INTERDIGITAL INC COM COM 45867G101 309 213 221.88 17 240.00 0.0003
2016-08-08 2016-06-30 13F INTERDIGITAL INC COM COM 45867G101 309 213 17
2017-09-14 2016-03-31 13F/A-1 INTERDIGITAL INC COM COM 45867G101 96 89 1,271.43 5 0.0001
2016-05-13 2016-03-31 13F INTERDIGITAL INC COM COM 45867G101 96 89 5
2017-09-14 2015-12-31 13F/A-1 INTERDIGITAL INC COM COM 45867G101 7 7 0 0.0000
2016-02-12 2015-12-31 13F INTERDIGITAL INC COM COM 45867G101 7 7 0
2015-11-10 2015-09-30 13F INTERDIGITAL INC COM COM 45867G101 0 0 0 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.