INTERDIGITAL INC · CUSIP 45867G101 · CIK 1301050
As of 2026-06-30, Shannon River Fund Management LLC reported 184.39K IDCC (shares), valued at $52.21M, or 4.66% of its reported non-derivative portfolio. Filed 2026-08-13.
Verify history & sources →Shares increased 240.80%; reported value increased 219.51%, and weight changed +1.54 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds.
Left: % · Right: Shares · Independently scaled axes
Exact data and methodology
Axes scale independently; a crossing does not mean equal values. Weight uses each quarter's total reported non-derivative value. Same CUSIP; missing quarters are gaps, not zero. Revised history may include later disclosures.
| Quarter | Weight | Quantity | Source |
|---|---|---|---|
| Q2 2026 | 4.66% | 184,388 | SEC filing ↗Filed Aug 13, 2026 |
| Q1 2026 | 3.12% | 54,104 | SEC filing ↗Filed May 14, 2026 |
| Q4 2025 | 2.67% | 53,490 | SEC filing ↗Filed Feb 17, 2026 |
| Q3 2025 | 9.93% | 178,720 | SEC filing ↗Filed Nov 13, 2025 |
| Q2 2025 | 8.17% | 236,571 | SEC filing ↗Filed Aug 13, 2025 |
| Q1 2025 | 12.14% | 225,002 | SEC filing ↗Filed May 14, 2025 |
| Q4 2024 | 13.07% | 381,645 | SEC filing ↗Filed Feb 13, 2025 |
| Q3 2024 | 10.11% | 472,152 | SEC filing ↗Filed Nov 13, 2024 |
| Q2 2024 | 8.89% | 443,459 | SEC filing ↗Filed Aug 13, 2024 |
| Q1 2024 | 8.74% | 368,809 | SEC filing ↗Filed May 14, 2024 |
| Q4 2023 | 14.20% | 472,807 | SEC filing ↗Filed Feb 13, 2024 |
| Q3 2023 | 15.15% | 642,265 | SEC filing ↗Filed Nov 13, 2023 |
History & evidence by quarter
| Quarter | Weight | Quantity | Value | Change explained | Source |
|---|---|---|---|---|---|
| Q3 2023 | 15.15% | 642,265 | $51.54M | The prior quarter is outside the free window. Sign in for the comparison. | SEC filing ↗ Filed Nov 13, 2023 |
| Q4 2023 | 14.20% | 472,807 | $51.32M | Shares decreased 26.38%; reported value decreased 0.42%, and weight changed -0.95 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 13, 2024 |
| Q1 2024 | 8.74% | 368,809 | $39.26M | Shares decreased 22.00%; reported value decreased 23.49%, and weight changed -5.46 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 14, 2024 |
| Q2 2024 | 8.89% | 443,459 | $51.69M | Shares increased 20.24%; reported value increased 31.65%, and weight changed +0.15 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 13, 2024 |
| Q3 2024 | 10.11% | 472,152 | $66.87M | Shares increased 6.47%; reported value increased 29.37%, and weight changed +1.22 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 13, 2024 |
| Q4 2024 | 13.07% | 381,645 | $73.93M | Shares decreased 19.17%; reported value increased 10.56%, and weight changed +2.96 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 13, 2025 |
| Q1 2025 | 12.14% | 225,002 | $46.52M | Shares decreased 41.04%; reported value decreased 37.08%, and weight changed -0.93 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 14, 2025 |
| Q2 2025 | 8.17% | 236,571 | $53.05M | Shares increased 5.14%; reported value increased 14.03%, and weight changed -3.97 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 13, 2025 |
| Q3 2025 | 9.93% | 178,720 | $61.70M | Shares decreased 24.45%; reported value increased 16.31%, and weight changed +1.76 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Nov 13, 2025 |
| Q4 2025 | 2.67% | 53,490 | $17.03M | Shares decreased 70.07%; reported value decreased 72.40%, and weight changed -7.26 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Feb 17, 2026 |
| Q1 2026 | 3.12% | 54,104 | $16.34M | Shares increased 1.15%; reported value decreased 4.06%, and weight changed +0.45 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed May 14, 2026 |
| Q2 2026 | 4.66% | 184,388 | $52.21M | Shares increased 240.80%; reported value increased 219.51%, and weight changed +1.54 pp. Weight depends on both the security valuation and total portfolio value, not trade proceeds. | SEC filing ↗ Filed Aug 13, 2026 |
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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.