William C. Martin is CSO at IMMERSION CORP (IMMR). They have made 54 open-market trades across 18 companies since 2006, most recently 2026-10-07.
38 open-market purchases totalling $48.2M since 2009, against 16 sales. Across 23 scored buys the stock is up 11.7% at ninety days, and 9.5 points ahead of the S&P over the same stretch.
23 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 26% | 39% | 65% |
| Avg Move | -3.7% | -2.7% | +11.7% |
| Alpha | -1.2% | -1.7% | +9.5% |
| Scored | 23 | 23 | 23 |
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 83% | 33% | 33% |
| Avg Move | -8.9% | -1.6% | +0.3% |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IMMR | BUY | 2025-03-20 | 2025-03-24 | $7.55 | $410K | -10.1% | -11.5% | -3.2% |
| IMMR | BUY | 2024-08-27 | 2024-08-29 | $8.76 | $175K | -6.0% | -3.7% | -5.0% |
| BNED | BUY | 2024-07-08 | 2024-07-10 | $7.09 | $922K | +21.4% | +36.3% | +11.1% |
| UEIC | BUY | 2023-11-03 | 2023-11-07 | $8.10 | $996K | +2.3% | -8.7% | +2.8% |
| IMMR | BUY | 2022-09-13 | 2022-09-15 | $5.79 | $346K | -7.8% | -10.9% | +38.6% |
| IMMR | BUY | 2022-09-01 | 2022-09-06 | $5.68 | $445K | +0.0% | -8.3% | +30.3% |
| IMMR | BUY | 2022-08-25 | 2022-08-29 | $5.69 | $343K | +3.4% | -5.1% | +20.1% |
| IMMR | BUY | 2022-08-18 | 2022-08-22 | $5.32 | $1.2M | -0.5% | -3.8% | +23.5% |
| IMMR | BUY | 2022-05-27 | 2022-06-01 | $5.70 | $342K | -6.5% | -5.8% | +0.9% |
| IMMR | SELL | 2021-12-29 | 2022-01-03 | $5.75 | $6K | -10.7% | -13.6% | -7.1% |
| IMMR | SELL | 2021-11-11 | 2021-11-15 | $6.88 | $4.9M | -16.5% | -14.2% | -29.7% |
| IMMR | SELL | 2021-02-18 | 2021-02-19 | $12.84 | $7.4M | -17.9% | -12.1% | -34.5% |
| IMMR | SELL | 2020-11-27 | 2020-12-01 | $9.05 | $487K | +0.4% | +34.4% | +25.8% |
| IMMR | SELL | 2020-09-02 | 2020-09-04 | $9.97 | $9.4M | -18.6% | -24.1% | -4.6% |
| IMMR | BUY | 2019-08-06 | 2019-08-08 | $7.65 | $100K | +2.4% | +3.5% | +3.8% |
| IMMR | BUY | 2017-12-13 | 2017-12-15 | $6.55 | $4.0M | +5.0% | +13.4% | +93.1% |
| IMMR | BUY | 2017-12-08 | 2017-12-12 | $7.07 | $1.7M | -1.6% | +0.4% | +80.0% |
| RTK | SELL | 2017-12-05 | 2017-12-07 | $0.06 | $25K | N/A | N/A | N/A |
| IMMR | BUY | 2017-12-01 | 2017-12-06 | $7.31 | $6.0M | -3.2% | +5.0% | +67.0% |
| RTK | SELL | 2017-10-13 | 2017-10-17 | $0.20 | $165K | N/A | N/A | N/A |
| RTK | SELL | 2017-10-10 | 2017-10-12 | $0.26 | $403K | N/A | N/A | N/A |
| RTK | BUY | 2017-03-06 | 2017-03-08 | $0.77 | $731K | -30.3% | -39.9% | -42.6% |
| RTK | BUY | 2017-02-28 | 2017-03-02 | $0.76 | $224K | -7.2% | -41.9% | -48.6% |
| IMI | BUY | 2016-11-15 | 2016-11-17 | $0.84 | $1.6M | +2.0% | +15.0% | +8.0% |
| CAS | SELL | 2016-11-04 | 2016-11-07 | $0.10 | $926K | -21.7% | -29.3% | -29.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| UEIC |
| 1,412,709 |
| $7.3M |
| BNED | 187,391 | $2.4M |
| RTK | 2,323,059 | $465K |
| RATE | 2,500 | $43K |
| SGMEU.OB | 1,074,384 | — |
| SLRY | 64,119 | — |
| SMGI.OB | 2,741,717 | — |
| DSCI | 732,426 | — |
| CTMMB.PK | 24,324 | — |
| CTMM.PK | 492,027 | — |
| COMV | 2,338,501 | — |
| VTSS | 12,429,127 | — |
| MRVC | 8,257,773 | — |
| Total | $432.2M |
Shares reported on the most recent Form 4, priced at the 2026-10-08 close. 9 holdings could not be priced and are excluded from the total.
| Scored | 6 | 6 | 6 |