William J. Teuber Jr. is Chairman at EMC CORP (EMC). They have made 22 open-market trades across 4 companies since 2007, most recently 2026-06-17.
CIK 0001189196
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
6 open-market purchases totalling $1.8M since 2012, against 16 sales. Across 6 scored buys the stock is up 20.9% at ninety days, and 14.4 points ahead of the S&P over the same stretch.
6 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| BPOP | 63,356 | $10.1M |
| INOV | 153,412 | $5.6M |
| IONQ | 13,939 | $436K |
| EMC | 639,406 | — |
| Total | $16.1M |
Shares reported on the most recent Form 4, priced at the 2026-06-18 close. 1 holding could not be priced and is excluded from the total.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 33% | 50% | 67% |
| Avg Move | -0.8% | -2.8% | +20.9% |
| Alpha | -1.1% | -4.0% | +14.4% |
| Scored | 6 | 6 | 6 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| IONQ | BUY | 2026-02-27 | 2026-02-27 | $38.39 | $115K | -5.9% | -27.0% | +92.5% |
| IONQ | BUY | 2025-11-11 | 2025-11-13 | $54.82 | $110K | +9.5% | +7.2% | -21.8% |
| INOV | BUY | 2020-10-30 | 2020-11-02 | $19.48 | $195K | -2.3% | -3.9% | +32.2% |
| INOV | BUY | 2016-12-16 | 2016-12-20 | $9.25 | $241K | +10.1% | +20.2% | +30.3% |
| INOV | BUY | 2016-09-08 | 2016-09-09 | $16.46 | $988K | -3.9% | -14.0% | -8.8% |
| EMC | SELL | 2014-10-24 | 2014-10-28 | $27.83 | $1.4M | N/A | N/A | N/A |
| EMC | SELL | 2014-10-23 | 2014-10-27 | $27.56 | $2.8M | N/A | N/A | N/A |
| EMC | SELL | 2013-07-25 | 2013-07-29 | $26.49 | $2.6M | N/A | N/A | N/A |
| EMC | SELL | 2012-11-06 | 2012-11-08 | $25.00 | $323K | N/A | N/A | N/A |
| EMC | SELL | 2012-11-05 | 2012-11-07 | $25.03 | $3.2M | N/A | N/A | N/A |
| EMC | SELL | 2012-07-25 | 2012-07-27 | $25.33 | $5.1M | N/A | N/A | N/A |
| BPOP | BUY | 2012-04-30 | 2012-05-01 | $1.75 | $175K | -12.0% | +0.8% | +0.8% |
| EMC | SELL | 2012-02-03 | 2012-02-07 | $26.46 | $370K | N/A | N/A | N/A |
| EMC | SELL | 2012-02-02 | 2012-02-06 | $25.80 | $1.5M | N/A | N/A | N/A |
| EMC | SELL | 2011-10-21 | 2011-10-21 | $24.20 | $3.0M | N/A | N/A | N/A |
| EMC | SELL | 2011-07-22 | 2011-07-26 | $27.78 | $5.6M | N/A | N/A | N/A |
| EMC | SELL | 2011-01-27 | 2011-01-28 | $24.92 | $5.5M | N/A | N/A | N/A |
| EMC | SELL | 2010-11-05 | 2010-11-05 | $21.60 | $6.1M | N/A | N/A | N/A |
| EMC | SELL | 2010-07-27 | 2010-07-28 | $20.27 | $10.1M | N/A | N/A | N/A |
| EMC | SELL | 2009-11-23 | 2009-11-25 | $17.17 | $3.5M | N/A | N/A | N/A |
| EMC | SELL | 2009-01-29 | 2009-01-30 | $11.33 | $2.3M | N/A | N/A | N/A |
| EMC | SELL · 10b5-1 | 2007-10-25 | 2007-10-26 | $23.84 | $4.8M | N/A | N/A | N/A |
| EMC | SELL · 10b5-1 | 2007-08-29 | 2007-08-30 | $19.33 | $3.9M | N/A | N/A | N/A |
| EMC | SELL | 2007-04-27 | 2007-04-27 | $15.58 | $2.3M | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.