Wei Ding is President at SMITH A O CORP (AOS). They have made 12 open-market trades across 2 companies since 2013, most recently 2022-03-09.
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.
0 open-market purchases, against 12 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| INSG | SELL | 2021-05-19 | 2021-06-10 | $8.50 | $16K | -0.1% | -10.0% | -18.6% |
| AOS | SELL | 2018-02-20 | 2018-02-20 | $65.29 | $1.5M | -5.3% | -1.3% | -1.3% |
| AOS | SELL | 2017-02-27 | 2017-02-28 | $51.10 | $2.2M | -1.7% | +0.4% | +6.7% |
| AOS | SELL | 2016-12-12 | 2016-02-16 | $— | — | +7.0% | +11.6% | +17.4% |
| AOS | SELL | 2016-05-02 | 2016-05-03 | $78.16 | $1.3M | +1.6% | +7.3% | +20.5% |
| AOS | SELL | 2015-12-11 | 2015-12-11 | $77.58 | $107K | -16.2% | -13.2% | -2.7% |
| AOS | SELL | 2015-03-05 | 2015-03-05 | $63.30 | $521K | -16.2% | -0.4% | -0.4% |
| AOS | SELL | 2015-02-18 | 2015-02-18 | $62.17 | $38K | -16.2% | -0.4% | -0.4% |
| AOS | SELL | 2014-03-03 | 2014-03-03 | $49.07 | $124K | -16.2% | -0.4% | -0.4% |
| AOS | SELL | 2014-02-10 | 2014-02-11 | $46.72 | $20K | -16.2% | -0.4% | -0.4% |
| AOS | SELL | 2013-10-24 | 2013-10-25 | $50.24 | $285K | -16.2% | -0.4% | -0.4% |
| AOS | SELL | 2013-02-11 | 2013-03-25 | $69.60 | $18K | -16.2% | -0.4% | -0.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.