Michael Andrew Kumin is Director & 10% Owner at Wayfair Inc. (W). They have made 16 open-market trades across 2 companies since 2013, most recently 2026-03-05.
CIK 0001368414
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.
5 open-market purchases totalling $31.8M since 2018, against 11 sales. Across 5 scored buys the stock is up 12.4% at ninety days, and 6.3 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 80% | 80% | 60% |
| Avg Move | +8.0% | +4.8% | +12.4% |
| Alpha | +6.9% | +3.6% | +6.3% |
| Scored | 5 | 5 | 5 |
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 100% | 22% | 56% |
| Avg Move | -3.7% | +4.3% | +25.6% |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| W | BUY | 2025-08-28 | 2025-09-04 | $74.97 | $12K | +4.0% | +0.3% | +13.5% |
| W | BUY | 2021-03-04 | 2021-03-05 | $283.57 | $26.5M | +7.9% | +8.6% | +9.3% |
| W | BUY | 2019-08-23 | 2019-08-27 | $109.75 | $3.2M | +14.4% | +8.1% | -21.3% |
| W | BUY | 2019-05-14 | 2019-05-15 | $141.04 | $423K | -0.1% | +9.2% | -13.7% |
| W | BUY | 2018-11-21 | 2018-11-26 | $89.25 | $1.7M | +13.9% | -2.3% | +74.3% |
| W | SELL | 2017-08-30 | 2017-08-30 | $68.47 | $990K | +17.6% | -3.8% | -0.0% |
| W | SELL | 2017-08-10 | 2017-08-11 | $70.00 | $286K | -3.7% | +10.1% | -17.2% |
| W | SELL | 2017-03-02 | 2017-03-02 | $37.78 | $7.0M | -2.5% | +9.0% | +65.8% |
| W | SELL | 2017-03-01 | 2017-03-02 | $38.07 | $50K | -2.5% | +9.0% | +65.8% |
| W | SELL | 2017-02-28 | 2017-03-02 | $38.12 | $19.1M | -2.5% | +9.0% | +65.8% |
| W | SELL | 2017-02-28 | 2017-03-02 | $38.32 | $12.0M | -2.5% | +9.0% | +65.8% |
| W | SELL | 2016-08-30 | 2016-08-31 | $38.43 | $7.7M | -2.6% | +2.1% | -9.9% |
| W | SELL | 2016-08-29 | 2016-08-31 | $38.10 | $11.4M | -2.6% | +2.1% | -9.9% |
| W | SELL | 2016-08-29 | 2016-08-31 | $38.23 | $19.1M | -2.6% | +2.1% | -9.9% |
| W | SELL | 2014-10-07 | 2014-10-09 | $27.26 | $27.1M | -9.0% | -2.4% | -2.4% |
| LOV | SELL | 2013-05-07 | 2013-05-09 | $5.88 | $9.0M | -7.0% | -1.3% | -1.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| Scored | 9 | 9 | 9 |