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Advanced Drainage Systems stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions−14.8% to $124.31
Advanced Drainage Systems (WMS) stock fell 15% over the last 252 sessions, to $124.31. On the way it reported 5 quarters, its insiders filed no open-market trades (10b5-1 plan sales aside), and the company filed 3 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Nov 5, 2026 | Earnings | Earnings: beat the EPS estimate by 5.2% | −16.1% (−11.6% vs SPY) | — | — |
| Oct 5, 2026 | 8-K | Material definitive agreement | +1.7% (+1.0% vs SPY) | −1.2% (−2.3% vs SPY) | +8.8% (+11.1% vs SPY) |
| Aug 6, 2026 | Earnings | Earnings: beat the EPS estimate by 17.4% | −0.8% (−0.6% vs SPY) | −6.3% (−6.6% vs SPY) | −10.2% (−10.7% vs SPY) |
| May 21, 2026 | Earnings | Earnings: beat the EPS estimate by 10.6% | −1.2% (−1.4% vs SPY) | +2.3% (+0.6% vs SPY) | +3.4% (+2.7% vs SPY) |
| Feb 27, 2026 | 8-K | Material definitive agreement | −1.7% (−1.7% vs SPY) | −15.8% (−13.8% vs SPY) | −26.4% (−18.4% vs SPY) |
| Feb 5, 2026 | Earnings | Earnings: beat the EPS estimate by 14.7% | +5.9% (+7.2% vs SPY) | +7.8% (+7.0% vs SPY) | −9.1% (−7.1% vs SPY) |
| Feb 2, 2026 | 8-K | Completed acquisition or disposition | +2.8% (+2.3% vs SPY) | +14.3% (+14.5% vs SPY) | +6.6% (+8.3% vs SPY) |
| Nov 6, 2025 | Earnings | Earnings: beat the EPS estimate by 20.5% | +8.4% (+9.5% vs SPY) | +11.3% (+10.4% vs SPY) | +10.1% (+8.9% vs SPY) |
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 2.01 Completed acquisition or disposition | 2,671 | +0.1% | 52% | +1.2% | ±1.6% |
| 1.01 Material definitive agreement | 23,525 | 0.0% | 51% | +1.0% | ±1.4% |
| 2.03 New debt or off-balance-sheet obligation | 13,268 | 0.0% | 50% | +1.2% | ±1.3% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Advanced Drainage Systems: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.