← dso_drift_severe (all companies) · PESI (all signals) · all methodology
dso_drift_severe on PERMA FIX ENVIRONMENTAL SERVICES INC (PESI)
SIC 4955 — Hazardous Waste Management · CIK 891532 · default direction: short
Definition
Fires on Days Sales Outstanding rising >25% YoY while revenue grows <10%. Channel-stuffing / receivables-quality precursor.
Every time the signal fired on PESI
| FY | Filing date | Event date | 1d | 5d | 20d | 60d | 252d |
|---|---|---|---|---|---|---|---|
| FY2024 | 2025-03-13 | 2025-03-13 | -0.27% | +3.15% | +0.41% | +41.45% | +78.93% |
| FY2021 | 2022-04-06 | 2022-04-06 | -1.72% | -5.86% | +3.28% | -12.07% | +101.38% |
| FY2014 | 2015-03-31 | 2015-03-31 | -0.77% | -9.54% | -10.82% | +0.52% | -4.64% |
Forward returns are stock returns from event date (next trading day after filing). Sign is raw stock direction; the trade direction is in the calibration table below.
Universe-wide calibration (this signal across all companies)
| Horizon | n events | Gross stock ret | Hit rate | Trade dir | Net PnL | Cost (bps) | r/σ net |
|---|---|---|---|---|---|---|---|
| 1d | 2,382 | +0.25% | +44.16% | short | -0.49% | 35 | -0.04 |
| 5d | 2,381 | -0.30% | +44.18% | short | +0.11% | 36 | +0.01 |
| 20d | 2,351 | +2.47% | +43.26% | short | -2.54% | 40 | -0.02 |
| 60d | 2,258 | +16.34% | +45.44% | short | -11.34% | 51 | -0.06 |
| 252d | 2,213 | +32.55% | +49.30% | short | -24.65% | 102 | -0.10 |
Net PnL is direction × stock return − round-trip execution cost (5 bps half-spread + ADV-tiered borrow). See dso_drift_severe methodology for the full audit.