← margin_compression_severe (all companies) · PESI (all signals) · all methodology
margin_compression_severe on PERMA FIX ENVIRONMENTAL SERVICES INC (PESI)
SIC 4955 — Hazardous Waste Management · CIK 891532 · default direction: short
Definition
Fires on >500 bps year-over-year decline in operating margin. Captures the 'good business getting worse' pattern.
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% |
| FY2020 | 2021-03-29 | 2021-03-29 | -1.35% | -0.54% | +0.00% | -7.13% | -23.69% |
| FY2016 | 2017-03-24 | 2017-03-24 | -1.59% | +0.00% | -1.59% | +14.29% | +30.16% |
| FY2012 | 2013-12-12 | 2013-12-12 | -0.32% | +1.27% | +15.24% | +13.97% | +37.46% |
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 | 2,429 | +2.00% | +36.27% | short | -2.03% | 46 | -0.02 |
| 5d | 2,429 | +3.35% | +38.74% | short | -2.80% | 47 | -0.02 |
| 20d | 2,364 | +6.26% | +38.32% | short | -4.81% | 52 | -0.03 |
| 60d | 2,266 | +78.74% | +40.47% | short | -75.14% | 65 | -0.03 |
| 252d | 2,195 | +41.39% | +39.77% | short | -31.94% | 126 | -0.09 |
Net PnL is direction × stock return − round-trip execution cost (5 bps half-spread + ADV-tiered borrow). See margin_compression_severe methodology for the full audit.