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capex_spike on SMITH MIDLAND CORP (SMID)
SIC 3272 — Concrete Products, Except Block & Brick · CIK 924719 · default direction: short
Definition
Fires on >50% YoY capex increase. Captures aggressive reinvestment phases — often precedes value destruction in mature industries.
Every time the signal fired on SMID
| FY | Filing date | Event date | 1d | 5d | 20d | 60d | 252d |
|---|---|---|---|---|---|---|---|
| FY2023 | 2024-05-23 | 2024-05-23 | -6.09% | +7.28% | -15.77% | -0.96% | -7.92% |
| FY2021 | 2022-03-31 | 2022-03-31 | +2.25% | +4.17% | -4.96% | -20.73% | +6.76% |
| FY2018 | 2019-03-26 | 2019-03-26 | -1.33% | +2.00% | +14.00% | +17.87% | -32.67% |
| FY2016 | 2017-03-30 | 2017-03-30 | +11.11% | +9.40% | +22.74% | +29.91% | +35.91% |
| FY2015 | 2016-03-28 | 2016-03-28 | -4.41% | -7.35% | -13.60% | -7.35% | +115.49% |
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 | 2,295 | +0.01% | +43.27% | short | -0.06% | 32 | -0.01 |
| 5d | 2,292 | -0.85% | +41.88% | short | +0.74% | 33 | +0.06 |
| 20d | 2,258 | -1.91% | +41.67% | short | +2.05% | 36 | +0.10 |
| 60d | 2,127 | +0.65% | +44.01% | short | -0.78% | 47 | -0.02 |
| 252d | 2,092 | +14.03% | +44.93% | short | -14.91% | 97 | -0.09 |
Net PnL is direction × stock return − round-trip execution cost (5 bps half-spread + ADV-tiered borrow). See capex_spike methodology for the full audit.