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INSIDER PROFILE · UK
Petrina Porter (née Austin)
PDMR
Profile key: uk|petrina porter (née austin)
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 3
- Purchases · 24M
- 5
- Average purchase
- £26,240
- Gross purchase value
- £131,200
- Last purchase
- 2026-08-26
- Completed 20D events
- 5.0
- Outcome status
- PASS
Latest company: Tritax Big Box REIT plc
Companies: Tritax Big Box REIT plc
Post-purchase outcomes
Benchmark-relative outcomes are available against FTSE 100.
- Excess return = stock return − FTSE 100 return over the same period.
- Hit rate = positive excess-return events ÷ completed events.
- Price coverage = valid point-in-time prices ÷ events mature enough for that period.
- Returns start on the first shared trading session on or after publication.
| Period | Completed events | Price coverage | Hit rate | Median excess return | Average excess return | Worst excess return |
|---|---|---|---|---|---|---|
| 5D | 5Developing | 100.0% (5/5) | 0.0% (0/5) | -3.5% | -3.2% | -5.0% |
| 20D | 5Developing | 100.0% (5/5) | 0.0% (0/5) | -6.4% | -6.1% | -11.3% |
| 60D | 3Small sample | 100.0% (3/3) | 33.3% (1/3) | -0.6% | -2.9% | -9.0% |
| 120D | 3Small sample | 100.0% (3/3) | 33.3% (1/3) | -8.3% | -3.9% | -8.4% |
Research patterns
- First purchase in 12M
- 0/4
- Large purchase ≥ €100k
- 0/5
- Cluster buying · 15D
- 5/5
- Buying the dip · ≥20% below prior 52W high
- 0/5
- Routine / opportunistic
- Not classifiable
Counts are profile-wide, point-in-time research labels. They never affect the insider score or ranking.
Every completed outcome is shown; n<5 is descriptive small-sample evidence and is not scored. Disclosure-level observations published on the same date may share a return path and may not be statistically independent. These results never affect the insider score or ranking.