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INSIDER PROFILE · DE
Stefan Mittnik
Supervisory Board Member (Aufsichtsrat) · Initial notification
Profile key: de|stefan mittnik
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 10
- Purchases · 24M
- 23
- Average purchase
- —
- Gross purchase value
- —
- Last purchase
- 2026-09-30
- Completed 20D events
- 21.0
- Outcome status
- PASS
Latest company: Rubean AG
Companies: Rubean AG
Post-purchase outcomes
Benchmark-relative outcomes are available against DAX.
- Excess return = stock return − DAX 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 | 23Established | 100.0% (23/23) | 60.9% (14/23) | +2.2% | +2.8% | -10.3% |
| 20D | 21Established | 100.0% (21/21) | 47.6% (10/21) | -2.2% | -1.3% | -16.9% |
| 60D | 18Developing | 100.0% (18/18) | 38.9% (7/18) | -13.3% | -5.6% | -31.6% |
| 120D | 15Developing | 100.0% (15/15) | 66.7% (10/15) | +19.8% | +14.4% | -31.9% |
Research patterns
- First purchase in 12M
- 0/23
- Large purchase ≥ €100k
- 0/23
- Cluster buying · 15D
- 1/23
- Buying the dip · ≥20% below prior 52W high
- 23/23
- 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.