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US INSIDER PROFILE · NON-SCORING RESEARCH
STEWART MARTA R
Director
Identity: SEC owner CIK matched through an unambiguous cached owner-name crosswalk · Reporting-owner CIK: 0001272064
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 3
- Purchases · 24M
- 8
- Average purchase
- $31.5K
- Median purchase
- $33.9K
- Gross purchase value
- $251.8K
Companies: SIMON PROPERTY GROUP INC /DE/ | SIMON PROPERTY GROUP INC.
8 SEC accession(s) · 0 joint-owner event(s). Values are reported Form 4 transaction values in USD.
Qualifying purchase disclosures
| Published | Company | Ticker | Role | Reported value | SEC source |
|---|---|---|---|---|---|
| 2026-10-01 | SIMON PROPERTY GROUP INC. | SPG | Director | $40.4K | Open filing |
| 2026-07-01 | SIMON PROPERTY GROUP INC. | SPG | Director | $40.6K | Open filing |
| 2026-01-05 | SIMON PROPERTY GROUP INC. | SPG | Director | $35.7K | Open filing |
| 2025-10-01 | SIMON PROPERTY GROUP INC /DE/ | SPG | Director | $34.6K | Open filing |
| 2025-08-15 | SIMON PROPERTY GROUP INC /DE/ | SPG | Director | $7.2K | Open filing |
| 2025-07-01 | SIMON PROPERTY GROUP INC /DE/ | SPG | Director | $33.1K | Open filing |
| 2025-04-02 | SIMON PROPERTY GROUP INC /DE/ | SPG | Director | $30.3K | Open filing |
| 2025-01-02 | SIMON PROPERTY GROUP INC /DE/ | SPG | Director | $29.8K | Open filing |
Post-purchase outcomes
Excess return = stock return − S&P 500 ETF (SPY adjusted close) return. 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 | 8Developing | 100.0% (8/8) | 12.5% (1/8) | -1.9% | -2.2% | -7.3% |
| 20D | 7Developing | 100.0% (7/7) | 42.9% (3/7) | -2.0% | -1.1% | -9.4% |
| 60D | 7Developing | 100.0% (7/7) | 57.1% (4/7) | +0.6% | -1.5% | -14.2% |
| 120D | 6Developing | 100.0% (6/6) | 66.7% (4/6) | +2.9% | +2.7% | -10.9% |
Research patterns
- First purchase in 12M
- 0/7
- Large purchase ≥ $100k
- 0/8
- Cluster buying · 15D
- 7/8
- Buying the dip
- 0/8
Routine / opportunistic: Not classifiable. These labels never affect the score or ranking.
Small samples remain visible but are not scored. This research enrichment never affects US-v1.1.