No actionable bearish signal. This is a routine option-exercise liquidation by two insiders on the same day. The dollar amount is trivial for a $137B company. Ignore for trading purposes.
Price Chart
Executive Summary
A Sony director and CDO sold $9.44M in open-market stock on May 18, 2026, following option exercises at much lower strike prices. The director's $9.04M sale is the largest insider sale at Sony in recent memory and represents roughly 0.007% of the $136.8B market cap — a trivial amount for a mega-cap. The cluster is a textbook option-exercise-then-sell pattern, not a sign of bearish conviction. The transactions are immaterial relative to company size and carry no actionable directional signal.
Key Financial Metrics
Key Facts
- Director Yoshida Kenichiro sold 400,000 shares on May 18 for $9.04M, after exercising 200,000 options at $14.49 and 200,000 at $0 on May 13.
- CDO Kodera Tsuyoshi sold 17,500 shares for $396K on May 18, after exercising 17,500 options at $4.28 and 17,500 at $0 on May 13.
- Total open-market sale value of $9.44M equals ~0.007% of Sony's $136.8B market cap — noise level.
- Both insiders exercised and sold simultaneously, consistent with a planned 10b5-1 or vesting/settlement pattern, not opportunistic selling.
- Previous model reports on Sony (n=1) had a T+20 -12.2% return, but that single prior is from a different filing type and is not predictive here.
Financial Impact
Total insider selling of $9.44M is ~0.007% of market cap — economically negligible.
Risk Factors
- No material risks identified from this insider activity.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-SONY-1779208024748 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 14, 2026 18d ago | 6-K | $24.47 $23.59 | ▼ −3.60% | ▼ −3.70% | $23.82 (−2.66%) |
Sep 3, 2026 29d ago | 6-K | $24.96 $23.90 | ▼ −4.25% | ▼ −3.10% | $23.82 (−4.57%) |
Aug 11, 2026 7w ago | 6-K | $23.61 $23.43 | ▼ −0.76% | ▼ −0.36% | $23.82 (+0.89%) |
Aug 6, 2026 8w ago | Insider Cluster | $23.10 $23.61 | ▲ +2.21% | ▲ +1.00% | $23.82 (+3.12%) |
Aug 5, 2026 8w ago | Insider Cluster | $22.44 $23.54 | ▲ +4.90% | ▲ +4.55% | $23.82 (+6.15%) |
Aug 5, 2026 8w ago | 6-K | $22.44 $23.54 | ▲ +4.90% | ▲ +4.55% | $23.82 (+6.15%) |
Jul 31, 2026 9w ago | 6-K | $23.26 $23.46 | ▲ +0.86% | ▼ −2.65% | $23.82 (+2.41%) |
Jul 17, 2026 11w ago | 6-K | $21.12 $20.69 | ▼ −2.04% | ▼ −1.35% | $23.82 (+12.78%) |
Jul 14, 2026 11w ago | 6-K | $20.80 $21.15 | ▲ +1.68% | ▲ +2.98% | $23.82 (+14.52%) |
Jul 8, 2026 12w ago | Insider Cluster | $21.15 $20.80 | ▼ −1.65% | ▼ −2.52% | $23.82 (+12.62%) |
US Market Status
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