Monitor for any future conversion to a Schedule 13D if Vanguard increases its stake or changes its investment intent, but as a passive index fund manager, this is a routine update with no immediate trading implications.
Price Chart
Executive Summary
Vanguard Portfolio Management LLC filed an amended Schedule 13G disclosing a 4.99% passive stake in Western Alliance Bancorporation as of September 30, 2026, representing 5,448,381 shares. The filing is an amendment to a prior 13G filed by Vanguard Capital Management LLC in July 2026, and the stake remains below the 5% threshold, indicating no material change in the passive investment posture.
Key Financial Metrics
Key Facts
- Vanguard Portfolio Management LLC reported beneficial ownership of 5,448,381 shares of Western Alliance Bancorporation common stock.
- The stake represents 4.99% of shares outstanding as of September 30, 2026.
- The filing is an amendment to a prior Schedule 13G (filed July 31, 2026 by Vanguard Capital Management LLC).
- The investor certifies the shares were acquired and are held in the ordinary course of business, not for changing or influencing control.
- The filing is made under Rule 13d-1(b), confirming passive investor status.
Financial Impact
Stake valued at approximately $414M based on $8.3B market cap and 4.99% ownership.
Risk Factors
- No material risks identified from this passive stake amendment.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| SC 13G/A Filing (Primary) | 0002100121-26-001128 |
| Document: 0002100121-26-001128-index.html | 0002100121-26-001128 |
| Document: 0002100121-26-001128.txt | 0002100121-26-001128 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 30, 2026 2d ago | 8-K | $77.85 | awaiting T+5 | awaiting T+5 | $76.29 (−2.00%) |
Oct 30, 2026 2d ago | SC 13G/A | $76.00 | awaiting T+5 | awaiting T+5 | $76.29 (+0.39%) |
Oct 28, 2026 4d ago | Institutional Cluster | $75.96 | awaiting T+5 | awaiting T+5 | $76.29 (+0.43%) |
Oct 19, 2026 13d ago | 8-K | $75.30 $76.40 | ▲ +1.46% | ▲ +1.38% | $76.29 (+1.31%) |
Jun 11, 2026 20w ago | Institutional Cluster | $82.32 $78.43 | ▼ −4.73% | ▼ −5.16% | $76.29 (−7.33%) |
Jun 10, 2026 20w ago | Insider Cluster | $82.32 $78.43 | ▼ −4.73% | ▼ −5.16% | $76.29 (−7.33%) |
May 12, 2026 24w ago | 8-K | $23.85 $23.81 | ▼ −0.17% | ▼ −0.25% | $76.29 (+219.87%) |
Apr 30, 2026 26w ago | 8-K | $23.73 $23.78 | ▲ +0.21% | ▼ −1.52% | $76.29 (+221.49%) |
Apr 22, 2026 27w ago | DEFA14A | $23.40 $23.68 | ▲ +1.20% | ▼ −0.28% | $76.29 (+226.03%) |
Apr 21, 2026 27w ago | 8-K | $23.38 $23.68 | ▲ +1.28% | ▲ +1.23% | $76.29 (+226.30%) |
US Market Status
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