This is a routine periodic update by a passive index manager. No change in investment strategy or control intent. Monitor for any future conversion to Schedule 13D, which would signal activist intent.
Price Chart
Executive Summary
Vanguard Portfolio Management LLC filed an amended Schedule 13G disclosing beneficial ownership of 3,528,884 shares of Appian Corp (8.7% of common stock) as of September 30, 2026. This is a routine passive stake update by a large index fund manager; no change in investment intent or material new information.
Key Financial Metrics
Key Facts
- Vanguard Portfolio Management LLC reported 3,528,884 shares (8.7% of common stock) as of September 30, 2026
- Filing is an amendment to Schedule 13G under Rule 13d-1(b), passive investor status
- Vanguard certifies shares were acquired and held in ordinary course, not to influence control
- No single person's interest in the reported securities exceeds 5%
Financial Impact
Stake value approximately $322M based on $3.7B market cap and 8.7% ownership
Risk Factors
- No material risks identified, filing is standard passive ownership disclosure
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) | 0002100121-26-001049 |
| Document: 0002100121-26-001049-index.html | 0002100121-26-001049 |
| Document: 0002100121-26-001049.txt | 0002100121-26-001049 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 30, 2026 2d ago | SC 13G/A | $48.46 | awaiting T+20 | awaiting T+20 | $49.10 (+1.32%) |
Oct 28, 2026 4d ago | Press Release | $51.96 | awaiting T+20 | awaiting T+20 | $49.10 (−5.50%) |
Oct 22, 2026 10d ago | Court Ruling | $52.35 | awaiting T+20 | awaiting T+20 | $49.10 (−6.21%) |
Oct 21, 2026 11d ago | Court Ruling | $51.15 | awaiting T+20 | awaiting T+20 | $49.10 (−4.01%) |
Oct 15, 2026 17d ago | Press Release | $41.17 | awaiting T+20 | awaiting T+20 | $49.10 (+19.26%) |
Oct 7, 2026 25d ago | 144 | $38.66 | awaiting T+20 | awaiting T+20 | $49.10 (+27.00%) |
Aug 15, 2026 11w ago | Institutional Cluster | $34.91 $37.92 | ▲ +8.62% | ▲ +10.60% | $49.10 (+40.65%) |
Aug 6, 2026 12w ago | 8-K | $30.41 $40.82 | ▲ +34.23% | ▲ +33.63% | $49.10 (+61.46%) |
Jun 11, 2026 20w ago | Institutional Cluster | $23.64 $25.24 | ▲ +6.77% | ▲ +4.88% | $49.10 (+107.70%) |
Jun 8, 2026 20w ago | 144 | $24.05 $24.68 | ▲ +2.62% | ▲ +1.17% | $49.10 (+104.16%) |
US Market Status
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