Monitor for further reductions by Dimensional or other index-oriented holders; a continued drift below 4.5% could signal broader institutional rotation. No activist catalyst expected given the passive 13G filing.
Price Chart
Executive Summary
Dimensional Fund Advisors LP filed an amended Schedule 13G disclosing a 4.8% passive stake in UniFirst Corp as of September 30, 2026, down from a prior 5.0%+ position. The reduction below the 5% threshold signals a modest de-risking by a quantitative index-oriented manager, though the filing remains passive with no activist intent.
Key Financial Metrics
Key Facts
- Dimensional Fund Advisors LP reported beneficial ownership of 703,965 shares of UniFirst Corp common stock as of September 30, 2026.
- The stake represents 4.8% of shares outstanding, down from a prior position above 5%.
- Dimensional disclaims beneficial ownership and certifies the securities were acquired in the ordinary course of business, not for control purposes.
- The filing is an amendment to a prior Schedule 13G, indicating a reduction in position size below the 5% reporting threshold.
Financial Impact
Dimensional reduced its stake from above 5% to 4.8%, a decrease of approximately 0.2%+ of shares outstanding. No dollar value disclosed.
Risk Factors
- Continued selling by Dimensional or other large passive holders could pressure the stock.
- The reduction below 5% removes the requirement for future 13G amendments, reducing transparency on Dimensional's ongoing position changes.
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| SC 13G/A Filing (Primary) | 0000354204-26-001045 |
| Document: 0000354204-26-001045-index.html | 0000354204-26-001045 |
| Document: 0000354204-26-001045.txt | 0000354204-26-001045 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 21, 2026 6d ago | 8-K | $274.00 | awaiting T+20 | — | $249.84 (+8.82%) |
Oct 13, 2026 14d ago | Press Release | $258.08 | awaiting T+20 | — | $249.84 (−3.19%) |
Oct 8, 2026 18d ago | SC 13G/A | $259.60 | awaiting T+20 | — | $249.84 (−3.76%) |
Aug 28, 2026 8w ago | 8-K | $281.88 $259.44 | ▼ −7.96% | ▼ −8.22% | $249.84 (−11.37%) |
Jul 1, 2026 16w ago | 8-K | $266.54 $301.19 | ▲ +13.00% | ▲ +15.19% | $249.84 (−6.27%) |
Jul 1, 2026 16w ago | Press Release | $266.54 $301.19 | ▲ +13.00% | ▲ +15.19% | $249.84 (−6.27%) |
Jun 12, 2026 19w ago | 8-K | $264.83 $271.78 | ▲ +2.62% | ▲ +0.84% | $249.84 (−5.66%) |
Jun 12, 2026 19w ago | Press Release | $264.83 $271.78 | ▲ +2.62% | ▲ +0.84% | $249.84 (−5.66%) |
Jun 11, 2026 19w ago | Institutional Cluster | $275.65 $270.87 | ▼ −1.73% | ▼ −3.62% | $249.84 (−9.36%) |
May 11, 2026 24w ago | DEFM14A | $252.35 $270.48 | ▲ +7.18% | ▲ +7.49% | $249.84 (−0.99%) |
US Market Status
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