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SC 13G/A ·Filed Oct 8, 2026

ADT

ADT Inc.
NEUTRAL
Impact 3/10
Horizonweeks Processed18d 3h ago SEC0000354204-26-001054
Passive stake amendment
Actionable Insight • Neutral

Monitor for any future conversion to a 13D filing, which would signal a shift from passive to activist intent. The 6.4% stake is material but consistent with Dimensional's typical index-based strategy.

DirectionNeutral
Confidencehigh
Horizonweeks
Latest settled — T+5d
ADT ▲ +5.54% at T+5d
NEUTRAL call +5.54% · α vs SPY +5.82% · entry $6.50 → $6.86
Next anchor: T+20d in 10d
Latest observation: T+11 +3.19% FF3 residual α
Entry = T+0 close
Oct 8, 2026
via day close
T+1d
-1.08%
call -1.08% · α -1.68%
$6.43
settled 17d ago
T+5d
+5.54%
call +5.54% · α +5.82%
$6.86
settled 11d ago
T+20d
Pending
in 10d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

Dimensional Fund Advisors LP filed an amended Schedule 13G disclosing a 6.4% passive stake in ADT Inc. as of September 30, 2026, representing 43,322,385 shares of common stock. The filing is a routine update by a large index/quantitative fund manager with no activist intent, and the stake level is consistent with typical passive holdings.

Key Financial Metrics

Stake
6.4%
Investor
Dimensional Fund Advisors LP

Key Facts

  • Dimensional Fund Advisors LP reported beneficial ownership of 43,322,385 shares of ADT common stock, representing 6.4% of shares outstanding.
  • The filing is an amendment to a prior Schedule 13G, indicating a passive investment strategy under Rule 13d-1(b).
  • Dimensional disclaims beneficial ownership of the securities, which are held by various funds it advises.
  • The filing date is October 8, 2026, with a reporting date of September 30, 2026.

Financial Impact

No financial impact from this filing alone; it is a routine passive stake disclosure.

Risk Factors

  • No material risks identified from this passive filing.

Investment Themes

Services

Documents Analyzed

This report is based on 3 SEC documents filed with EDGAR.

DocumentAccession Number
SC 13G/A Filing (Primary)0000354204-26-001054
Document: 0000354204-26-001054-index.html0000354204-26-001054
Document: 0000354204-26-001054.txt0000354204-26-001054
17 reports for ADT
Performance horizon
50% Hit rate @ T+1 2 of 4 directional calls Went positive at some point 3 of 4 best @ T+20▲ +4.53%May 4, 2026
Filters
Rows
Reports for ADT — sortable, filterable
TypeNow
Oct 23, 2026
3d ago
Institutional Cluster
BULLISH ★ 4/10
$6.90 $6.88▼ −0.29%▼ −1.00%$6.88 (−0.29%)
Oct 20, 2026
6d ago
Press Release
NEUTRAL ★ 1/10
$6.79 $6.80▲ +0.15%▼ −0.38%$6.88 (+1.33%)
Oct 8, 2026
18d ago
SC 13G/A
NEUTRAL ★ 3/10
$6.50 $6.43▼ −1.08%▼ −1.68%$6.88 (+5.85%)
Jul 30, 2026
12w ago
8-K
MIXED ★ 6/10
$7.51 $7.64▲ +1.73%▲ +1.03%$6.88 (−8.39%)
Jul 30, 2026
12w ago
Press Release
MIXED ★ 6/10
$7.51 $7.64▲ +1.73%▲ +1.03%$6.88 (−8.39%)
Jul 21, 2026
13w ago
Institutional Cluster
BEARISH ★ 5/10
$6.89 $6.90▼ −0.15%▼ −0.26%$6.88 (+0.15%)
Jul 16, 2026
14w ago
Press Release
NEUTRAL ★ 1/10
$7.06 $7.00▼ −0.85%▲ +0.14%$6.88 (−2.55%)
May 28, 2026
21w ago
8-K
NEUTRAL ★ 4/10
$6.71 $6.74▲ +0.45%▲ +0.19%$6.88 (+2.53%)
May 18, 2026
23w ago
Insider Cluster
NEUTRAL ★ 2/10
$6.87 $6.98▲ +1.60%▲ +0.56%$6.88 (+0.15%)
May 8, 2026
24w ago
DEFA14A
MIXED ★ 6/10
$6.79 $6.79· 0.00%▲ +0.14%$6.88 (+1.33%)
Showing 10 of 17

US Market Status

Market Closed — Opens Tue (< 1m)

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Report published Oct 8, 2026