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SC 13G/A ·Filed Oct 6, 2026

SWIM

Latham Group, Inc.
NEUTRAL
Impact 4/10
Horizonweeks Processed21d 8h ago SEC0000902219-26-000318
Passive stake amendment
Actionable Insight • Neutral

Monitor for any future conversion to a 13D filing, which would signal activist intent. The incremental increase is modest and consistent with passive portfolio rebalancing.

DirectionNeutral
Confidencemedium
Horizonweeks
Latest settled — T+5d
SWIM ▼ -4.69% at T+5d
NEUTRAL call -4.69% · α vs SPY -4.56% · entry $6.39 → $6.09
Next anchor: T+20d in 7d
Latest observation: T+13 +4.55% FF3 residual α
Entry = T+0 close
Oct 6, 2026
via day close
T+1d
-0.31%
call -0.31% · α -0.07%
$6.37
settled 20d ago
T+5d
-4.69%
call -4.69% · α -4.56%
$6.09
settled 14d ago
T+20d
Pending
in 7d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

Wellington Management Group LLP filed an amended Schedule 13G disclosing a 10.2% passive stake in Latham Group, Inc. as of September 30, 2026, up from 9.7% in the prior filing. The increase reflects growing institutional conviction, though the filing remains passive with no activist intent.

Key Financial Metrics

Stake
10.2%
Investor
Wellington Management Group LLP

Key Facts

  • Wellington Management Group LLP reported beneficial ownership of 12,030,278 shares of Latham Group common stock as of September 30, 2026.
  • The stake represents 10.2% of shares outstanding, up from 9.7% in the May 2026 filing.
  • The filing is a passive Schedule 13G/A under Rule 13d-1(b); no activist intent is indicated.
  • Wellington Management Company LLP, the investment adviser, directly holds 11,373,680 shares (9.7% of class).

Financial Impact

Wellington increased its stake by approximately 0.5 percentage points (from 9.7% to 10.2%) since the prior filing. No dollar value disclosed.

ownership percentage

Risk Factors

  • A large institutional holder at 10.2% could influence governance if it shifts to active engagement.
  • No specific catalyst or guidance change accompanies this filing.

Investment Themes

Materials & Mining

Documents Analyzed

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

DocumentAccession Number
SC 13G/A Filing (Primary)0000902219-26-000318
Document: 0000902219-26-000318-index.html0000902219-26-000318
Document: 0000902219-26-000318.txt0000902219-26-000318
8 reports for SWIM
Performance horizon

Track record builds as more directional reports settle.

Filters
Rows
Reports for SWIM — sortable, filterable
TypeNow
Oct 6, 2026
21d ago
SC 13G/A
NEUTRAL ★ 4/10
$6.39awaiting T+60—$6.84 (+7.04%)
Aug 21, 2026
9w ago
8-K
NEUTRAL ★ 5/10
$7.03awaiting T+60—$6.84 (−2.70%)
Aug 19, 2026
9w ago
3
NEUTRAL ★ 2/10
$7.19awaiting T+60—$6.84 (−4.87%)
Jun 11, 2026
19w ago
Institutional Cluster
MIXED ★ 4/10
$5.69 $7.10▲ +24.78%▲ +20.38%$6.84 (+20.21%)
May 21, 2026
22w ago
Insider Cluster
NEUTRAL ★ 3/10
$5.16 $7.13▲ +38.18%▲ +33.88%$6.84 (+32.56%)
Mar 20, 2026
31w ago
DEFA14A
NEUTRAL ★ 2/10
$5.55 $5.45▼ −1.80%▼ −16.22%$6.84 (+23.24%)
Mar 3, 2026
33w ago
Press Release
BULLISH ★ 8/10
$7.20 $5.43▼ −24.58%▼ −34.67%$6.84 (−5.00%)
Mar 3, 2026
33w ago
Press Release
BULLISH ★ 7/10
$7.20 $5.43▼ −24.58%▼ −34.67%$6.84 (−5.00%)
Showing 8 of 8

US Market Status

Market Closed — Opens Wed (17h 27m)

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Report published Oct 6, 2026