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SC 13G/A ·Filed Oct 8, 2026

WTTR

Select Water Solutions, Inc.
NEUTRAL
Impact 3/10
Horizonweeks Processed18d 5h ago SEC0000354204-26-001034
Passive stake amendment
Actionable Insight • Neutral

Monitor for any further reductions by Dimensional or conversion to a 13D filing if the stake crosses below 5% — a passive filer exiting below 5% could signal reduced institutional conviction.

DirectionNeutral
Confidencemedium
Horizonweeks
Latest settled — T+5d
WTTR ▼ -7.14% at T+5d
NEUTRAL call -7.14% · α vs SPY -6.87% · entry $19.60 → $18.20
Next anchor: T+20d in 9d
Latest observation: T+11 -2.10% FF3 residual α
Entry = T+0 close
Oct 8, 2026
via day close
T+1d
+0.82%
call +0.82% · α +0.22%
$19.76
settled 18d ago
T+5d
-7.14%
call -7.14% · α -6.87%
$18.20
settled 12d ago
T+20d
Pending
in 9d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

Dimensional Fund Advisors LP filed an amended Schedule 13G disclosing a 4.9% passive stake in Select Water Solutions, Inc., down from a prior filing. The filing confirms the stake remains just below the 5% threshold, with no activist intent.

Key Financial Metrics

Stake
4.9%
Investor
Dimensional Fund Advisors LP

Key Facts

  • Dimensional Fund Advisors LP reported beneficial ownership of 6,331,185 shares of Select Water Solutions common stock as of September 30, 2026.
  • The stake represents 4.9% of shares outstanding.
  • The filing is an amendment to a prior Schedule 13G, indicating a decrease from a previously higher position.
  • Dimensional disclaims beneficial ownership and certifies passive intent under Rule 13d-1(b).

Financial Impact

Stake decreased to 4.9% from a prior higher level — no dollar value disclosed.

ownership_percentage

Risk Factors

  • Further reduction below 5% threshold could be viewed as a negative signal by the market.
  • No material change in institutional sentiment if other large holders also trim.
  • No activist or operational catalyst is indicated by this passive filing.

Investment Themes

Traditional Energy

Documents Analyzed

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

DocumentAccession Number
SC 13G/A Filing (Primary)0000354204-26-001034
Document: 0000354204-26-001034-index.html0000354204-26-001034
Document: 0000354204-26-001034.txt0000354204-26-001034
13 reports for WTTR
Performance horizon
50% Hit rate @ T+5 2 of 4 directional calls Went positive at some point 2 of 4 best @ T+5▲ +4.67%May 21, 2026
Filters
Rows
Reports for WTTR — sortable, filterable
TypeNow
Oct 21, 2026
5d ago
8-K
NEUTRAL ★ 5/10
$17.54awaiting T+5—$18.14 (+3.42%)
Oct 15, 2026
11d ago
8-K
MIXED ★ 5/10
$18.58 $18.14▼ −2.37%▼ −1.94%$18.14 (−2.37%)
Oct 13, 2026
13d ago
8-K
BULLISH ★ 7/10
$19.35 $18.76▼ −3.05%▼ −1.90%$18.14 (−6.25%)
Oct 8, 2026
18d ago
SC 13G/A
NEUTRAL ★ 3/10
$19.60 $18.20▼ −7.14%▼ −6.87%$18.14 (−7.45%)
Sep 24, 2026
4w ago
8-K
BULLISH ★ 7/10
$19.84 $19.95▲ +0.55%▲ +0.78%$18.14 (−8.57%)
Jul 1, 2026
16w ago
144
BEARISH ★ 6/10
$17.99 $19.17▼ −6.56%▼ −5.63%$18.14 (−0.83%)
Jun 11, 2026
19w ago
Institutional Cluster
MIXED ★ 4/10
$18.47 $18.04▼ −2.33%▼ −2.76%$18.14 (−1.79%)
Jun 1, 2026
21w ago
8-K
NEUTRAL ★ 2/10
$18.86 $18.32▼ −2.86%▲ +0.10%$18.14 (−3.82%)
May 21, 2026
22w ago
Insider Cluster
BEARISH ★ 5/10
$19.28 $18.38▲ +4.67%▲ +6.33%$18.14 (+5.91%)
May 14, 2026
23w ago
144
NEUTRAL ★ 2/10
$18.96 $19.28▲ +1.69%▲ +0.72%$18.14 (−4.32%)
Showing 10 of 13

US Market Status

Market Closed — Opens Wed (13h 19m)

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Report published Oct 8, 2026