Middlesex Water Company
MSEXNASDAQUSD
- Source valuation snapshot. Not a live recalculation.
- Latest filed annual earnings; price snapshot date unavailable. Not forward P/E.
- Diluted earnings per share from the latest filed annual.
- $58.77 Prior regular-session close from the quote source.
- $57.79–$58.81 Regular-session low and high so far today.
- 115.9K Regular-session shares traded · Nov 11, 4:00 PM ET.
- Feb 18 projected Projected for 2027-02-18 from the company’s own results filings (SEC 8-K Item 2.02). The company has not confirmed the date.
- $48.19–$60.72 52-week trading low and high returned by the quote source.
Understand the Business
Why the Stock Moved
Period-matched expectations history is not yet available. Current metrics are not a substitute for a historical explanation.
The core investment thesis
Own MSEX if Middlesex Water is a small, state‑regulated water/wastewater utility whose durable cash generation comes from essential local monopolies, timely regulatory rate relief and mechanisms that transfer large capital costs (distribution improvements, PFAS treatment) to customers.
MSEX price history
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Investment thesis
What must happen next
State regulatory approvals and established riders (base increases, RESIC, DSIC) causally allow Middlesex to grow revenue and pass through capital/operating costs to customers, keeping retail rates supportive of steady top‑line growth.StrengtheningMateriality: High
MD&A: NJBPU approved $14.5 million of Middlesex/Pinelands base rate increases effective Feb 23, 2026 and foundational RESIC and DSIC filings. If regulators keep allowing cost recovery, revenue growth and cash generation remain predictable; if they stop, growth and cash convertibility would weaken.
Watch: A regulator (NJBPU or DEPSC) disallows material portions of PFAS treatment or DSIC/RESIC recovery or denies future base rate increases.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
MD&A: NJBPU approved $14.5 million of Middlesex/Pinelands base rate increases effective Feb 23, 2026 and foundational RESIC and DSIC filings.
Open source ↗Federal PFAS regulation will force meaningful treatment capital spending, but regulatory cost‑recovery mechanisms and MDL settlement proceeds will largely shift those costs to customers rather than permanently depressing operating cash flow.HoldingMateriality: High
MD&A: USEPA finalized PFAS MCLs with monitoring and treatment timelines (initial monitoring by April 2027. If treatment costs are recoverable, capex increases rate base and sustains returns; if regulators or payors refuse recovery, capex becomes an earnings and cash‑flow drag.
Watch: NJBPU/DEPSC refuses to allow recovery of PFAS treatment capital or O&M, or requires multi‑year amortization that delays recovery.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
MD&A: USEPA finalized PFAS MCLs with monitoring and treatment timelines (initial monitoring by April 2027.
Open source ↗Because rates are set to provide a return on rate base and recover prudently incurred costs, Middlesex’s operating income and margins should remain broadly stable even as it executes required capital programs.StrengtheningMateriality: Medium
Operating income rose steadily: $33,211,000 (FY2021) → $39,223,000 (FY2023) → $53,210,000 (FY2024) → $54,376,000 (FY2025). Stable operating income/margins preserve dividend capacity and credit metrics; if margins compress, the company’s cash/coverage and valuation are at risk.
Watch: Large, non‑recoverable O&M increases (e.g., severe weather, contamination response) or higher financing costs not offset in rates.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
Operating income rose steadily: $33,211,000 (FY2021) → $39,223,000 (FY2023) → $53,210,000 (FY2024) → $54,376,000 (FY2025).
Open source ↗Small, regulator‑approved acquisitions (like Ocean View and Pinewood Acres) increase assets and rate base, translating into accretive revenue and allowed returns once regulators approve rate recognition.StrengtheningMateriality: Medium
MD&A: Tidewater completed acquisitions in 2025 (Town of Ocean View assets and Pinewood Acres, LLC) as authorized by the DEPSC. If acquisitions continue to be approved as rate base additions, they speed growth; if regulators deny rate base treatment, acquisitions dilute returns and cash conversion.
Watch: Regulators decline to include acquisition costs in rate base or impose long lagged treatment.
Supporting sources
Source notes are factual paraphrases; read the original disclosures below.
MD&A: Tidewater completed acquisitions in 2025 (Town of Ocean View assets and Pinewood Acres, LLC) as authorized by the DEPSC.
Open source ↗
Full investment case & evidence
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Original research
State regulatory approvals and established riders (base increases, RESIC, DSIC) causally allow Middlesex to grow revenue and pass through capital/operating costs to customers, keeping retail rates supportive of steady top‑line growth. If regulators keep allowing cost recovery, revenue growth and cash generation remain predictable; if they stop, growth and cash convertibility would weaken.
Federal PFAS regulation will force meaningful treatment capital spending, but regulatory cost‑recovery mechanisms and MDL settlement proceeds will largely shift those costs to customers rather than permanently depressing operating cash flow. If treatment costs are recoverable, capex increases rate base and sustains returns; if regulators or payors refuse recovery, capex becomes an earnings and cash‑flow drag.
Because rates are set to provide a return on rate base and recover prudently incurred costs, Middlesex’s operating income and margins should remain broadly stable even as it executes required capital programs. Stable operating income/margins preserve dividend capacity and credit metrics; if margins compress, the company’s cash/coverage and valuation are at risk.
Small, regulator‑approved acquisitions (like Ocean View and Pinewood Acres) increase assets and rate base, translating into accretive revenue and allowed returns once regulators approve rate recognition. If acquisitions continue to be approved as rate base additions, they speed growth; if regulators deny rate base treatment, acquisitions dilute returns and cash conversion.
All standing thesis claims
Original report summary
Middlesex Water is a small, state‑regulated water/wastewater utility whose durable cash generation comes from essential local monopolies, timely regulatory rate relief and mechanisms that transfer large capital costs (distribution improvements, PFAS treatment) to customers.
Bull case and bear case
Bull case and bear case for Middlesex Water Co
Where the evidence on Middlesex Water Co stands: Holding on the latest evidence (Nov 12, 2026). Of its 4 thesis points, 3 strengthening and 1 holding.
Bull case: what the evidence supports
State regulatory approvals and established riders (base increases, RESIC, DSIC) causally allow Middlesex to grow revenue and pass through capital/operating costs to customers, keeping retail rates supportive of steady top‑line growth.
Federal PFAS regulation will force meaningful treatment capital spending, but regulatory cost‑recovery mechanisms and MDL settlement proceeds will largely shift those costs to customers rather than permanently depressing operating cash flow.
Because rates are set to provide a return on rate base and recover prudently incurred costs, Middlesex’s operating income and margins should remain broadly stable even as it executes required capital programs.
Small, regulator‑approved acquisitions (like Ocean View and Pinewood Acres) increase assets and rate base, translating into accretive revenue and allowed returns once regulators approve rate recognition.
Bear case: what would count against it
A regulator (NJBPU or DEPSC) disallows material portions of PFAS treatment or DSIC/RESIC recovery or denies future base rate increases.
NJBPU/DEPSC refuses to allow recovery of PFAS treatment capital or O&M, or requires multi‑year amortization that delays recovery.
Large, non‑recoverable O&M increases (e.g., severe weather, contamination response) or higher financing costs not offset in rates.
Thesis-Break Engine
Thesis-break watch · Middlesex Water Co
OptimistFi is watching Middlesex Water Co. No break-condition checks are on record yet — they accumulate as new filings are checked.
MARKET + FINANCIAL SNAPSHOT
The numbers behind the thesis
What Changed
- MixedReported results of operations (earnings release).
Middlesex Water Co filed an SEC 8-K on 2026-10-29: Reported results of operations (earnings release). It is a dated development that tests the current thesis.
- MixedReported results of operations (earnings release).
Middlesex Water Co filed an SEC 8-K on 2026-07-30: Reported results of operations (earnings release). It is a dated development that tests the current thesis.
- MixedReported results of operations (earnings release).
Middlesex Water Co filed an SEC 8-K on 2026-04-30: Reported results of operations (earnings release). It is a dated development that tests the current thesis.
Risks / falsifiers
What could break the thesis
- A regulator (NJBPU or DEPSC) disallows material portions of PFAS treatment or DSIC/RESIC recovery or denies future base rate increases.
- NJBPU/DEPSC refuses to allow recovery of PFAS treatment capital or O&M, or requires multi‑year amortization that delays recovery.
- Large, non‑recoverable O&M increases (e.g., severe weather, contamination response) or higher financing costs not offset in rates.
- Regulators decline to include acquisition costs in rate base or impose long lagged treatment.
MSEX news
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Financial statements
MSEX income statement
Annual filed results · USD · Oldest to newest. Margins are calculated from the reported figures.
MSEX: quick answers
- When does Middlesex Water Co (MSEX) report earnings next?
- Middlesex Water Co's next results are projected for February 18, 2027, from the dates of its own results filings with the SEC. The company has not confirmed the date. It last reported on October 29, 2026. Earnings calendar
- What is MSEX's short interest?
- As of October 30, 2026, 670,651 MSEX shares were sold short, 3.51% of its shares outstanding, down 8.3% from the count before. At the stock's average daily volume that is 5.4 days to cover. FINRA publishes the count twice a month. MSEX short interest history
